Fox Plunge 1HP Cold Plunge Chiller
#2 in Over 1/2 HPFull review
A low-priced 1 HP chiller for a big tub, without the sanitizer or app of pricier units.
Amazon $669.95$669.95
The Fox Plunge 1HP Cold Plunge Chiller is the better cold plunge chiller overall, rated 3.4 to 3.0. The Fox Plunge 1HP Cold Plunge Chiller leads on value. The Fox Plunge 1HP Cold Plunge Chiller costs $489.05 less ($669.95 vs $1,159).
Active Aqua Chiller with Boost 1 HP
#10 in Over 1/2 HPFull review
A bare 1 HP chiller for a DIY build with your own pump and filter.
Amazon $1,159$1,159
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 Fox Plunge 1HP Cold Plunge Chiller for value ($670 per HP ($669.95, 1 HP) vs $1,159 per HP ($1,159, 1 HP)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every over 1/2 HP cold plunge chiller; a clear win is highlighted. How we rank explains each one.
| Factor weight | Fox Plunge 1HP Cold Plunge Chiller | Active Aqua Chiller with Boost 1 HP |
|---|---|---|
| Overall rating | 3.4/5 | 3.0/5 |
| Value 30% | 88 $670 per HP ($669.95, 1 HP) | 66 $1,159 per HP ($1,159, 1 HP) |
| Coldest 15% | 75 down to 39 °F | 50 lowest temperature not published (neutral score used) |
| Sanitation 10% | 50 filter | 50 filter and sanitizer not stated (neutral score used) |
| Heating 10% | 50 heating not stated (neutral score used) | 50 heating not stated (neutral score used) |
| Noise 10% | 75 50 dBA | 50 noise rating not published (neutral score used) |
| Warranty 25% | 0 1-year warranty | 0 1-year warranty |
Specifications
| Fox Plunge 1HP Cold Plunge Chiller | Active Aqua Chiller with Boost 1 HP | |
|---|---|---|
| Cooling | ||
| Compressor | 1 HP | 1 HP |
| Lowest temperature | 39 °F | - |
| Water and build | ||
| Filter | Yes | - |
| Voltage | 120 V | - |
| Noise | 50 dBA | - |
| Warranty | 1 year | 1 year |