Review: Zoeller M53 Mighty-Mate 1/3 HP Submersible Sump Pump

Our Ratings
  • Quality
  • Durability
  • Reliability


Overall this is a good sump pump available in the market. It has got 315 Positive Customer Reviews on Amazon.

Zoeller is a pump manufacturing company based in Louisville, Kentucky. It began as a family owned company over 70 years ago. In the United States of America, it is the oldest and most independent pump manufacturing company at the moment. So, it’s difficult to dispute against a top Zoeller product like the Zoeller M53 Mighty Mate Submersible Sump Pump. This model is the favourite among lots of contractors & plumbers and has become the standard in the industry.

Once installed, a submersible sump pump is quite difficult to remove. In order to make room for another new sump pump, the assembly has to be completely removed. For this reason, it is important to carefully study the product, for specifications on paper may be misleading. However, it’s rather important to consider an economical product like the Zoeller M53 Mighty Mate Submersible Sump Pump with a less complex assembly than its competitors in the market.

Product Specifications

Product Measurements: 7.8 x 10.5 x 10.5 inches

Product Weight: 21 pounds

Product Type: Submersible Sump Pump

Motor: 1/3 Horse Power

Maximum Speed: 1550 RPM

Discharge: 1 ½” NPT

Power Cord: 9 ft

Warranty: 1 year

Detailed features of the Zoeller M53 Mighty-Mate 1/3 HP Submersible Sump Pump

Build and design feature: The external portion of the sump pump needs to be capable of enduring the steady flow of water since they require functioning in really damp conditions. Most often, this causes an excessive load of pressure on the delicate internal parts. In relation to the Zoeller M53 Mighty Mate Submersible Sump Pump, this problem is resolved with a cast iron covering that covers the motor’s whole structure. The cast iron covering allows heat to disperse immediately into the water, efficiently and quickly. This ensures additional safety of the internal components.

It’s a fact that the cast iron is coated and dried with epoxy which protects the covering from corrosion due to prolonged periods of time in water. Near the bottom of the product there is a small hole. This allows little quantities of water to enter through it but doesn’t allow entry into the sump pumps body. As a result, an air pocket is prevented from forming between the switch guard level and the discharge right above.

Handle, discharge and power cord (Main Exterior Parts): With not much difficulty, the product is easily carried around by a suitable stainless steel handle. With stringent submersion requisites, its 3 metre long power cord is adequately hardy and secure. In the basement, this ensures that the product does not produce accidental electric risks.

Manufactures offer a 1-1/2 inch NPT discharge which accepts fitting of the majority of standard PVC or similar pipes. To ensure the smooth functioning of the sump pump, simultaneously, the diameter is important to ascertain that the pipe has the capability of moving up to 1/2 inch of solids.

Interior Motor and Casing: Through a 4 pole motor, this submersible sump pump is proficient to provide 1/3 Horse Power with 1550 RPM of maximum speed. Plumbing experts rate this being the best available power in the sump pump industry. Also with its overheating switch, the product ensures it works well for prolonged periods with no damages due to surplus heat it produces. Furthermore, the pump is permanently sealed hermetically. A shaft seal prepared from ceramic and carbon protects oil from seeping out from the motor neither gives water or other debris floating about any means of access.

Impeller, Switch Assembly and Safety: A choice of either a cast iron impeller or a plastic impeller (glass filled metal insert) is offered. In relation to its crucial operation – suction with no clogging, both perform uniformly well. The impeller’s grooves are designed specifically to ensure the motor’s capability of withdrawing water efficiently with no blockages from the surplus water pressure and /or solid particles.

The Zoeller Mighty-Mate automatically switches on and off through the switch assembly. A float connects to the 2 pole switch which is a vertical extrusion on its sides. As the float rises with a raise in the water level, the motor switches on. For its smooth function in varied situations, the float is constructed of durable polypropylene.

A switch guard is also provided in addition. This ensures the switch’s capability of unrestricted function without considering the enclosure’s natural problems. The switch guard sticking out like a straight handle, guarantees free operation. With a somewhat shorter 3 – 6 year lifetime and regardless of its features, the switch guard needs subsequent changes. Besides, changing a switch guard can be done with regular handy tools, since it’s not a difficult job.

Benefits of using the product

  • Exceptional cast iron epoxy painted
  • Hermetically sealed with powerful 1/3 HP motor
  • Adequate length power cord
  • For easy portability handle provided
  • Wide discharge that meet standard sized pipe
  • Drawbacks of the product
  • Relatively short lifespan switch
  • On impact, the shaft connecting float to switch is liable to dislocation

So, with all of its heavy duty features described in detail above, the Zoeller Mighty-Mate Submersible Sump Pump offers the ideal blend of a hardy satisfying exterior, an excellent motor and a reasonably good price. This is every sump pump owners hope. With a good discharge size, automatic functioning and a overheating switch, neither excess water nor heating and waste in the pit can prevent this product from its capability of working for lengthy periods of time.

Moreover, prior to leaving the factory, every pump is run under water and pressure tested for any kind of leaks. So, if there is a finished basement, an expensive mechanical equipment or product that deserves protection, consider this pump. It comes with a 1 year warranty, with a further option to extend to 3 years. This sump pump would have also been thought to be priced higher than other submersible sump pumps, but in actual fact, it is quite comparable to the lower priced sump pumps on offer.

Taking into consideration the above points, the Zoeller M53 Mighty Mate Submersible Sump Pump is undoubtly a superior product and reinforces Zoeller’s reputation for producing excellent products.

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