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 $1,547The DAB Esybox Mini3 rates 3.4 among variable speed water pressure booster pumps; the Davey BT20-30 Torrium2 rates 3.3 among fixed speed ones. The Davey BT20-30 Torrium2 costs $305 less ($1,242 vs $1,547).

The middle of the BT range for a family house on a weak supply that runs several fixtures at once.
Amazon $1,242Prices 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.
Scores side by side
These two sit in different drive classes (variable speed and fixed speed), and each is scored against the reference points for its own class, so a rating says how well each does among its own drive peers. How we rank explains each factor.
| Factor weight | DAB Esybox Mini3 | Davey BT20-30 Torrium2 |
|---|---|---|
| Overall rating | 3.4/5 | 3.3/5 |
| Value 30% | 0 $73.32 per gpm ($1,547, 21.1 gpm) | 0 $62.10 per gpm ($1,242, 20 gpm) |
| Flow 15% | 60 21.1 gpm maximum | 55 20 gpm maximum |
| Pressure 15% | 100 180 ft maximum head (about 78 psi) | 47 116 ft maximum head (about 50 psi) |
| Protection 10% | 100 dry-run and overheat protection | 100 dry-run and overheat protection |
| Noise 10% | 100 45 dBA | 50 noise rating not published (neutral score used) |
| Warranty 20% | 50 warranty not published (neutral score used) | 100 3-year warranty |
Specifications
| DAB Esybox Mini3 | Davey BT20-30 Torrium2 | |
|---|---|---|
| Pumping | ||
| Drive | Variable speed | Fixed speed |
| Maximum flow | 21.1 gpm | 20 gpm |
| Maximum head | 180 ft (78 psi) | 116 ft (50 psi) |
| Motor | 1.1 HP | 1.1 HP |
| Input power | 850 W | 980 W |
| Ports | - | 1.2 in |
| Protection and build | ||
| Built-in tank | Yes | No |
| Dry-run protection | Yes | Yes |
| Overheat protection | Yes | Yes |
| Voltage | - | 120 V |
| Noise | 45 dBA | - |
| Weight | 32 lb | 27.3 lb |
| Warranty | - | 3 years |