Why it matters
The M63 is a 3/10 HP oil-filled cast iron sump pump with a built-in snap-action float switch. Zoeller rates it at up to 4,320 GPH.
Its 9 ft cord ends in an LED plug that shows the pump has power. Zoeller backs it with a five-year limited warranty, longer than the older Mighty-Mates.
Who it's for, and who should skip it
Good fit if
- Most basement pits
- Owners who want a long warranty
- Replacing an M53
Look elsewhere if
- Sewage or toilet waste
- Draining pools or floors (a utility pump is cheaper)
- Homes that need a backup but have only one pump
Pros and cons
Pros
- 5-year warranty
- LED power plug
- Oil-filled cast iron
Cons
- Price
- 9 ft cord
- Needs pit room for the float
Limitations to weigh
- Maximum head is where flow drops to zero; at your lift the pump moves less than its maximum flow. Size it with the sizing calculator.
- Fit a check valve on the discharge so water in the pipe doesn't fall back into the pit after each cycle.
- Plug it into its own grounded outlet; many makers warn against extension cords.
Specifications
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Material | Cast Iron | Retailer |
|---|---|---|
| Dimensions (seller) | 10.25"L x 7.75"W x 10.25"H | Retailer |
| Max flow (maker) | 43 GPM | Retailer |
| Voltage | 115 V | Retailer |
| Horsepower | 3/10 HP | Retailer |
| Model number | 63-0001 | Retailer |
| Power cord | 9 foot cord | Retailer |
| Housing | cast iron | Retailer |
Alternatives worth comparing
More sump pumps we cover
- Liberty Pumps 287 Sump Pump
- Red Lion RL-SP33PED Pedestal Sump Pump
- Superior Pump 92333 Pedestal Sump Pump
- Superior Pump 92551 Pedestal Sump Pump
All sump pumps, compared in one table · Every Zoeller product we cover
Final verdict
A strong all-round choice with a long warranty.
Where to buy
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