WAYNE CDU800 1/2 HP Submersible Sump Pump
- Sump Pump
- Corded electric
- Steel
- 1
- Better rated than 90%
A durable, higher output pump worth the price if the sump pit genuinely floods hard, given its cast iron build, tested float switch and 3-year warranty.
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How it ranks among the 10 sump pumps we track
4.8★ across 1,300 Amazon ratings, Bayesian-smoothed toward the category average.
1,300 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
500+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 10 sump pumps we track - how the scorecard works · full sump pumps data report. Confidence: high - strong rating volume and complete data.Updated 7 days ago. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
The WAYNE CDU800 is a 1/2 HP submersible sump pump built with a cast iron and stainless steel housing, rated to move up to 5,100 gallons per hour through a 1-1/2 inch NPT discharge, backed by a 3-year warranty.
Its vertical float switch is tested to 1 million cycles, which is the component most likely to fail first in a pump that runs automatically for years. A top suction design is meant to reduce clogging and remove the need for a weep hole that some competing pumps require.
- 1/2 HP motor, up to 5,100 GPH pumping capacity
- Cast iron and corrosion resistant stainless steel construction
- Vertical float switch tested to 1 million cycles
- 1-1/2 in NPT discharge, USA assembled, 3-year warranty
Who it's for
Fits a basement or crawlspace sump pit that sees heavy rainfall or snow melt and needs a pump with real horsepower and a corrosion resistant housing for long term automatic use. Overkill for a small pit with only occasional, light water intrusion.
Strengths and trade-offs
Drawn from this product's published specifications.
- High 5,100 GPH output for heavy water loads
- Cast iron and stainless steel corrosion resistant build
- Float switch tested to 1 million cycles
- No weep hole needed thanks to top suction design
- 1/2 HP size may be more than a small pit needs
- No listed reviews yet to confirm long term reliability
Performance notes
The 1/2 HP motor is rated to move up to 5,100 gallons per hour, and the vertical float switch triggers the pump automatically as water rises, with the switch tested to 1 million cycles for long term reliability. The top suction intake is designed to pull in less debris than a bottom suction design and to avoid the air lock that would otherwise require drilling a weep hole.
Specifications
| Brand | Wayne |
|---|---|
| Model | CDU800 |
| Dimensions & fit | |
| Item Weight | 12 pounds |
| Maximum Lifting Height | 20 feet |
| Item Dimensions L x W x H | 9 × 9 × 12 inches |
| Capacity & performance | |
| Flow Rate | 85 gpm |
| Power & efficiency | |
| Power Source | Corded electric |
| Voltage | 100 volts |
| Horsepower | 1 |
| Construction & materials | |
| Material Type | Steel |
| Color | Black |
| Included components | |
| Unit Count | 1 |
| Included Components | Unit Instruction Guide |
| Warranty & support | |
| Manufacturer Warranty Description | 3 years |
| Other details | |
| Number of Items | 1 |
| Item Type Name | Sump Pump |
| Product Style | 1/2 HP Coated Steel |
| Specific Uses For Product | basement water removal |
Other Wayne sump pumps
How it compares
This product against the closest alternatives we track in sump pumps.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| WAYNE CDU800 1/2 HP Submersible Sump PumpThis product | 4.8 / 5 | 1,300 | 4.6 / 5 |
| Superior Pump 91250 1800GPH Thermoplastic Submersible Utility Pump with 10-Foot CordSuperior Pump | 4.6 / 5 | 26,000 | 4.7 / 5 |
| Zoeller M53 Mighty-mate Submersible Sump PumpZoeller | 4.6 / 5 | 3,200 | 4.3 / 5 |
| SumpJet® Water Powered Backup Emergency Sump PumpLiberty Pumps | 4.6 / 5 | 1,300 | 4.2 / 5 |
| Little Giant 1/3 HP Cast Iron Submersible Sump PumpLittle Giant | 4.2 / 5 | 587 | 4.1 / 5 |
Similar sump pumps from other brands
Questions about the Wayne CDU800
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
How much water can the Wayne CDU800 move?
Up to 5,100 gallons per hour with its 1/2 HP motor.
What size discharge pipe does the Wayne CDU800 use?
A 1-1/2 inch NPT discharge, which meets standard building codes.
Does the Wayne CDU800 need a weep hole drilled?
No, its top suction design is built to avoid air lock without one.