Wayne CDU800
#4 in 1/2 HP and upFull review
For a wet or deep basement on a budget: it pumps as much as pumps costing twice as much.
Amazon $163.25$163.25
The Wayne CDU800 is the better sump pump overall, rated 3.6 to 3.1. The Wayne CDU800 leads on warranty and flow. The Wayne SPF50 costs $17.50 less ($145.75 vs $163.25).
Wayne SPF50
#9 in 1/2 HP and upFull review
A cheap way to get 1/2 HP flow in a light pump. Buyers who want a longer warranty should pay a little more for the Wayne CDU800.
Amazon $145.75$145.75
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.
Which should you buy?
- Choose the Wayne CDU800 for warranty (3-year warranty vs 1-year warranty) and flow (3,840 GPH at 10 ft vs 3,360 GPH at 10 ft).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 1/2 HP and up sump pump; a clear win is highlighted. How we rank explains each one.
| Factor weight | Wayne CDU800 | Wayne SPF50 |
|---|---|---|
| Overall rating | 3.6/5 | 3.1/5 |
| Value 30% | 95 $42.51 per 1,000 GPH at 10 ft ($163.25, 3,840 GPH) | 93 $43.38 per 1,000 GPH at 10 ft ($145.75, 3,360 GPH) |
| Flow 30% | 54 3,840 GPH at 10 ft | 34 3,360 GPH at 10 ft |
| Build 20% | 33 switch fits a narrow pit | 33 switch fits a narrow pit |
| Warranty 20% | 50 3-year warranty | 0 1-year warranty |
Specifications
| Wayne CDU800 | Wayne SPF50 | |
|---|---|---|
| Pumping | ||
| Motor | 1/2 HP | 1/2 HP |
| Type | Submersible | Submersible |
| Flow at 10 ft | 3,840 GPH | 3,360 GPH |
| Flow at 0 ft | 5,100 GPH | 4,300 GPH |
| Max lift | 25.5 ft | 21 ft |
| Discharge | 1.5 in | 1.5 in |
| Switch and build | ||
| Switch | Vertical float | Vertical float |
| Cast iron housing | No | No |
| Alarm or monitoring | No | No |
| Wi-Fi | No | No |
| Cord length | 8 ft | 8 ft |
| Weight | 22 lb | 12 lb |
| Warranty | 3 years | 1 year |