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 and the PlungeFit 1 HP Cold Plunge Chiller are evenly matched, rated 3.4 and 3.4. The Fox Plunge 1HP Cold Plunge Chiller leads on value. The PlungeFit 1 HP Cold Plunge Chiller wins on coldest. The Fox Plunge 1HP Cold Plunge Chiller costs $159.05 less ($669.95 vs $829).
PlungeFit 1 HP Cold Plunge Chiller
#4 in Over 1/2 HPFull review
A no-frills 1 HP kit that fits almost any tub, including a home bathtub.
Amazon $829$829
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 $829 per HP ($829, 1 HP)).
- Choose the PlungeFit 1 HP Cold Plunge Chiller for coldest (down to 37 °F vs down to 39 °F).
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 | PlungeFit 1 HP Cold Plunge Chiller |
|---|---|---|
| Overall rating | 3.4/5 | 3.4/5 |
| Value 30% | 88 $670 per HP ($669.95, 1 HP) | 80 $829 per HP ($829, 1 HP) |
| Coldest 15% | 75 down to 39 °F | 100 down to 37 °F |
| Sanitation 10% | 50 filter | 50 filter |
| 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 | PlungeFit 1 HP Cold Plunge Chiller | |
|---|---|---|
| Cooling | ||
| Compressor | 1 HP | 1 HP |
| Lowest temperature | 39 °F | 37 °F |
| Largest tub | - | 230 gal |
| Water and build | ||
| Filter | Yes | Yes |
| Voltage | 120 V | - |
| Noise | 50 dBA | - |
| Warranty | 1 year | 1 year |