Faithought FAI-26-750W
A bargain inverter booster for someone willing to trade a stated warranty for price.
Amazon $199.99$199.99
A booster pump sits on the water line where it enters the house and raises the pressure when the city supply, a hilltop location or a gravity-fed tank leaves showers weak. These rankings compare what the makers publish on the same terms: how much water it moves for the money, how much pressure it adds, whether it protects itself, how loud it is and how long it’s covered.
Drive is the first choice. A variable speed pump has an inverter that speeds the motor up and down to hold one set pressure, so a shower doesn’t surge when a toilet flushes. A fixed speed pump runs flat out whenever a pressure or flow switch turns it on; it costs less and is simpler, but pressure swings more and it’s louder.
Flow is the second. A small house with one bathroom gets by on 8 to 10 gpm; two or three bathrooms running at once want 15 to 25 gpm.
Protection is the third. A booster that runs with no water coming in burns out in minutes, so dry-run protection matters most on a tank or a weak supply.
Top Picks
Etespie 70 PSI Booster Pump
A budget inverter booster for a small house or apartment with weak pressure. Bigger homes need more flow.
Amazon $179.99$179.99
Shop by Drive
Variable speed
13 rankedInverter pumps that speed up and slow down to hold one set pressure, so showers stay steady.
Top rated: Faithought FAI-26-750W $199.99
Fixed speed
14 rankedPumps switched on and off by a pressure or flow switch: cheaper, simpler and louder.
Top rated: Simer 4075SS-01 Booster Pump $660
Narrow It Down
Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Best Variable Speed Water Booster Pumps
- Faithought FAI-26-750W#1 of 13Full review
A bargain inverter booster for someone willing to trade a stated warranty for price.
Amazon $199.99$199.9925 gpm180 ft- - Etespie 70 PSI Booster Pump#2 of 13Full review
A budget inverter booster for a small house or apartment with weak pressure. Bigger homes need more flow.
Amazon $179.99$179.9920 gpm148 ft- - Trivonexa 0.8HP Booster Pump#3 of 13Full review
A low cost inverter booster for a small home, best on a supply that never runs dry.
Amazon $189.99$189.9921 gpm162 ft0.8 HP - Wassermann WASBPGT55#4 of 13Full review
A mid priced inverter booster with a longer warranty than its rivals, for a home on weak city pressure.
Amazon $360.08$360.0824.2 gpm180 ft1 HP - GWANZI H600 PRO#5 of 13Full review
A cheap, compact inverter booster for a home on weak city pressure that wants app control. Expect a short warranty.
Amazon $299.99$299.9925 gpm170 ft1.2 HP
Best Fixed Speed Water Booster Pumps
- Simer 4075SS-01 Booster Pump#1 of 14Full review
A simple inline booster for a city supply that is a little weak, from a long established US pump brand. Check stock before counting on it.
Amazon $660$66024 gpm92 ft3/4 HP - Davey BT30-30 Torrium2#2 of 14Full review
For a large home or a house plus irrigation that needs a lot of flow at a moderate boost. Plan for a 240 V outlet.
Amazon $1,420$1,42030 gpm113 ft1.5 HP - Davey BT20-40 Torrium2#3 of 14Full review
For a large or multi-storey house with a very weak supply. Plan for a 240 V outlet.
Amazon $1,287$1,28720 gpm176 ft1.2 HP - Grundfos SCALA1 5-55 230V#4 of 14Full review
For houses fed from a cistern or break tank that need a lot of head. City water users with some inlet pressure should look at a variable speed pump instead.
Amazon $1,122.89$1,122.89-180 ft1.1 HP - VEVOR 5 GPM 110V Pressure Pump#5 of 14Full review
A low cost plug-in pump for a cabin, garden or tank supply where one fixture runs at a time.
Amazon $82.90$82.905 gpm139 ft-
How We Rank
Each pump is ranked against others with the same drive, and scored on its price per gallon a minute, its flow, the pressure it adds, its dry-run and overheat protection, its noise and its warranty.
| Factor | Measures | Weight |
|---|---|---|
| Value | price per gallon a minute of maximum flow | 30% |
| Flow | maximum flow | 15% |
| Pressure | maximum head the pump adds | 15% |
| Protection | stops itself on running dry or overheating | 10% |
| Noise | rated sound level | 10% |
| Warranty | warranty length | 20% |
How we rank explains each factor in full.