Why it matters
The CDU1000 is a 1 HP sump pump rated at up to 6,100 GPH, with a stainless steel motor housing and cast iron volute.
An integrated vertical float fits narrow pits, top suction prevents air lock, and the 1-1/2 in NPT discharge meets standard codes. Wayne assembles it in the USA with a five-year warranty.
Who it's for, and who should skip it
Good fit if
- Very wet basements
- High water tables
- Long or high discharge runs
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
- Dry basements
Pros and cons
Pros
- 1 HP
- 5-year warranty
- Vertical float
Cons
- Overkill for most
- Price
- Short-cycles in small pits
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.
- Use the sizing calculator with your lift and pipe run before choosing horsepower; bigger isn't better if it short-cycles.
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 | Stainless Steel | Retailer |
|---|---|---|
| Dimensions (seller) | 10.5"L x 9"W x 11"H | Retailer |
| Product weight | 19 lb | Retailer |
| Max flow (maker) | 102 GPM | Retailer |
| Voltage | 120 V | Retailer |
| Horsepower | 1 HP | Retailer |
| Model number | 58321-WYN2 | Retailer |
| Warranty | 5 Year Manufacturer's Warranty | Retailer |
| Switch | Vertical float switch | Retailer |
| Housing | Cast Iron & Stainless Steel | Retailer |
Alternatives worth comparing
More sump pumps we cover
- Zoeller M63 Sump Pump
- Liberty Pumps 287 Sump Pump
- Zoeller M98 Flow-Mate Sump Pump
- Red Lion RL-SP33PED Pedestal Sump Pump
All sump pumps, compared in one table · Every Wayne product we cover
Final verdict
For basements that take on a lot of water.
Where to buy
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