A variable speed booster pump holds one set pressure whatever is running in the house, and slows down to a quiet hum for a single tap. Most are compact all-in-one units with the controls, pressure sensor and dry-run protection built in, so they install in a small space without a pressure tank.
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.
Full ranking 13
- 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 - CrestWave 80PSI Booster Pump#6 of 13Full review
A low cost all-in-one inverter booster for a home on city water or a storage tank. Check the protection features before leaving it unattended.
Amazon $299.99$299.9925 gpm150 ft- - Aquastrong Smart 45#7 of 13Full review
An all-in-one inverter booster sold direct by Aquastrong for a house on weak city pressure. A cheaper alternative to a SCALA2 if you accept a louder pump.
Amazon $711$71125 gpm150 ft- - Aidpath EVO BOOST5#8 of 13Full review
A strong, outdoor rated inverter booster for a larger home with weak pressure. The short warranty is the trade off for the price.
Amazon $521.88$521.8826.5 gpm197 ft1.2 HP - DAB Esybox Mini3#9 of 13Full review
A compact, quiet inverter booster for a single home that wants a large pressure range and room to add a second pump. Check the voltage and shop around on price.
Amazon $1,547$1,54721.1 gpm180 ft1.1 HP - GWANZI K90S600L#10 of 13Full review
An inline inverter booster with a stainless shell for tight spaces. The cheaper H600 PRO from the same maker outpumps it.
Amazon $399.99$399.9922 gpm150 ft1 HP - DAB E.SYBOX 230V#11 of 13Full review
A high flow inverter booster for a large home with a 230 V supply. Hard to recommend at the Amazon price without fuller published specs.
Amazon $2,300$2,30032 gpm210 ft- - Grundfos SCALA2 3-45 115V#12 of 13Full review
The benchmark compact inverter booster for a house of up to three floors and eight taps on weak city pressure. Pay for it when quiet running and steady showers matter more than price.
Amazon $879$879-148 ft- - Grundfos SCALA2 3-45 230V#13 of 13Full review
The same quiet SCALA2 for a pump room wired for 240 V. Buy the 115 V version unless 240 V is all you have.
Amazon $1,357.20$1,357.20-148 ft-
