Dren KTrain 1HP Hot and Cold Chiller
#1 in Over 1/2 HPFull review
A quiet 1 HP hot and cold chiller, if you can live without a stated warranty.
Amazon $1,199$1,199
The Dren KTrain 1HP Hot and Cold Chiller is the better cold plunge chiller overall, rated 3.9 to 3.8. The Dren KTrain 1HP Hot and Cold Chiller costs $100 less ($1,199 vs $1,299).
TURBRO FrostCore F85
#2 in Over 1/2 HPFull review
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 $1,299$1,299
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.
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 | Dren KTrain 1HP Hot and Cold Chiller | TURBRO FrostCore F85 |
|---|---|---|
| Overall rating | 3.9/5 | 3.8/5 |
| Value 30% | 65 $1,199 per HP ($1,199, 1 HP) | 62 $1,299 per HP ($1,299, 1 HP) |
| Coldest 15% | 50 lowest temperature not published (neutral score used) | 100 down to 36 °F |
| Sanitation 10% | 85 filter and ozone | 85 filter and ozone |
| Heating 10% | 100 heats as well | 50 heating not stated (neutral score used) |
| Noise 10% | 95 46 dBA | 50 noise rating not published (neutral score used) |
| Warranty 25% | 50 warranty not published (neutral score used) | 50 warranty not published (neutral score used) |
Specifications
| Dren KTrain 1HP Hot and Cold Chiller | TURBRO FrostCore F85 | |
|---|---|---|
| Cooling | ||
| Compressor | 1 HP | 1 HP |
| Cooling capacity | 9,212 Btu/h | 9,553 Btu/h |
| Lowest temperature | - | 36 °F |
| Heats | Yes | - |
| Largest tub | - | 132 gal |
| Pump flow | - | 3.5 gpm |
| Refrigerant | - | R32 |
| Water and build | ||
| Filter | Yes | Yes |
| Sanitizer | Ozone | Ozone |
| App or wifi | Yes | Yes |
| Voltage | - | 120 V |
| Noise | 46 dBA | - |