A strong 1 HP pick for a big tub or a hot climate, with ozone and app control included. Check the warranty with the seller before buying.
Amazon $1,299The TURBRO FrostCore F85 is the better cold plunge chiller overall, rated 3.8 to 3.6. The TURBRO FrostCore F85 leads on sanitation. The GRAT 1.5HP Cold Plunge Chiller wins on value. The GRAT 1.5HP Cold Plunge Chiller costs $500 less ($799 vs $1,299).
The cheapest way here to a big cooling number, for large tubs in warm places.
Amazon $799Prices 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 TURBRO FrostCore F85 for sanitation (filter and ozone vs filter).
- Choose the GRAT 1.5HP Cold Plunge Chiller for value ($533 per HP ($799, 1 1/2 HP) vs $1,299 per HP ($1,299, 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 | TURBRO FrostCore F85 | GRAT 1.5HP Cold Plunge Chiller |
|---|---|---|
| Overall rating | 3.8/5 | 3.6/5 |
| Value 30% | 62 $1,299 per HP ($1,299, 1 HP) | 97 $533 per HP ($799, 1 1/2 HP) |
| Coldest 15% | 100 down to 36 °F | 100 down to 36 °F |
| Sanitation 10% | 85 filter and ozone | 50 filter |
| Heating 10% | 50 heating not stated (neutral score used) | 50 heating not stated (neutral score used) |
| Noise 10% | 50 noise rating not published (neutral score used) | 50 noise rating not published (neutral score used) |
| Warranty 25% | 50 warranty not published (neutral score used) | 0 1-year warranty |
Specifications
| TURBRO FrostCore F85 | GRAT 1.5HP Cold Plunge Chiller | |
|---|---|---|
| Cooling | ||
| Compressor | 1 HP | 1 1/2 HP |
| Cooling capacity | 9,553 Btu/h | 10,500 Btu/h |
| Lowest temperature | 36 °F | 36 °F |
| Largest tub | 132 gal | - |
| Pump flow | 3.5 gpm | - |
| Refrigerant | R32 | - |
| Water and build | ||
| Filter | Yes | Yes |
| Sanitizer | Ozone | - |
| App or wifi | Yes | Yes |
| Voltage | 120 V | - |
| Warranty | - | 1 year |
