DAB Esybox Mini3
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$1,547
The DAB Esybox Mini3 is the better water pressure booster pump overall, rated 3.4 to 3.0. The DAB Esybox Mini3 leads on pressure. The Grundfos SCALA2 3-45 115V costs $668 less ($879 vs $1,547).
Grundfos SCALA2 3-45 115V
#12 in Variable speedFull 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
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.
Which should you buy?
- Choose the DAB Esybox Mini3 for pressure (180 ft maximum head (about 78 psi) vs 148 ft maximum head (about 64 psi)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every variable speed water pressure booster pump; a clear win is highlighted. How we rank explains each one.
| Factor weight | DAB Esybox Mini3 | Grundfos SCALA2 3-45 115V |
|---|---|---|
| Overall rating | 3.4/5 | 3.0/5 |
| Value 30% | 0 $73.32 per gpm ($1,547, 21.1 gpm) | 0 $66.59 per gpm ($879, 13.2 gpm rated; maximum not published) |
| Flow 15% | 60 21.1 gpm maximum | 24 13.2 gpm rated; maximum not published |
| Pressure 15% | 100 180 ft maximum head (about 78 psi) | 73 148 ft maximum head (about 64 psi) |
| Protection 10% | 100 dry-run and overheat protection | 100 dry-run and overheat protection |
| Noise 10% | 100 45 dBA | 92 47 dBA |
| Warranty 20% | 50 warranty not published (neutral score used) | 50 2-year warranty |
Specifications
| DAB Esybox Mini3 | Grundfos SCALA2 3-45 115V | |
|---|---|---|
| Pumping | ||
| Drive | Variable speed | Variable speed |
| Maximum flow | 21.1 gpm | - |
| Maximum head | 180 ft (78 psi) | 148 ft (64 psi) |
| Highest inlet pressure | - | 87 psi |
| Motor | 1.1 HP | - |
| Input power | 850 W | 560 W |
| Ports | - | 1 in |
| Protection and build | ||
| Built-in tank | Yes | Yes |
| Dry-run protection | Yes | Yes |
| Overheat protection | Yes | Yes |
| Outdoor rated | - | Yes |
| Voltage | - | 120 V |
| Noise | 45 dBA | 47 dBA |
| Weight | 32 lb | 22 lb |
| Warranty | - | 2 years |