GRAT 1.5HP Cold Plunge Chiller
#4 in Over 1/2 HPFull review
The cheapest way here to a big cooling number, for large tubs in warm places.
Amazon $799$799
The GRAT 1.5HP Cold Plunge Chiller is the better cold plunge chiller overall, rated 3.6 to 3.4. The GRAT 1.5HP Cold Plunge Chiller leads on value. The GRAT 1.5HP Cold Plunge Chiller costs $1,201 less ($799 vs $2,000).
X-Vitalis 1.5HP Cold Plunge Chiller
#8 in Over 1/2 HPFull review
A heavy 1.5 HP hot and cold unit, but at this price the listing leaves too much unsaid.
Amazon $2,000$2,000
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 GRAT 1.5HP Cold Plunge Chiller for value ($533 per HP ($799, 1 1/2 HP) vs $1,333 per HP ($2,000, 1 1/2 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 | GRAT 1.5HP Cold Plunge Chiller | X-Vitalis 1.5HP Cold Plunge Chiller |
|---|---|---|
| Overall rating | 3.6/5 | 3.4/5 |
| Value 30% | 97 $533 per HP ($799, 1 1/2 HP) | 61 $1,333 per HP ($2,000, 1 1/2 HP) |
| Coldest 15% | 100 down to 36 °F | 50 lowest temperature not published (neutral score used) |
| Sanitation 10% | 50 filter | 50 filter |
| Heating 10% | 50 heating not stated (neutral score used) | 100 heats as well |
| Noise 10% | 50 noise rating not published (neutral score used) | 0 65 dBA |
| Warranty 25% | 0 1-year warranty | 50 warranty not published (neutral score used) |
Specifications
| GRAT 1.5HP Cold Plunge Chiller | X-Vitalis 1.5HP Cold Plunge Chiller | |
|---|---|---|
| Cooling | ||
| Compressor | 1 1/2 HP | 1 1/2 HP |
| Cooling capacity | 10,500 Btu/h | 9,000 Btu/h |
| Lowest temperature | 36 °F | - |
| Heats | - | Yes |
| Pump flow | - | 10.6 gpm |
| Water and build | ||
| Filter | Yes | Yes |
| App or wifi | Yes | Yes |
| Noise | - | 65 dBA |
| Warranty | 1 year | - |