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Pictured are the Zoeller Sump Pump Types and Models we are comparing.
 
 

The Zoeller Pump Model Differences

Understanding Zoellers many sump pump product series and models can be confusing especially since the features vary. This review explains key features to -sump pump longevity.

This review compares the three Zoeller product series: basic, professional and premium as well as the individual models within each product series. Discover the Pros and Cons.

This guide helps you to be an educated shopper and select best sump pump for your water pumping needs.
 
Because there are so many models, we rank the Zoeller Models by their Product Series Basic (Good), Professional (Better) and Premium (Best) Models series.
- The Basic Good Models possess the basic features but lack the better and best features other models have.
- The Basic Good Models are 1052, 1073, 1075, 1096, 1099 and 49-Water-Riddr..
- The Professional Better Models have more features than the Basic Good Models but lack the strategic premium features the Premium Best Models possess.
- The Professional Better Models are M53, M55, M57, M59, M98, and M137.
- The Premium Best Models do indeed possess premium features that give the models more durability and additional features for a better sump pump ownership experience.
- The Premium Best Models are M63 and M95.
Pictured are Zoeller submersible sump pumps graded as good better and best by features review.
 

Since Zoeller sump pumps are so very popular, this review also includes comparisons of Zoeller battery backup sump pumps, water powered sump pumps and sewage pumps.

 
 

The Common Features Of Zoeller Sump Pump Models

- All Zoeller Sump Pumps are subjected to two tests, pressure test and performance test, before leaving the factory so they will work when installed. Most brands only test by batch or model type.
- Zoeller primary submersible sump pumps rely on a vortex impeller to handle small solids so have no bottom screen to clean.
- Rust is retarded with expoxy coated cast iron housing and stainless steel screws, pump handle and float protection guard to last several decadss.
- All models feature automatic thermal overload reset protection to protect the motor from burnout.
- Water leakage is prevented with watertight, neoprene square ring between motor and pump housing and another neoprene gasket between the pump housing and the switch case.
- The Upper and lower sleeve bearings for the motor are sealed hermetically and run in bath of oil to ensure motor durability.
- Regardless of good, better, best ranking, all Zoeller sump pumps are good and do the job of removing water from the pit to prevent basement flooding.
 
 
 
 

The Zoeller Basic Series Models Review By Comparison

- The Basic Models include 1052, 1073, 1075, 1096, 1099 and 49-Water-Riddr.
- The Basic Models provide more horse power options are provided: one-fourth, one-third, one-half and three-fourth HP.
- One-fourth (0.25) HP model 49-Water Riddr, one-third (0.33) HP models 1052, 1073, and one-half (0.50) HP models 1075, 1096, and three-fourth (0.75) HP model 1099 are included.
- The Zoeller Basic Models are lacking the Professional and Premium features that make a sump pump most dependable and durable.
 

Basic Models 1073-001 and 1075-001 Review

Pros
- The price is at least $50 less than the Professional model sump pumps.
 
Cons
- Their magnetic draw vertical float switch can becoom contaminated by water containing calcium carbonate. As a result, the magnetic draw becomes contaminated and fails to work. Many years ago we installed sump pumps with magnetic draw vertical float switches and found they fail in two or three years because we live in an area that contains a lot of calcium carbonate. The model 1099 also uses a magnetic draw vertical float switch; however it has an additional float switch for protection when the first float switch fails. The dual float switch increases the model 1099 warranty to three years.
- The warranty is only two years whereas the Professional Series has a three year warranty and the Premium Series has a five year warranty.
- The Switch head is thermoplastic. Thermoplastic traps heat and the switch area can become hot during continuous pumping. The Profession and Premium Series have a cast iron switch head.
- Use of thermoplastic switch head causes the pump to weigh less at 12.4 pounds which means the pump will easily move during heavy continuous pumping. The Professional and Premium pumps weigh over 21 pounds each.
- The motor and pump body housing are one and the same. The Professional and Premium Series models have two layers of cast iron which keeps air from the motor so it keeps cooler during heavy pumping.
Pictured is Zoeller Submersible sump pump Basic Models 1073-001 and 1075-001. They have a magnetic draw flaot switch which is subject to mineal deposits which cause switch failure.
 

Basic Models 1052 and 1096 Review

Pros
- Their 2-pole snap action float switch which is not affected by calcium carbonate. Thus these pump models are more dependable than the Models 1073 and 1075 but not as dependable as the Premium M63 and M95.
- The three year warranty is the same as the popular Professional Series M53, M57. M98.
 
Cons
- The motor and pump body housing are one and the same for these models. The better and best ranked models have two layers of cast iron which keeps air from the motor which results is keeping the motor cooler during heavy pumping.
- The price is almost identical to the long time plumbers favorite M53; The M53 has two cast iron housings: one for the motor and one for the pump for better heat dissipation.
Pictured is Zoeller Submersible sump pump Basic Models 1052-001 and 1095-001. They have a magnetic draw float switch which is subject to mineal deposits which cause switch failure.
 
 

The Zoeller Professional Series Models Review By Comparison

- The Professional Models are M53, M55, M57, M59, M98 and M137.
- The Professional Series includes one-third (0.33) HP models M53, M55, M57, and M59 and one-half (0.50) HP models M98 and M137.
- The Zoeller Professional Models are lacking the premium features of the Premium Models; however the Professional Models are a step above the Basic Models.
 
Pros
- Two cast iron housings: a cast iron motor housing and a cast iron pump body housing for better heat dissipation, are used for all models.
- A three year warranty is offered for all models.
- The 2-pole snap action vertical float switch, not impacted by water mineral contaminates, especially calcium carbonate, is more dependable and used for the Professional Series.
- The additional cast iron used increases the pump weight so the pumps are more stationary during heavy continuous pumping.
- A float switch replacement is readily available online and easy to install. This prevents the need to discard the durable pump body.
- The cost is more budget friendly than the Premium Series.
Pictured is Zoeller Submersible sump pump Professional Models M53 M55 M57 M59 M98 and M137. They have a snap action float switch which whyich liast longer than a magnetic draw switch.
 
Cons
Compared to the Premium Series, the Professional Series does not offer the following.
- An enhanced 2-pole snap action vertical float switch with the additional bar to alleviate frictions when the circuit closes to run the pump extends the life of the switch.
- A Viton Switch Boot provides another layer of protection against moisture entering the switch cap when the gasket eventually wears out.
- A LED lighted plug signals the electrical current is working and ready when the pump needs to run.
- A five year warranty is offered.
 
 

The Zoeller Premium Series Models Review By Comparison

The Premium Model sump pumps are top of the line.
- The Premium Models are M63 and M95..
- The Premium Series includes one-third (0.33) HP models M63 one-half (0.50) HP model M95.
- Cast iron is used for the motor housing, pump housing, impeller, switch cap and pump base.
- The Premium Series sump pumps have a five year warranty.
 
Pros
- Cast iron is used for the sump pumps housing, base, switch case and impeller. This extends the durability of the pump to last several decades. Cast iron adds weight so the pump does not move during heavy continuous pumping and dissipates heat to keep the motor cool.
- A five year warranty is offered because of the switch enhancements and additional protection from moisture.
- An enhanced 2-pole snap action vertical float switch with the additional bar decreases the impact of friction and extends the life of the switch when the circuit closes to run the pump.
- A Viton Switch Boot surrounds the pump switch located in the switch cap. This additional layer of protection from moisture entering the switch cap when the gasket eventually wears out keeps the electrical current working properly.
- A LED lighted plug is an owner friendly feature which signals electrical current is available when the pump needs to run.
Pictured is Zoeller Submersible sump pump Premium Models M63 and M95. They have added features to extend their life to at elast twise as long as the Professional series sump pumpa.
 
Cons
- The price of the Premium series pumps is much higher; however the M63 and M95 offer much more peace of mind and the pump switch will last much longer before needing replacement. The pump body will last decades.
 

Distinction Between Zoeller USA Made And Zoeller Taiwan Made Sump Pumps

Note: The above mentioned models are manufactured by the Zoeller USA factory with headquarters in Louisville, Kentucky. Do be aware that in 2004 Zoeller formed a Zoeller Taiwan plant fully owned by Zoeller and supported by Zoeller employees. This plant is the Flint Walling Sump Pump Company Zoeller purchased to help Asian countries with their sump pump needs. These pumps are made by Zoeller Taiwan and tested there. Some of these models are shipped to the USA. The model numbers of the submersible sump pumps shipped to the USA do not have a prefix of M or N.

The Zoeller Taiwan made models include 1052 (1/3 HP), 1073-001 (73-001) (1/3 HP), 1075-001 (75-001) (1/2 HP), 1096-0001 (1/2 HP) and 1099-0001 (3/4 HP).

The Zoeller Taiwan made submersible sump pump specifications are slightly different. The switch case is thermoplastic. There is not a double layer of cast iron for the motor and pump body housing to dissipate the motor heat as well. The models 1073 and 1075 have a magnetic float and a two year warranty. Zoeller USA made sump pumps have a 3 year warranty; the M63 and M95 have a 5 year warranty and they have a double layer of cast iron for better heat dissipation.

The specifications for the Zoeller Taiwan factory made sump pumps can be viewed here.

We prefer the Zoeller USA factory made products which this review covers below.

 
 

Zoeller Sump Pump Model Comparison

 

THE ZOELLER PRIMARY SUBMERSIBLE SUMP PUMP MODELS SIMILARITIES

The Zoeller Primary Submersible Sump Pumps (M53, M57, M63, M95, M98, M137 And Their Related Models) have the following similarities.

- Cast iron motor housing to dissipate motor heat
- Cast iron pump housing and switch case to dissipate motor heat and add weight for minimal movement in the basin during heavy continuous pumping.
- A non-clogging impeller without the need of a screen to stop debris from getting clogged in the impeller
- Stainless steel screws, pump handle and float protection guard to remain rust proof over years of use
- Puncture proof float because it is solid buoyant, polypropylene
- Two-pole mechanical snap action float switch
- Hermetically-sealed with Upper and lower sleeve bearings running in bath of oil to aid in motor durability
- Watertight, neoprene square ring between motor and pump housing and another neoprene gasket between the pump housing and the switch case to prevent water leakage
- Automatic reset thermal overload to protect the motor from burnout
- Effluent because they pass small spherical solids through their vortex impeller,
- Double tested. Pressure tested for leaks and performance tested to ensure they meet guaranteed pumping performance charts GPH (gallons pumped per hour)
Zoeller Sump Pump Inside and Outside At PumpsSelection.com
 

Their differences are a little more subtle model by model. These differences are identified by the following specifications: horse power, GPH, power, cord length, float ON and OFF height, material type for the impeller and pump base, pump dimensions and weight, and warranty.

 

THE ZOELLER PRIMARY SUBMERSIBLE SUMP PUMP MODEL DIFFERENCES

Click MODEL DIFFERENCES X vs Y to see Specific Model Comparison. Scroll down the page to see all.
 
 

M53 vs M57

M53 vs M57 Differences are:
- The M57 impeller will last longer because it is cast iron not engineered plastic.
- The M57 will be more stationary in the basin because its base is cast iron not engineered plastic.
- The M57 weighs more at 27.1 pounds vs the M53 weighs 21 pounds.
- The M57 costs around $30 more which is not much considering the fact that it has more cast iron.
Zoeller M57 Sump Pump At PumpsSelection.com
 
M53 vs M57 Similarities are:
- Both are one-third horse power (HP).
- Their performance flow rate (PFR) is 34 GPM at ten feet verticalheight and 2,040 GPH.
- The float ON and OFF height is preset in the factory. ON is 7-1/4 inches. OFF is 3 inches.
- Both have cast iron motor housing and pump housing with a 2-pole vertical float switch.
- Their width is 10-3/32" (26.2 cm) and their height is 10-1/16" (25.6 cm).
- Both the M53 and M57 have a 3 year warranty.
- Their performance flow rate (PFR) is 34 GPM at ten feet verticalheight and 2,040 GPH.
- The float ON and OFF height is preset in the factory. ON is 7-1/4 inches. OFF is 3 inches.
- Their width is 10-3/32" (26.2 cm) and their height is 10-1/16" (25.6 cm).
- Both have cast iron motor housing and pump housing with a 2-pole vertical float switch.
Zoeller M53 Sump Pump At Pumps Selection
 
M53 and M57 Con is:
- The float switch is mechanical and over time will fail (probably after 5 years). But the good news is that float switches are easy to purchase and install. The easiest installation is buying a switch case so only a few screws need to be loosened. See the Switch replacement part now.
 
 
 

M53 vs M63

M53 vs M63 Differences are:
- The M63 impeller will last longer because it is cast iron not engineered plastic.
- The M63 will be more stationary in the basin because its base is cast iron not engineered plastic.
- The M63 has a 5 year warranty which is 2 more years than the M53 which is 3 years.
- The M63 power cord has an LED lighted plug which is green when house current is available to run the pump when the float switch turns the pump on.
- An additional bar is added in the M63 switch case to reduce the friction caused when the float reaches its ON height which closes the electrical circuit, turns the switch on and runs the pump motor.
- An additional Viton boot is added to provide additional protection against moisture entering the switch area and causing an electrical short.
- The M63 weighs 7 pounds more than M53. M63 weighs 28 pounds and M53 weighs 21 pounds.
- The power cord for the M63 ten feet which is one foot longer than the cord for the M53. .
- The M63 costs between $80 and $100 because of the switch upgrades and additional cast iron parts.
Zoeller M63 Sump Pump At Pumps Selection
 
M53 and M63 Similarities are:
- Both are one-third horse power (HP).
- Their performance flow rate (PFR) is 34 GPM at ten feet verticalheight and 2,040 GPH.
- The float ON and OFF height is preset in the factory. ON is 7-1/4 inches. OFF is 3 inches.
- Their width is 10-3/32" (26.2 cm) and their height is 10-1/16" (25.6 cm).
- Both have cast iron motor housing and pump housing with a 2-pole vertical float switch.
Zoeller M53 Sump Pump At Pumps Selection
 
M53 Con is:
- The float switch is mechanical without the enhancement and over time will fail sooner than the M63 float switch. But the good news is that float switches are easy to purchase and install for the M53. The easiest installation is buying a switch case so only a few screws need to be loosened. See the Switch replacement part now.
 
 
 
 

M53 vs M98

M53 vs M98 Differences are:
- The M98 has greater horse power: 1/2 HP for the M98 and 1/3 HP for the M53.
- The float ON and OFF height is preset in the factory. ON is 9-1/2 inches for the M98 though the OFF float height is the same at 3 inches.
- Their width is very close within 1/8 of an inch difference (10-3/32" 26.2 cm for the M53), but the M98 is almost 2 inches taller at 12 inches vs 10-1/8 inches.
- The M98 power cord is much longer at 15 feet vs 9 feet for the M53.
- The pumping performance of the M98 is much greater at a 10 foot vertical height. It is 61 GPM for M98 vs 34 GPM for M53 and 3660 GPH for the M98 and 2040 GPH for the M53.
- An additional Viton boot is added to provide additional protection against moisture entering the switch area and causing an electrical short.
- M98 weighs 18 pounds more than M53. M98 weighs 39 pounds and M53 weighs 21 pounds.
- The M98 costs between $120 and $140 more than the M53 because of its additional horse power and physical size which requires more cast iron and other parts.
Zoeller M98 Sump Pump At Pumps Selection
 

M53 and M98 Similarities are:

- Both have cast iron motor, housing, pump housing and switch case with an engineered plastic base.
- Their warranty is the same at 3 years.
- Both have cast iron motor housing and pump housing with a 2-pole vertical float switch.
- The float switch is mechanical and over time will fail. But the good news is that float switches are easy to purchase and install for the M53. The easiest installation is buying a switch case so only a few screws need to be loosened. See the Switch replacement part now.
Zoeller M53 Sump Pump At Pumps Selection
 
 
 

M57 vs M98

M57 vs M98 Differences are:
- The M98 has greater horse power: 1/2 HP for the M98 and 1/3 HP for the M57.
- Since M98 has a greater horse power it also has a greater pump performance which is 61 GPM at a 10 foot vertical height The M57 can only pump 34 GPM. During the span of an hour the number of gallons pumped is significant. 3,660 GPH for the M98 and only 2040 for the M57.
- The float ON and OFF height is preset in the factory. ON is 9-1/2 inches for the M98 though the OFF float height is the same at 3 inches.
- M98 is almost the same width with only 1/8 inch difference (10-3/32" 26.2 cm for the M53), but the M98 is almost 2 inches taller at 12 inches vs 10-1/8 inches for M57.
- The M57 power cord is much shorter at 9 feet vs 15 feet for the M98.
- The M57 impeller is cast iron but the impeller for the M98 is thermoplastic.
- M98 weighs 12 more pounds than the M53. The M98 weighs 39 pounds.
- The M98 costs around $100 more than M57.
Zoeller M98 Sump Pump At Pumps Selection
 
M57 and M98 Similarities are:
- Both have cast iron motor, housing, pump housing and a thermoplastic base.
- Their warranty is the same at 3 years.
- Both have cast iron motor housing and pump housing with a 2-pole vertical float switch.
- Both use the same float switch which is easy to find and install. The easiest installation is buying a switch case so only a few screws need to be loosened. See the Switch replacement part now.
Zoeller M57 Sump Pump At PumpsSelection.com
 
 
 

M57 vs M63

M57 vs M63 Differences are:
- The M63 has a 5 year warranty which is 2 more years than the M53 which is 3 years.
- The M63 will be more stationary in the basin because its base is cast iron not engineered plastic.
- The M63 has a 5 year warranty which is 2 more years than the M53 which is 3 years.
- The M63 power cord has an LED lighted plug which is green when house current is available to run the pump when the float switch turns the pump on.
- An additional bar is added in the M63 switch case to reduce the friction caused when the float reaches its ON height which closes the electrical circuit, turns the switch on and runs the pump motor.
- The M63 upgrade included an additional Viton boot which provides additional protection against moisture so the switch will not have an electrical short.
- The M63 weighs less than one pound more than M57. M63 weighs 28 pounds and M55 weight 27.1 pounds.
- The power cord for the M63 ten feet which is one foot longer than the cord for the M57. .
- The cost difference between the M63 and M57 is around $30. So it would make sense to purchase the M63 because it has a 2 year longer warranty.
Zoeller M63 Sump Pump At Pumps Selection
 
M57 and M63 Similarities are:
- Both have cast iron motor housing, pump housing, switch case, base and impeller.
- M63 and M57 both have one-third horse power (HP)
- Their pump performance rate (PFR) is 34 GPM at ten feet vertical height and 2,040 GPH.
- The float ON and OFF height is preset in the factory. ON is 7-1/4 inches. OFF is 3 inches.
- Both have cast iron motor housing and pump housing with a 2-pole vertical float switch.
- Their width is 10-3/32" (26.2 cm) and their height is 10-1/16" (25.6 cm).
Zoeller M57 Sump Pump At PumpsSelection.com
 
M57 Con is:
- The float switch for M57 has not been upgraded therefore it will fail sooner than the M63 float switch. But the good news is that float switches are easy to purchase and install for the M57. The easiest installation is buying a switch case so only a few screws need to be loosened. See the Switch replacement part now.
 
 
 
 

M95 vs M98

M95 vs M98 Differences are:
- The M95 impeller will last longer because it is cast iron not engineered plastic.
- Both the M95 and M98 will remain very stationary in the basin because of their weight.
- The M95 has a 5 year warranty which is 2 more years than the M98 which is 3 years.
- The M63 power cord has an LED lighted plug which is green when house current is available to run the pump when the float switch turns the pump on.
- An additional bar is added in the M95 switch case to reduce the friction caused when the float reaches its ON height which closes the electrical circuit, turns the switch on and runs the pump motor.
- An additional Viton boot is added to M95 provide additional protection against moisture entering the switch area and causing an electrical short.
- The M95 and M98 are very close in weight however the M98 is one pound more than the M95.
- The M95 uses more electricity than the M98. M95rates at 10.7 Amps. M98 rates at 9.4 Amps.
- The M95 is bigger with dimensions of 12-1/4 inches wide and 11 inches tall while M98 is 10-1/8 inches by 12 inches tall.
- The M95 costs around $125 more than the M98.
Zoeller M95 Sump Pump At Pumps Selection
 
M95 and M98 Similarities are:
- Both are one-half horse power (HP).
- Their performance flow rate (PFR) is 61 GPM at ten feet vertical height and 3,660 GPH.
- The float ON and OFF height is preset in the factory. ON is 9-1/2 inches. OFF is 2-1/2 inches.
- Both have cast iron motor housing and pump housing with a 2-pole vertical float switch.
- The power cord for the M95 and M98 is 15 feet.
Zoeller M98 Sump Pump At Pumps Selection
 
M98 Con is:
- The M98 float switch is mechanical without the enhancement and over time will fail sooner than the M95 float switch. But the good news is that float switches are easy to purchase and install for the M53. The easiest installation is buying a switch case so only a few screws need to be loosened. See the Switch replacement part now.
 
 
 

M57 vs M98 vs M137

M57 vs M98 vs M137 differences are the M57 and M137 impeller are cast iron and the M98 impeller is engineered plastic. M57 is one-third horse-power; M98 and M137 are one-half horse power. Performance flow rate for M57 at a 10 foot vertical height is 43 GPM; M98 is 72 GPM and M137 is 79 GPM.
 
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THE BATTERY BACKUP PUMP REVIEW BY COMPARISON

Zoeller has three battery-backup sump pump systems. All three models will fit in an eighteen inch diameter pit with a primary pump. Two of the models are submersible - Models 507-0005 and 508-0005. The 508 also has a Wi-Fi enabled backup pump model number 508-0014.The Model is a pedestal style backup and the motor sits above the pit and must not be submersed in water.
 
There are several differences between the 507-0005 vs 508-0005 battery backup water pumps. The 507-0005 is installed in line with the discharge pipe while 508-0005 has legs and can be installed in line or free standing in the pit bottom; the flow rate performance is higher for the 508-0005 with a flow rate of 60 gallons per minute or 1800 gallons per hour at 10 feet dynamic height. The 507-0005 flow rate is 15 gallons per minute or 900 gallons per hour at a 10 foot head height. The 508-0005 has a redundant high water switch. If one switch fails the other one will activate.
 
Model 507-0005 frequently serves as a backup for primary M53. The pumping capacity for the 507 at ten foot lift is 900 gallons per hour. If the primary runs at capacity during heavy rainstorms, installing the backup 508-005 will be more appropriate.
 
Model 508-0005 moves 1800 GPH at ten foot lift. The Aquanot 585 moves up to 2100 GPH at ten foot lift. The horse power equivalency of the 507-0005 is one-fourth horse power. For the backup 508-0005 and 585, the horse power equivalency is one-third horse power.
 
Zoeller battery backup water systems are well-built and dependable. The 507 and 508 have a vortex impeller which prevents clogging.
 
The battery case for both the 507-005 and 508-005 accommodates battery sizes Group 27, Group 29, and Group 31 which offers the homeowner great flexibility for battery purchases. Both the wet cell and AGM batteries can be used. The 585 accommodates battery group sizes 27 and 31.
 
The backup systems 507 and 508 offer the standard alarm notification systems - an LCD screen showing the battery voltage, and LED light indicating the battery is charging, is low and the float is activated. An alarm sounds when high water occurs, there is battery cable reverse polarity and the battery charge is low. The set of dry contacts can be connected to home security system or an auto dialer. The 585 also has an alarm system.
 
The battery charger for these backups is stronger than most brands at 10 amps. The battery charger for the 585 is 28 amps which requires less time to recharge a depleted battery.
 
Of the three Zoeller battery backup sump pumps, the 508-0014 has the best specifications: 2040 GPH at a 10 foot vertical height, a dual float switch which provides redundancy in case one of the float switches fails, a 3 year warranty, a 10 amp battery recharger, a self-testing controller to give peace of mine to the home owner that the backup pump is operational, and Wi-Fi connectivity. This is a good battery backup sump pump system manufactured by Zoeller, a dependable sump pump company.
Pictured is the Zoeller Battery Backup Sump Pump System 508-0014 with WiFI connectivity and high pump performance.
 
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THE ZOELLER WATER POWERED PUMP REVIEW BY COMPARISON

540 Flex vs 503-0005 Water Powered Pump Review by Comparison

Zoeller's latest water powered sump pump model is no longer big, clumsy looking and in the way when it comes time to remove the primary pump from the basin. Zoeller's latest water powered pump model, the 540 Flex, is small and can be installed in the ceiling rafters so it is out of sight and not in the way.

The 503-0005 and the 540 Flex water powered pumps do have some commonalities: one gallon of city water removes two gallons of basin water; sixty pounds of city water pressure enables them to pump most effectively; when the municipal water pressure is sixty psi, one thousand one-hundred forty gallons of water can be pumped per hour from the basin.

The Zoeller water powered pumps, 503-0005 and the 540 Flex, do have some differences. The 540 Flex can be installed in the ceiling rafter out of sign and out of the way, however the 503-0005 must installed directly above the top of the basin and the primary pump; the 540 Flex uses a diaphragm float that is much smaller and durable. The 503-0005 relies on a large vertical float to trigger the activation of the ejector which begins the flow of city water through the pump's ejector. The pressure of the city water begins the Venturi cycle of sucking unwanted water from the basin.

Pictured is thje Zoeller 640 Flex Water Powered Sump Pump.
 

Homeowners who prefer not to rely on battery backup power because their backup system runs for long periods of time, find the 540 Flex and the Homeguard Max to be a great solution. No electricity or battery is required. The 540 Flex and the 503-0005 rely solely on the availability of city water and its dependable pressure.

Of Zoellers two water powered sump pumps, the 540 Flex is the best choice. It can pump 1,140 GPH at 60 PSI and it can be installed at ceiling joist height out of sight.

 
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THE ZOELLER COMBINATION SUMP PUMPS REVIEW BY COMPARISON

These Zoeller combination sump pumps are made by the Zoeller USA factory.

Combination pump systems are very popular since the alignment of two pumps is already done by the manufacturer. The system is already preassembled with a primary and battery backup pump and the homeowner only needs to attach the preassembled discharge pipe to their existing discharge pipe system. These preassembled systems eliminate the frustration of measuring and configuring the existing discharge pipe system to install two pumps separately - the primary and a backup. The combination system encourages homeowners to install their own systems and save money. Zoellers combination systems are known as the PROPak Series.
Pictured is the Zoeller Combination Sump Pump Pro-Pak 508-0006 with M53 and Backup pump 508-0005
 

Knowing how to select a combination system is important. The most important facts the homeowner must know before selecting a combination primary and backup is how wide the existing pit is and how much water is pumped during a heavy rainstorm. Measuring the diameter of the pit is easy. Take a yardstick and lay it across the open pit, write down the number of inches. Measuring the amount of water entering the pit during a rainstorm is more challenging. See the steps for determining the size of pump needed.

 

PROPAK MODEL WITH PRIMARY AND BACKUP

The Zoeller Combination PROPak Model 507-0008 includes the primary M53 and the backup Sentry 507-0005.
The Zoeller Combination PROPak Model 507-0011 includes the primary M98 and the backup Sentry 507-0005.
The Zoeller Combination PROPak Model 508-0006 includes the primary M53 and the backup Aquanot 508-0005.
The Zoeller Combination PROPak Model 508-0007 includes the primary M98 and the backup Aquanot 508-0005.
 

PROPAK MODEL WITH PUMPING PERFORMANCE

For the Zoeller Combination PROPak Model 507-0008, at a 10 foot vertical height, the backup 507-0005 moves 30 gallons per minute and the M53 moves 34 GPM.
For the Zoeller Combination PROPak Model 507-0011 , at a 10 foot vertical height, the backup 507-0005 moves 30 gallons per minute and the M98 moves 61 GPM.
The Zoeller Combination PROPak Model 508-0006 at a 10 foot vertical height, the primary M53 moves 34 gallons per minute and the more powerful backup Aquanot 508-0005 moves 30 gallons per minute.
The Zoeller Combination PROPak Model 508-0007 at a 10 foot vertical height, the primary M98 moves 61 gallons per minute and the more powerful backup Aquanot 508-0005 moves 30 gallons per minute.
 

PROPAK MODEL DIMENSIONS

The Zoeller Combination PROPak Model 507-0008 is around 18 3/4 inches high and 13 1/2 inches wide. The backup pump can be installed inline (above the primary pump rather than on the basin bottom).
The Zoeller Combination PROPak Model 507-0011 is around 20 inches high and 13 1/2 inches wide. The backup pump can be installed inline (above the primary pump rather than on the basin bottom).
The Zoeller Combination PROPak Model 508-0006 is around 20 inches high and 13 1/2 inches wide. The backup pump can be installed inline (above the primary pump rather than on the basin bottom).
The Zoeller Combination PROPak Model 508-0007 is around 20 inches high and 13 1/2 inches wide. The backup pump can be installed inline (above the primary pump rather than on the basin bottom).
 
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The Zoeller Sewage Pumps Review By Comparison

M268 vs M264 Sewage Pump Review by Comparison

M264 vs M268 difference is M268 has cast iron base while M264 base is engineered plastic. M264 is 4/10 horse power; M268 is one-half horse power. Performance flow rate for M264 is 90 GPM; M268 is 128 GPM. Shut off height for M264 is 18 feet; M268 is 21.5 feet. M264 Amps is 4.7 - 9.4 while M268 is 1.5 - 10.4 Amps. Solids handling is 2 inches for both. The discharge piping size for M264 is 2 inches. For M268 the discharge size can be 2 or 3 inches. As for weight, M264 weighs 35 pounds and M267 weighs 47 pounds. They both have a 2-pole mechanical vertical float switch, a non-clogging vortex impeller, can handle 2 inch solids, have an engineered plastic impeller with metal insert, and are not affected by the material in the basin.
Pictured is the Zoeller 267 Seage Pump.
 

M267 vs M268 Sewage Pump Review by Comparison

M267 vs M268 are identical except the M268 weighs a little over fifty pounds and the M267 weighs forty-seven and one-half pounds. The M267 and M268 have cast iron base, switch case, and housing. M267 as well as M268 has a 2-pole mechanical vertical float switch, have a vortex impeller made of engineered plastic with a metal insert, have a ten foot power cord, pump 128 gallons per minute, have a shut off height of 21.5 feet, have a discharge size of 2 or 3 inches, the float ON point is twelve inches and the OFF point is four inches.
The N267 and N268 come as a non-automatic sewage pump. The non-automatic (manual) pump has two advantages: 1) when the float switch fails the pump does not have to be removed from the basin; 2) the ON OFF point can be customized by raising or lowering the float. Since the float switch used for a non-automatic pump is attached to the discharge piping system, only the float needs to be removed from the basin. If you wish to do your own maintenance, this is a great idea.
 

E270 and M280 Series

The E270 and M280 Series Sewage pumps come with a lot of power - one horse power. The M270 A Series has a maximum head shut off height of twenty-nine feet and the M284 has a shut-off height of thirty-five feet; so both work well where much discharge pipe height and distance are involved. The M280 Series is completely cast iron including the impeller. The E270 series has an engineered plastic impeller. The flow rate for the E270 series is 132 gallons per minute whereas the M280 series has a flow rate of 179 GPM. Though these pump series a very similar it is important to note the cord length for the M280 series is ten feet whereas the cord length for the E270 series is twenty feet.
 
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Zoeller Pump Detailed Features Review By Comparison

   (Click SPECIFICATIONS COMPARISON (Hover) to see Specific Features Comparison; Scroll down the page to see all.)
 
 
 

HORSE POWER AND PERFORMANCE (GPH) REVIEW BY COMPARISON

Primary sump pumps run on electricity (AC - Alternating Current) therefore, their power capability is measured in horse-power. Horse power along with motor efficiency determine the performance of a sump pump (gallons of water pumped in one minute - GPM).

Horse-power ranges from one-fourth to one-half (1/4 or 0.25 to 1 HP for sewage). When comparing the performance with other manufacturers, generally Zoeller 1/4 HP pumps can remove as much water from the pit in a specified amount of time as a 1/3 HP of a competitors pump. Likewise, a 1/2 HP can generally pump as much as a 3/4 HP competitors.

One-fourth Horsepower

One-fourth HP is for those homeowners who have an average amount of water during a heavy rainfall or that have a steady flow of water from the drain tile but not a heavy flow. One-third horsepower is for those who have a heavier flow from the drain tile, but not so much that the sump pump cannot keep up with the flow. One-half horsepower is for those who have a heavy gushing of water from the drain tile.

The 1/4 HP Models include 49-0005 Water Riddr. The performance of this model is 32 GPM (gallons per minute) or 1920 GPH (gallons per hours at a 5 foot lift and 25 GPM or 1500 GPH (gallons per hour) at a 10 foot lift height.

One-third Horsepower

The 1/3 HP Models include M53, M55, N55 (Non-Automatic), M57 , BN57 (Non-Automatic), M59, N59 (Non-Automatic), M63.

The pumping performance is 43 GPM or 3580 GPH at a 5 foot lift and 34 GPM or 2040 GPH (gallons per hour) at a 10 foot lift height.

One-half Horsepower

The 1/2 HP Models include M76, M95, M98, M137 , N137 (Non-Automatic), M139, and N139 (Non-Automatic).

The pumping performance for the M76 is 50 GPM or 3000 GPH at a 5 foot lift and 40 GPM or 2400 GPH (gallons per hour) at a 10 ft. height.

The pumping performance of M95 is 80 GPM or 4800 GPH at a 5 foot lift and 66 GPM or 3660 GPH (gallons per hour) at a 10 foot height.

The pumping performance of M98 is 72 GPM or 4320 GPH at a 5 foot lift and 61 GPM or 3660 GPH (gallons per hour) at a 10 foot height.

The pumping performance of the M137, N137, M139, N139 is 93 GPM or 5580 GPH at a 5 foot lift and 79 GPM or 4740 GPH (gallons per hour) at a 10 foot height.

 
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CONSTRUCTION MATERIAL HOUSING, BASE, IMPELLER REVIEW BY COMPARISON

Stainless Steel

All Zoeller Pump screws, guard and handle are stainless steel. Stainless steel will not rust and has strength.
 
Thermoplastic
Construction material makes a difference in durability. Thermoplastic can get hot, warp, and crack when it is used under strenuous pumping conditions.
 
The only Zoeller pumps with engineered thermoplastic are the M72 and M76. Their pump base, impeller, and shaft are also thermoplastic.
 
Glass-filled polypropylene
Glass-filled polypropylene is stronger than engineered thermoplastic. This is why it is used for the pump base, housing, shaft and impeller for M53. The M98 and M137 Impeller are also made from glass-filled polypropylene.
 
Cast Iron
Cast iron is very durable. It dissipates heat and will not warp or crack. Cast iron is epoxy coated to resist corrosion.
 
The M53 motor-housing, pump-housing case, cap and bearings are made of cast iron. The pump base is engineered thermoplastic. The impeller is made of engineered glass filled plastic with a metal insert.
 
The M57 motor-housing, pump-housing, pump base, impeller, cap, shaft, switch case and bearings are made of cast iron.
 
The M63 motor-housing, pump-housing, pump base, impeller, cap, shaft, switch case, shaft and bearings are made of cast iron.
 
The M95 and M98 motor-housing, pump-housing, cap, base and bearings are made of cast iron. The impeller is engineered plastic.
 
The M137 and N137 motor-housing, pump-housing, base, bearings, cap and impeller are made of cast-iron.
 
Bronze
Bronze is even more durable and stronger than cast-iron. It is a great construction material for sump pumps; however it is much more expensive.
 
The M55 switch case, motor-housing, pump-housing and bearings are made of bronze. The pump base is engineered thermoplastic and the impeller and shaft are engineered, glass-filled plastic with metal insert.
 
The M59 switch case, motor-housing, pump-housing, impeller, shaft and bearings are made of bronze.
 
The M139 switch case, motor-housing, pump-housing, impeller, shaft and bearings are made of bronze.
 
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FLOAT SWITCH REVIEW BY COMPARISON

Tethered

Advantages of tethered float
The homeowner has some flexibility in determining the ON and OFF point of the motor by lessening some of the slack of the tether.
 
Disadvantages of tethered float
The tethered float requires the widest pit diameter to operate. The tether and float can tangle and get hung up most easily.
 

How tethered float switch works

The operation of the tethered float is simple. As the water rises in the pit, the ball at the end of the tether begins to rise and swing out. When the ball is high enough the switch will trigger the motor to run. As the water lowers in the pit so does the ball and tether.
Pictured is the tether float switch of the Zoeller 49. The float rises and lowers as the water level in the sump pump changes.
 
The 49-0005, the Water Ridd'r III, has a tethered float switch and requires 12 in. diameter-pit.
 
Two-pole float operated mechanical switch
Advantages of two-pole vertical
The two-pole vertical float requires less pit diameter, has a protective guard that protrudes from the switch box to prevent the float from getting caught, the float is held securely in place, the float is made of solid polypropylene so puncturing will not cause it to fail.
Pictured is the 2 pole vertical float switch of the zoeller submersible sump pumps.
 
Disadvantages of two-pole vertical
The ON and OFF point of the pump cannot be altered. It is important to remember that the switches are expected to last three to five years depending upon the frequency of pumping. It is best to have a replacement switch on hand. It is easy and cheap to replace the switch.
 
How two-poled vertical float switch works

The operation of the two-pole float-switch is simple. As the water rises in the pit, the float rises ever so slightly. When the float is high enough the switch will trigger the pump to run. As the water lowers in the pit so does the float.

The M53, M55, M57, M59, M63, M76, M95, M98, M137, M139 Have a two-poled vertical float-switch.

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SOLIDS HANDLING REVIEW BY COMPARISON

Vortex Impeller - Non clogging
Advantages of vortex impeller
The vortex impeller is the best design for preventing the impeller from clogging with debris. All Zoeller pumps can handle debris; however the size of solids handled varies by model.
 
The vortex impeller does not require periodic cleaning like manufacturers who use bottom suction with a bottom screen or those who use top suction. All sump basins have some kind of debris whether it be small pea gravel or something larger; the issue is how pumps are designed to handle it.
 
Models By Solids Handling Size
3/8 in. solids-handling
Models 49-0005, M76 can handle up to 3/8 in. solids.
 
1/2 in. solids-handling
Models M53, M55, N55, M57, BN57, M59, N59, M63, M95 and M98 can handle up to 1/2 in. solids.
 
5/8 in. solids-handling
Models 137, N137, M139, and N139 can handle up to 5/8 in. solids.
 
2 in. solids-handling
Models M264 and M267 can handle up to 2 inch solids.
 
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SUMP ON POINT AND OFF POINT REVIEW BY COMPARISON

Preset ON and OFF Points
The ON and OFF point for the Zoeller sump pump using a two-pole mechanical float-switch is preset at the factory; thus the homeowner cannot make a change.
 
Homeowners installing a pump with a tethered float-switch can slightly modify the ON position.
 
Homeowners installing a pump with an independent float-switch can determine the ON height of the pump since the float-switch is not attached to the sump pump but to the discharge pipe.
 
The greater the distance between the ON and OFF point, the less frequently the pump will run and less short cycling will occur.
 
Models By Switch ON OFF Height
ON 7 3/8 inches OFF 3 5/8 inches
This means only 3 3/8 inches of water is removed during one pumping cycle if the pump is not running continuously. In an eighteen in. diameter-pit this would only be around 4-6 gallons of pit water.
 
ON 7 1/4 inches OFF 3 inches
Models M53, M55, M57, M59, and M63 are preset with the ON position of 7 1/4 inches and the OFF position of 3 inches.
 
This means every time 4 gallons of water entered the pit the pump would run because in an eighteen inch diameter-pit one in. equals around one gallon of pit water.
 
ON 8 1/2 inches OFF 3 3/4 inches
Model M76 is preset with the ON position of 8 1/2 inches and the OFF position of 3 3/4 inches.
 
This means when the water in the sump pit rises 4 1/4 inches the float will trigger the motor to run. Each time the pump cycles around 4-6 gallons of pit water will be removed.
 
ON 9 1/2 inches OFF 3 inches
Model M98 is preset with the ON position of 9 1/2 inches and the OFF position of 3 inches. At this preset position around six or seven gallons of water can enter the basin before the float will trigger the motor to run.
 
Each time the M98 pumps in an eighteen inch wide basin, approximately 7 - 9 gallons of water will be pumped from the pit.
 
ON 10 inches OFF 2 3/4 inches
Model M137 and M139 are preset with the ON position of 10 inches and the OFF position of 2 3/4 inches. This preset position means around 8 - 10 gallons of sump water can be removed when the pump is for one cycle in an eighteen in. diameter-pit.
 
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POWER CORD LENGTH REVIEW BY COMPARISON

The length of the power cord becomes important when the wall outlet is not close to where the sump pump is installed.
 
It is important to note that each pump should have its own wall outlet. Plugging in more than one pump in the same electrical outlet (circuit) may cause the circuit breaker to trip because of over load. In addition, a sump pump should not be plugged into an extension cord.
 
Models By Power Cord Length
Nine Foot Power Cord
Models 49-0005, M53, M55, M57, M59, and M76 have a nine ft power cord.
 
Ten Foot Power Cord
Model M63 has a ten foot power cord with an LED lighted plug end which can be easily seen.
 
Twelve Foot Power Cord
Models M137 and M138 have a ten foot power cord.
 
Fifteen Foot Power Cord
Models M95, M98, N137, and N139 have a fifteen foot power cord. Model M95 has a power cord with an LED lighted plug end which can be easily seen.
 
Sixteen Foot Power Cord
Non-automatic models - N55, BN57, and N59 have a sixteen foot power cord.
 
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AMPS (AMPERAGE) REVIEW BY COMPARISON

Amperage determines how much electricity is used. Amperage is converted to kilowatt hours to determine how much it costs to run a Zoeller Sump Pump.

Models By AMPs Used
Model 49-0005 uses 3.8 amps.
Model M76 uses 5 amps.
Model M98 uses 9.4 amps.
Models M53, M55, BN55, M57, N57, M59, N59. and M63 use 9.7 amps.
Models M137, N137, M139, and N139 use 10.7 amps.
 
 
 

SHUT OFF HEAD TOTAL OF HEIGHT AND LENGTH AT WHICH PUMP WILL NO LONGER PUMP

The shut off head height for the M53, M55, M57, and M59 is nineteen feet three inches. The M63 shut off head height is nineteen feet six inches. The shut off head height for M98, M137 and M139 is twenty three feet and for the M95 it is twenty-six feet. For M75, M76 is shut-off-height is twenty-five feet. For M49, M72, and M73 the shut-off-height is eighteen feet.

 
 

THE DIMENSIONS OF THE MODELS IS DIFFERENT

The width of the Model 50 Series and the Model 90 Series is the same at ten and 3/32 inches wide. The difference is in the height. The M50 Series Models are ten and 1/8 inches high. Whereas the M95 is twelve and 1/8 inches high and M98 is twelve inches high.

The specific dimensions for the submersible primary sump pumps is:
- Major-Width: 8-3/32" (21 cm); Major-Height 10-1/2" (26.7 cm) for M49
- Major-Width: 8-3/32" (21 cm); Major-Height 11" (27.9 cm) for M73
- Major-Width: 8-3/32" (21 cm); Major-Height 12-3/8" (31.4 cm) for M75
- Major-Width: 9-1/16" (230 cm); Major-Height 12-5/8" (321 mmm) for M76
- Major-Width 9-1/16" (230 mm); Major-Height 11-13/16" (300 mm) for M72
- Major-Width: 10-3/32" (26.2 cm); Major-Height (10-1/16" (25.6 cm) for M53, M55, M57, M59, M63
- Major-Width 10-1/8" (31 cm); Major-Height 12-1/8" (30 cm) for M95, M98
- Major-Width 12-1/4" (31.1 cm); Major-Height 12-3/4" (32.4 cm) for M137, M139
 
 

WARRANTY REVIEW BY COMPARISON

All Zoeller models have a three year warranty except for M72 and M76 which have a one year warranty because the housing is made of engineered plastic, and the M63 and M95 which have a five year warranty. Zoeller is very confident of the durability of their pumps and rightfully so because plumbers recommend them above other brands because these pumps are built to function for many years. Some consumers have had them run for as long as 25 years. If the float-switch is replaced every three to five years depending upon frequency of use, they will continue to pump for years.

 
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Zoeller Pump Reviews

 

Check These Zoeller Sump Pump Reviews.

 

Zoeller Sump Pump Consumer Reviews

Brad from Chicago says the Zoeller pumps are built like a tank. They are made of heavy quality cast iron. The housing is built to last. The cast iron will not rust because it is epoxy coated. The float is solid and cannot fail if it gets punctured. The parts for the pump are all made and assembled in the USA. The sales sheet indicates each pump is tested before it leaves the factory. The float switch is tested for over one million runs. He likes Zoeller pump products.
 
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DISCOVER WHY PLUMBERS RECOMMEND ZOELLER

Watching plumbers explain the differences between Zoeller and other pump manufacturers helps the homeowner to understand what features (specifications) are important and why Zoeller is rated as the number one sump pump.

Discover the difference found inside the pump and why plumbers recommend these pump products.

The Zoeller sump pump can now be purchased by home owners online. This is great news for the homeowner. Buying online saves money and time.

 
 

What Makes Zoeller Unique?

- All Zoeller M and N Model submersible sump pumps and their parts are made in the USA.
- They are 100% factory tested underwater to guarantee dependability when you plug it in the first time. Those who work in the factory take pride in their work.
- Zoeller Pumps are referred to as 'The Plumbers Choice'.
- Performance is higher than other manufacturers with same horse-power
- Zoeller is the oldest independently owned U.S. pump manufacturer (1939).
- Full line of pump types are available: primary submersible, battery backup, water powered, combination (primary + backup) and pedestal, laundry, sewage.
- Replacement parts are available including float switches.
- Accessories are available including check valves, basins, and alarms.
 
Zoeller Pumps TOC
 

Why Review And Compare Zoeller Sump Pump Models?

Zoeller is progressive and upgrades its pumps. The popular M53 and M98 are upgraded to M63 and M95. They have a better switch with a five year warranty. The battery backup Aquanot Fit 508 has built-in Wi-Fi for Z Control connectivity. The 540 Flex is a complete design change for the Water Powered Backup pump. What a beauty!
The upgraded Premiuim M63 Zoeller Sump Pump At Pumps Selection
 
- Zoeller still makes its pumps in the USA and double tests each pump before it leaves the factory so it will work when installed.
Zoeller pumps are still the plumbers favorite. The pumps are made with quality cast iron including the motor housing. Cast iron dissipates heat well during continuous pumping and adds weight so the pump remains stationary during heavy continuous pumping.
The Old Zoeller Water Powered Sump Pump Vs the New 540 Flex At Pumps Selection
 

The following information provides a comparison and an in-depth review of the Zoeller primary, backup and sewage pumps. There are many features gen to all Zoeller pumps.

 
 

The Zoeller Sump Pump Is Different Inside

Zoeller provides a lot of training regarding the 'inside' of their sump pumps and what makes them different. This makes Zoeller pumps unique and highly rated by home owners and plumbers.

How Is A Zoeller Pump Different Inside? Let's Take A Look.

- Pump housing is made of cast iron not plastic which overheats. Cast iron dissipates heat better than aluminum, zinc, carbon steel and stainless steel as well.
- Vortex impeller is used instead of an inlet screen. Vortex impeller allows small solids to flow through so there is no screen to clog.
- Motor is not canned. Zoeller makes their own motors which are larger and directly touching the outside housing. Plus they use cast iron for motor housing so there are actually two layers of cats iron: the motor housing and the pump housing. Many manufacturers purchase canned motors, which use aluminum for motor housing, from a third party and place them inside their pump housing. A canned motor inside an outside housing does not dissipate heat as well and causes additional wear on the motor.
- Twenty percent motor capacity is unused during continuous operation which results in longer motor life. Most manufacturer motor run to full capacity during continuous operation.
- Four pole motor is used and therefore does not rotate as fast like many manufacturers who use the two pole motor.
- The vertical float is not hollow therefore it will not fill with water if punctured. Many manufacturers have hollow floats which sink if punctured.
- Clearance is found between where the impeller spins and where the water is sucked in. This prevents clogging.
A look inside a Zoeller Sump Pump At Pumps Selection
 
Keep the above features in mind as you learn about model differences. It's the differences that are highlighted model by model.
 
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How to Install Zoeller Sump Pump

Click INSTALLATION to see Installation Help; Scroll down the page to see all.
 
Get Zoeller Sump Pump Installation Help
 
Zoeller Pumps are easy to install. Check the Owners Manual, follow the steps below and watch the video.
 

Steps to Install Zoeller Sump Pump

Step 1. Screw adapter into pump discharge port

STEP 1

Find the threaded 1 1/2 inch male adapter and screw it into the pump discharge port. Tighten it up.

Step 2. Prime and Glue PVC piece. Place piece in pump discharge port.

STEP 2

Cut a piece of 1 1/2 inch PVC discharge pipe long enough to go above the float-switch guard when screwed into the male adapter. Prime and glue the cut piece in place.

Step 3. Attach the No-Hub at the top of the PVC piece.

STEP 3

Install a no-hub coupling on the top of the piece glued in place in step two.

 
Step 4. Set the pump into the pit.

STEP 4

Set the pump into the pit. Make sure it sits squarely on the bottom with no obstructions on the side.

Step 5. Make sure a check valve is installed.

STEP 5

Make sure you have a check valve installed in the discharge pipe to be attached to the no-hub. It is wise to install a new check valve every time a new pump is installed. In fact, a quiet check valve is a great solution to prevent water knocking.

Step 6. Connect the pump discharge piping to existing discharge piping system.

STEP 6

Take your existing discharge pipe coming down into the pit and attach it into the top end of the no-hub coupling. Tighten the coupling. If the pump passes the test, you are done. If you have some leaks, check your fittings. Make sure they are really tight.

 
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Watch How A Plumber Installs a Zoeller Sump Pump
 
 
 
 

HOW TO DETERMINE SUMP PUMP SIZE NEEDED

Here are tips for determining what size sump pump is needed for your water pumping needs. If you are new to sizing your sump pump, check out more details on the 'How To Size Sump Pump' page.
 
Take a yardstick. When the pump has just stopped running during a heavy rain, stick the yardstick in the pit. Use your watch to time how many inches the water rises in 60 seconds. If too much water enters the pit in 60 seconds, try timing it for 30 seconds and multiply the number of inches the water rose on the yardstick by two. If it is necessary to time the water for fifteen seconds measure the number of inches the water rose in fifteen seconds and multiply it by four.
 
Every inch in an eighteen inch diameter pit is approximately one gallon. In a twenty-four inch diameter pit one inch is approximately two gallons. If five inches of water entered an eighteen inch diameter pit in fifteen seconds, we would take five multiplied by four which equals twenty. Twenty is equivalent to twenty gallons of water in one minute.
 
One last important measurement is the height from the pump-port where the vertical discharge pipe connects. Measure the height of the vertical pipe. Most systems have a vertical pumping height of around ten feet.
 
Look at the manufacturers performance chart in the spec sheet. The manufacturers spec sheet includes a performance curve indication water volume pumped at a vertical height.
 
For example, if twenty gallons of water needs to be pumped per minute from the pit, the M53 will be a great choice since it can move up to 34 gallons per minute at a 10 feet vertical height. The backup pump which can move up to 30 gallons per minute is the 508-005. The combination system, 508-0006 would be best for your water pumping needs.
 
 

HOW TO SOLVE SIX COMMON PUMP PROBLEMS

1. If the pump will not start, check the following: the fuse or circuit breaker for blown, impeller for mechanical binding, motor or wiring for shorting, float assembly for being held down, or float switch for being defective.
2. If the motor overheats or trips circuit breaker or blows a fuse, check if voltage is correct or motor is shorted,
3. If pump starts and stops too often, a larger pit may be required, the check valve may have failed and needs replacement.
4. If the pump will not shut off, debris may be lodged under the float assembly and needs to be removed; the switch may be defective and require replacement; the gasket may be misaligned or worn out and needs replacement.
5. If the pump operates but delivers little or no water, the weep hole (vent hole) may be clogged and needs cleaning; the discharge head may too great for the pumps capacity and a larger horse power pump needs to be installed.
6. If the pumping capacity decreases after a period of use, check for a clogged discharge pipe line or clogged check valve.
 
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SIX PERIODIC MAINTENANCE TIPS

1. Clean the basin of debris. Debris can obstruct the float and impeller.
2. Clean the weep hole (air vent hole).
3. Clean the impeller.
4. Replace the switch after three to four years of heavy usage and less frequently if usage is light.
5. Clean the check valve of collected pebbles or debris.
6. Check the outside drainage pipe as well because it can get clogged.

Without performing periodic maintenance, the main-pump may fail during crucial times like heavy rainstorms; therefore maintenance is important as well as a backup sump for protection in case the electrical power fails or the main-pump fails.

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Quick Shop Zoeller Sump Pumps

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Choose the Zoeller sump pump type you wish to view or scroll to see them all.

 
 
 
 

Shop Zoeller Basic Series Automatic Submersible Sump Pumps

The Zoeller Automatic Submersible Basic Series Sump Pumps include 1052, 1073, 1075, 1096, 1099 and 49-Water Riddr.

 
 
 
 

Shop Zoeller Professional Series Automatic Submersible Sump Pumps

 
 
 
 

Shop Zoeller Professional Series Non-Automatic Submersible Sump Pumps

Zoeller N53 .33 HP Cast Iron Non-Automatic Submersible Sump Pump
 

N53

N53 1/3 HP cast-iron housing
Check N53 Now

 
Price At Time Of Publish $189.00.
Zoeller N55 .33 HP Bronze Non-Automatic Submersible Sump Pump
 

N55

N55 1/3 HP Bronze
Check N55 Now

 
Price At Time Of Publish $652.00.
Zoeller N57 .33 HP-Cast-Iron Non-Automatic Submersible Sump Pump
 

N57

N57 1-3 HP cast iron housing
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Price At Time Of Publish $453.00.
 
Zoeller N59 .33 HP Bronze Non-Automatic Submersible Sump Pump
 

N59

N59 1/3 HP Bronze
Check N59 Now

 
Price At Time Of Publish $3,145.00.
Zoeller N98 .5 HP-Cast-Iron Non-Automatic Submersible Sump Pump
 

N98

N98 1/2 HP cast-iron housing
Check N98 Now

 
Price At Time Of Publish $452.00.
 
 
 

Shop Zoeller Premium Series Automatic Submersible Sump Pumps

 
 
 

Zoeller Battery Backup Sump Pumps

These Zoeller Battery Backup Sump Pumps are made and tested in the Zoeller USA Factory.

 
 
 

Zoeller Combination (Primary + Battery Backup) Sump Pumps

These Zoeller Combination Sump Pumps are made and tested in the Zoeller USA Factory.

 
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Zoeller Water Powered Sump Pumps

This Zoeller Water Powered Backup Sump Pumps is made and tested in the Zoeller USA Factory.

540 Fex Water Powered Backup Sump Pump
 

540 Flex

540 Flex Upgraded Water Powered 1140 GPH @ 60 PSI
Check 540 Now

 
Price At Time Of Publish $198.00.
 
 
 

Shop Zoeller Sewage Pumps

These Zoeller Sewage Pumps are made and tested in the Zoeller USA Factory.

 
 
 

Shop Zoeller Laundry Drain Pumps

This Zoeller Laundry Drain Pump is made and tested in the Zoeller USA Factory.

 
 
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