Red Lion RL-SP50T
#15 in 1/2 HP and upFull review
For a standard pit that needs 1/2 HP lift on a budget.
Amazon $137.97$137.97
The Red Lion RL-SP50T is the better sump pump overall, rated 2.6 to 2.4. The Red Lion RL-SP50T leads on value. The Liberty Pumps 457 wins on build and warranty. The Red Lion RL-SP50T costs $105.08 less ($137.97 vs $243.05).
Liberty Pumps 457
#17 in 1/2 HP and upFull review
For a narrow pit that needs more lift than a 1/3 HP pump, where a light pump with a magnetic float is preferred over cast iron.
Amazon $243.05$243.05
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-SP50T for value ($51.16 per 1,000 GPH at 10 ft ($137.97, 2,697 GPH) vs $92.06 per 1,000 GPH at 10 ft ($243.05, 2,640 GPH)).
- Choose the Liberty Pumps 457 for build (switch fits a narrow pit vs none of the three) and warranty (3-year warranty vs 2-year warranty).
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 | Red Lion RL-SP50T | Liberty Pumps 457 |
|---|---|---|
| Overall rating | 2.6/5 | 2.4/5 |
| Value 30% | 79 $51.16 per 1,000 GPH at 10 ft ($137.97, 2,697 GPH) | 29 $92.06 per 1,000 GPH at 10 ft ($243.05, 2,640 GPH) |
| Flow 30% | 8 2,697 GPH at 10 ft | 6 2,640 GPH at 10 ft |
| Build 20% | 0 none of the three | 33 switch fits a narrow pit |
| Warranty 20% | 25 2-year warranty | 50 3-year warranty |
Specifications
| Red Lion RL-SP50T | Liberty Pumps 457 | |
|---|---|---|
| Pumping | ||
| Motor | 1/2 HP | 1/2 HP |
| Type | Submersible | Submersible |
| Flow at 10 ft | 2,697 GPH | 2,640 GPH |
| Flow at 0 ft | 3,523 GPH | 3,180 GPH |
| Max lift | 26 ft | 34 ft |
| Discharge | 1.5 in | 1.5 in |
| Running current | 6.5 A | 7.3 A |
| Switch and build | ||
| Switch | Tethered float | Vertical float |
| Cast iron housing | No | No |
| Alarm or monitoring | No | No |
| Wi-Fi | No | No |
| Cord length | 8 ft | 25 ft |
| Weight | - | 12.5 lb |
| Warranty | 2 years | 3 years |