DAB E.SYBOX 230V
#11 in Variable speedFull 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$2,300
The DAB E.SYBOX 230V is the better water pressure booster pump overall, rated 3.2 to 3.0. The DAB E.SYBOX 230V leads on pressure. The Grundfos SCALA2 3-45 230V costs $942.80 less ($1,357.20 vs $2,300).
Grundfos SCALA2 3-45 230V
#13 in Variable speedFull 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
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 E.SYBOX 230V for pressure (210 ft maximum head (about 91 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 E.SYBOX 230V | Grundfos SCALA2 3-45 230V |
|---|---|---|
| Overall rating | 3.2/5 | 3.0/5 |
| Value 30% | 0 $71.88 per gpm ($2,300, 32 gpm) | 0 $102.82 per gpm ($1,357.20, 13.2 gpm rated; maximum not published) |
| Flow 15% | 100 32 gpm maximum | 24 13.2 gpm rated; maximum not published |
| Pressure 15% | 100 210 ft maximum head (about 91 psi) | 73 148 ft maximum head (about 64 psi) |
| Protection 10% | 50 protection not stated (neutral score used) | 100 dry-run and overheat protection |
| Noise 10% | 50 noise rating not published (neutral score used) | 92 47 dBA |
| Warranty 20% | 50 warranty not published (neutral score used) | 50 2-year warranty |
Specifications
| DAB E.SYBOX 230V | Grundfos SCALA2 3-45 230V | |
|---|---|---|
| Pumping | ||
| Drive | Variable speed | Variable speed |
| Maximum flow | 32 gpm | - |
| Maximum head | 210 ft (91 psi) | 148 ft (64 psi) |
| Highest inlet pressure | - | 87 psi |
| Input power | - | 550 W |
| Ports | - | 1 in |
| Protection and build | ||
| Built-in tank | - | Yes |
| Dry-run protection | - | Yes |
| Overheat protection | - | Yes |
| Outdoor rated | - | Yes |
| Voltage | 240 V | 240 V |
| Noise | - | 47 dBA |
| Weight | 57 lb | 22 lb |
| Warranty | - | 2 years |