Red Lion RL-SC33T
#6 in Up to 1/3 HPFull review
For a standard or wide pit where a well priced cast iron 1/3 HP pump with good flow is wanted.
Amazon $182$182
The Red Lion RL-SC33T is the better sump pump overall, rated 3.3 to 3.0. The Red Lion RL-SC33T leads on flow. The Liberty Pumps S37 costs $17 less ($165 vs $182).
Liberty Pumps S37
#12 in Up to 1/3 HPFull review
For a newer house or a gritty pit where a low cost Liberty pump that resists debris jams is enough.
Amazon $165$165
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 Red Lion RL-SC33T for flow (2,460 GPH at 10 ft vs 2,100 GPH at 10 ft).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every up to 1/3 HP sump pump; a clear win is highlighted. How we rank explains each one.
| Factor weight | Red Lion RL-SC33T | Liberty Pumps S37 |
|---|---|---|
| Overall rating | 3.3/5 | 3.0/5 |
| Value 30% | 48 $73.98 per 1,000 GPH at 10 ft ($182, 2,460 GPH) | 43 $78.57 per 1,000 GPH at 10 ft ($165, 2,100 GPH) |
| Flow 30% | 64 2,460 GPH at 10 ft | 40 2,100 GPH at 10 ft |
| Build 20% | 33 cast iron motor housing | 33 switch fits a narrow pit |
| Warranty 20% | 50 3-year warranty | 50 3-year warranty |
Specifications
| Red Lion RL-SC33T | Liberty Pumps S37 | |
|---|---|---|
| Pumping | ||
| Motor | 1/3 HP | 1/3 HP |
| Type | Submersible | Submersible |
| Flow at 10 ft | 2,460 GPH | 2,100 GPH |
| Flow at 0 ft | 3,350 GPH | - |
| Max lift | 25 ft | 25 ft |
| Discharge | 1.5 in | 1.5 in |
| Running current | 4.4 A | 6.5 A |
| Switch and build | ||
| Switch | Tethered float | Vertical float |
| Cast iron housing | Yes | - |
| Alarm or monitoring | No | No |
| Wi-Fi | No | No |
| Cord length | 10 ft | 10 ft |
| Weight | - | 14 lb |
| Warranty | 3 years | 3 years |