Zoeller 98-0001 Submersible Sump Review

The Zoeller 98-0001 doesn’t only have an Amazon.com name that’s hard to say in one breath, let alone five times fast. It’s also jam-packed with quality specs you’d expect from a top notch sump pump with a high-caliber pumping action, as evidenced by its name as well. At ½ HP, it’s powerful than many other pumps that usually only have ¼ HP motors or lower instead.

Furthermore, the Zoeller 98-0001 Effluent Pump is built like a Cadillac, in that it’s made in the USA, it’s robust in its construction, and it’s heavy duty in its function. This pump weighs around 40 pounds and is built to last at least until two years.


An Excellent Dewatering Pump with Thermal Protection

The Zoeller 98-0001 from Flow-Mate works great whether you wish to get rid of water in your basement from a flood or a water main leak as well as for sump or dewatering of septic tanks. It is thermal overload protected and it has cast iron stainless steel screws to keep it together.

Furthermore, its mechanical switch is two-pole float operated and is capable of passing ½ inch solids from the tank or basement to the hose then out of your house (and hair). This 115-volt wonder works at settings of 3,420 gallons per hour (GPH) at five feet, 3,060 GPH at 10 feet, and 2,580 GPH at 15 feet. Its pumping rate is quite amazing to behold and more nuanced compared to its competitors. 

Warranty, Cast Iron Construction, And Other Specs of Note 

The Zoeller 98-0001 Submersible Sump Pump includes a one-year warranty (which means it’s replaceable with no questions asked) plus a pump and motor housing that’s cast iron. This ensures that your unit will last longer than the warranty guarantee or your money back. Even the switch case and base are made of cast iron as well. On top of that, the finish is powder-coated with epoxy to make sure that the unit stays corrosion-resistant all throughout its use (since it has a lot of contact with water, septic tank wastes, and other corroding materials). 

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Here are the specs of the Zoeller 98-0001 Submersible Sump/Effluent Pump.

  • Pumping Rate: The Zoeller 98-0001 Submersible Sump/Effluent Pump is capable of pumping at a rate of 72 GPM with its five foot head. It varies from there, going at 3,060 GPH at 10 feet and 2,580 GPH at 15 feet.
  • On Point and Off Point Specs: The pump goes off point at three inches and on point at 9½ inches.
  • Shut-Off Head: The shut-off head goes at 23 feet.
  • Cord: The three-wire cord of the sump pump is 15-feet long and made of neoprene.
  • Vortex Impeller: This unit also comes complete with plastic vortex impeller for better handling of suspended solids.
  • Spherical Solid Passage: Speaking of solids, the pump is capable of passing ½ inch of spherical solids.
  • Permanent Slip Capacitor Motor: The permanent slip capacitor monitor is hermetically sealed and oil-filled to boot.
  • Reset Thermal Overload Protection:If it passes a certain temperature, you’ll get protection from overload due to its thermal protection system. 

Zoeller 98-0001 Reviews 

How much do I love the Zoeller 98-0001 Submersible Sump Pump? Let me count the ways! The first thing that I noticed about the Zoeller 98-0001 Submersible Sump/Effluent Pump that I loved is the fact that it has no sheet metal parts that will corrode (everything is made of cast iron and other non-corrosive materials) and no screens that will get clogged when solids bigger than half an inch were to pass through them. I also love how long it can operate without worrying about thermal overload or malfunction due to the safety measures included in it.

The Zoeller 98-0001 Submersible Sump/Effluent Pump has received 237 reviews and has a 4.6 rating on Amazon.com.


There is more than one Amazon.com customer complaint in regards to how unsatisfactory the Zoeller customer service is. There are at least two users who have undergone the customer service issues of the company. Emailing them about issues with the pump takes about a day before you can get a reply, most of which are automated. They’re also unwilling to ship a new pump unless they’re sent the old one in order to confirm that any damage to it was from shipping. They have so many safeguards included before you could get compensation or expedite a replacement.

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There is no doubt that the Zoeller customer representatives make it difficult to get things done. Some might send switches for replacement for your pump, only to end up having another representative saying that doing so voids the warranty. You’ll end up like a ping pong ball with these customer service reps sometimes.

Regardless of that, the pump itself is a must-buy that’s constructed with cast iron and even includes a handy vortex impeller for better solid suspension removal. The class of the cast iron is 25-30 with 25000# tensile strength, which means it’s pretty solid and long-lasting. What’s more, its GPH pumping capabilities are variable and thusly flexible or adaptable to the circumstances. Check out other best sump pumps here!

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