Model M57 Mighty-Mate Automatic Cast Iron Effluent Pump - 115 V, 0.3 HP

We had the same pump before and we ordered the exact replacement for the defective one. Delivery was fast, package was quite torn, but everything looked ok. Have not run the pump yet, but the old one held up pretty well.

My previous two last for 16 years, just order two to replace them, all looks good

Just replaced an old same model pump. Worked without a problem for 12 yrs. very reliable.

I first found out about Zoeller pumps (and the M57 in particular) when my neighbor called saying their sump pump had stopped working, they had 2" of waster on the floor, and could I do anything. I went over to look, pulled out the pump (a Zoeller M57), and verified that the pump was indeed dead. They ordered a new one. When it came I installed it for them and took the old pump as my "payment" to see if I could figure out what was wrong with it. FIrst guess was a bad switch, and that turned out to be correct. I discovered that SupplyHouse.com sells a comolete array of replacement parts for Zoeller pumps, so I ordred a new one, put it in, and I now had a pump "as good as new." After messing about with the M57 for a couple of weeks, I decided I liked it, a lot. The ready availability of replacememnt parts, and a product that is designed to be repaired, impressed me greatly. In this day of disposable everything and a calculated produst lifetime a week longer than the warranty, the M57 is a much appreciated exception. The pump has a build date stamped on it. This pump was built i April 2012, just over 11 years ago. I'm not sure what the expected lifespan of a sump pump switch is, and of course it depends on how much it gets used, but 11 years seems plausible. One aspect of the design that I think could be better is the power cord water seal. When I replaced the switch I noticed that the power cord was loose and turned and slid easily through the seal. CLearly, it was quite likely not watertight anymore. Tightening the seal didn't help. I saw somewhere, I think, that Zoeller recommends taking the pump to an authorized repair center to replace the seal. That seems excessively inconvenient for what ought to be a simple fix. Investigating further, I unscrewed the seal nut and pulled an inch or two of the cord through. THe problem was apparent. The jaccket on the cord had taken a permanent set where it was clamped, so the seal, even when fully tightened, no longer exe

I use this product for extreme duty in a oily sludge type of water it works great and the original same pump I just replaced lasted 5 times longer than the competition.This pump is in use 24/7

Product is proven the only pump I by for industrial work & home. Supply House .com is now the place I will buy from. Other shipping company failed shipping product twice without damage and long shipping delays.

In the days of 'engineered to fail' manufacturing, its great to find products that perform well for many years. I've bought just 3 of these pumps in the last 42 years, with one pump lasting 17 years.

I've had 2 other Zoeler pumps. They work great, last a long time and are built solid.

I just replaced our original with the same pump which lasted 10 years. The pump works like a champ but the switch just wore out since our pump runs year round.

Great prices, fast delivery and easy process. great customer service too.