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
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.
- 25 gpmFlow
- 150 ft (65 psi)Head
- Variable speedDrive
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
- Holds a set pressure from 22 to 80 psi, so flow stays steady as taps open
- Pressure tank and outlet check valve are built in, so it installs as one unit
- Stops itself on running dry, overheating, blockage or a pipe leak
- Handles water up to 175 F, so it can sit on a hot line
- No warranty term in the listing
- Costs well over twice what similar generic inverter boosters sell for
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its drive. How we rank explains each one.
Specifications
| Model number | Smart 45 |
|---|---|
| Pumping | |
| Drive | Variable speed |
| Maximum flow | 25 gpm |
| Maximum head | 150 ft (65 psi) |
| Input power | 550 W |
| Protection and build | |
| Built-in tank | Yes |
| Dry-run protection | Yes |
| Overheat protection | Yes |
| Voltage | 120 V |
| Noise | 55 dBA |
Alternatives in this drive
An inline inverter booster with a stainless shell for tight spaces. The cheaper H600 PRO from the same maker outpumps it.
Amazon $399.99A 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 $1,547Compare
Compare the Aquastrong Smart 45 with any other water pressure booster pump →
More from Aquastrong: every Aquastrong product ranked.