Wayne CDU790
#1 in Up to 1/3 HPFull review
A strong value for an ordinary basement: more flow at 10 ft than most 1/3 HP pumps for a modest price.
Amazon $136.90$136.90
The Wayne CDU790 rates 4.1 among up to 1/3 HP sump pumps; the Liberty Pumps 287 rates 2.9 among 1/2 HP and up ones. The Wayne CDU790 costs $186.35 less ($136.90 vs $323.25).
Liberty Pumps 287
#13 in 1/2 HP and upFull review
For a deep basement or a pit that fills fast, where a strong cast iron pump that fits a narrow pit is worth paying for.
Amazon $323.25$323.25
Prices were last checked October 31, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
These two sit in different size classes (up to 1/3 HP and 1/2 HP and up), and each is scored against the reference points for its own class, so a rating says how well each does among its own size peers. How we rank explains each factor.
| Factor weight | Wayne CDU790 | Liberty Pumps 287 |
|---|---|---|
| Overall rating | 4.1/5 | 2.9/5 |
| Value 30% | 91 $44.74 per 1,000 GPH at 10 ft ($136.90, 3,060 GPH) | 24 $97.95 per 1,000 GPH at 10 ft ($323.25, 3,300 GPH) |
| Flow 30% | 100 3,060 GPH at 10 ft | 32 3,300 GPH at 10 ft |
| Build 20% | 33 switch fits a narrow pit | 67 cast iron motor housing, switch fits a narrow pit |
| Warranty 20% | 50 3-year warranty | 50 3-year warranty |
Specifications
| Wayne CDU790 | Liberty Pumps 287 | |
|---|---|---|
| Pumping | ||
| Motor | 1/3 HP | 1/2 HP |
| Type | Submersible | Submersible |
| Flow at 10 ft | 3,060 GPH | 3,300 GPH |
| Flow at 0 ft | 4,600 GPH | 4,140 GPH |
| Max lift | 22.5 ft | 39 ft |
| Discharge | 1.5 in | 1.5 in |
| Running current | - | 8 A |
| Switch and build | ||
| Switch | Vertical float | Vertical float |
| Cast iron housing | No | Yes |
| Alarm or monitoring | No | No |
| Wi-Fi | No | No |
| Cord length | 8 ft | 10 ft |
| Weight | 22 lb | 29 lb |
| Warranty | 3 years | 3 years |