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
The PlungeFit 1 HP Cold Plunge Chiller is the better cold plunge chiller overall, rated 3.4 to 2.5. The PlungeFit 1 HP Cold Plunge Chiller leads on value. The Plunge Pro Chiller wins on sanitation. The PlungeFit 1 HP Cold Plunge Chiller costs $3,161 less ($829 vs $3,990).
Plunge Pro Chiller
#12 in Over 1/2 HPFull review
An upgrade or replacement chiller for owners of Plunge tubs who want app control and ozone. Buyers with other tubs pay a lot for the name.
Plunge $3,990$3,990
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 PlungeFit 1 HP Cold Plunge Chiller for value ($829 per HP ($829, 1 HP) vs $5,320 per HP ($3,990, 3/4 HP)).
- Choose the Plunge Pro Chiller for sanitation (filter and ozone vs filter).
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 | PlungeFit 1 HP Cold Plunge Chiller | Plunge Pro Chiller |
|---|---|---|
| Overall rating | 3.4/5 | 2.5/5 |
| Value 30% | 80 $829 per HP ($829, 1 HP) | 5 $5,320 per HP ($3,990, 3/4 HP) |
| Coldest 15% | 100 down to 37 °F | 100 down to 37 °F |
| Sanitation 10% | 50 filter | 85 filter and ozone |
| Heating 10% | 50 heating not stated (neutral score used) | 0 cools only |
| Noise 10% | 50 noise rating not published (neutral score used) | 50 noise rating not published (neutral score used) |
| Warranty 25% | 0 1-year warranty | 0 warranty not published, scored as none |
Specifications
| PlungeFit 1 HP Cold Plunge Chiller | Plunge Pro Chiller | |
|---|---|---|
| Cooling | ||
| Compressor | 1 HP | 3/4 HP |
| Lowest temperature | 37 °F | 37 °F |
| Heats | - | No |
| Largest tub | 230 gal | - |
| Water and build | ||
| Filter | Yes | Yes |
| Sanitizer | - | Ozone |
| App or wifi | - | Yes |
| Warranty | 1 year | - |