Zoeller Pumps
Zoeller sump pumps, sewage pumps, effluent pumps, and grinder pumps in cast iron construction. The Mighty-Mate M53 is one of the best-selling sump pumps in North America.
Zoeller Pumps Product Lines
Certifications & Standards
Pumps How-To Guides
View All →How to Test Your Sump Pump
Test your sump pump in 10 minutes -- verify it activates, pumps, and shuts off, plus inspect the float switch, check valve, discharge line, and backup system.
How to Install a Sump Pump
Install or replace a sump pump for reliable basement flood protection -- pump selection, pit prep, check valve, discharge line routing, and the testing routine that keeps it working.
How to Install a Recirculation Pump
Stop wasting water waiting for it to get hot -- install a recirculation pump using a dedicated return line or a comfort valve system (no new piping), with timer and sensor options.
Common Pumps Problems
View All →Sump Pump Won't Turn On
Basement flooding emergency waiting to happen. Usually electrical (tripped breaker, unplugged cord, GFCI), mechanical (stuck float), or burned-out motor. Diagnosing takes minutes and prevents thousands in water damage.
Sump Pump Runs Constantly
Runs non-stop or cycles every few minutes? Will burn out prematurely. Stuck float, missing check valve, undersized pump, or high water table. Each has a different fix.
Noisy Pump Operation
Grinding means worn bearings. Rattling means debris or loose hardware. Banging means check valve slam. Each sound points to a different fix. Address it before a minor noise becomes a complete pump failure.