Seaflo 56A Variable Speed 5.0 GPM
#1 in 4 GPM and upFull review
The best overall pick: a variable-speed 5 GPM pump that keeps the shower steady while other taps open, at well under the price of other variable-speed pumps.
Amazon $159.99$159.99
The Seaflo 56A Variable Speed 5.0 GPM is the better RV water pump overall, rated 4.2 to 3.4. The Seaflo 56A Variable Speed 5.0 GPM leads on features, value and warranty. The Jabsco Par-Max HD6 wins on flow. The Seaflo 56A Variable Speed 5.0 GPM costs $106.48 less ($159.99 vs $266.47).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Jabsco Par-Max HD6
#4 in 4 GPM and upFull review
The highest-flow pump here, 6 GPM at 60 psi, for big boats and multi-bath motorhomes that can feed its 18 A draw.
Amazon $266.47$266.47
Which should you buy?
- Choose the Seaflo 56A Variable Speed 5.0 GPM for features (variable speed, internal bypass, runs dry without damage vs thermal protection), value ($32 per GPM ($159.99, 5 GPM) vs $44.41 per GPM ($266.47, 6 GPM)) and warranty (4-year warranty vs 3-year warranty).
- Choose the Jabsco Par-Max HD6 for flow (6 GPM rated open flow vs 5 GPM rated open flow).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 4 GPM and up RV water pump; a clear win is highlighted. How we rank explains each one.
| Factor weight | Seaflo 56A Variable Speed 5.0 GPM | Jabsco Par-Max HD6 |
|---|---|---|
| Overall rating | 4.2/5 | 3.4/5 |
| Value 25% | 51 $32 per GPM ($159.99, 5 GPM) | 30 $44.41 per GPM ($266.47, 6 GPM) |
| Flow 20% | 75 5 GPM rated open flow | 100 6 GPM rated open flow |
| Pressure 15% | 100 70 psi shut-off | 86 60 psi shut-off |
| Efficiency 10% | 71 0.50 GPM per amp (10 A max) | 24 0.33 GPM per amp (18 A max) |
| Features 15% | 75 variable speed, internal bypass, runs dry without damage | 15 thermal protection |
| Warranty 15% | 100 4-year warranty | 67 3-year warranty |
Specifications
| Seaflo 56A Variable Speed 5.0 GPM | Jabsco Par-Max HD6 | |
|---|---|---|
| Performance | ||
| Rated open flow | 5 GPM | 6 GPM |
| Shut-off pressure | 70 psi | 60 psi |
| Max current draw | 10 A | 18 A |
| Price per GPM | $32 | $44.41 |
| Self-priming lift | 6 ft | 7 ft |
| Features | ||
| Control | Variable speed | Pressure switch |
| Diaphragm chambers | 5 | 5 |
| Internal bypass | Yes | - |
| Runs dry | Yes | - |
| Thermal protection | - | Yes |
| Build | ||
| Weight | - | 7 lb |
| Warranty | 4 years | 3 years |