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 3.2. The Dren KTrain 1HP Hot and Cold Chiller leads on value. The Dren KTrain 1HP Hot and Cold Chiller costs $1,425.25 less ($1,199 vs $2,624.25).
SaunaSpa Gale 1 HP Chiller and Heater
#9 in Over 1/2 HPFull review
A powerful hot and cold unit for a large tub, with ozone and app control. The short warranty in the manual is the catch.
SaunaSpa $2,624.25$2,624.25
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 Dren KTrain 1HP Hot and Cold Chiller for value ($1,199 per HP ($1,199, 1 HP) vs $2,624 per HP ($2,624.25, 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 | Dren KTrain 1HP Hot and Cold Chiller | SaunaSpa Gale 1 HP Chiller and Heater |
|---|---|---|
| Overall rating | 3.9/5 | 3.2/5 |
| Value 30% | 65 $1,199 per HP ($1,199, 1 HP) | 33 $2,624 per HP ($2,624.25, 1 HP) |
| Coldest 15% | 50 lowest temperature not published (neutral score used) | 100 down to 37 °F |
| Sanitation 10% | 85 filter and ozone | 85 filter and ozone |
| Heating 10% | 100 heats as well | 100 heats to 104 °F |
| Noise 10% | 95 46 dBA | 50 noise rating not published (neutral score used) |
| Warranty 25% | 50 warranty not published (neutral score used) | 0 1-year warranty |
Specifications
| Dren KTrain 1HP Hot and Cold Chiller | SaunaSpa Gale 1 HP Chiller and Heater | |
|---|---|---|
| Cooling | ||
| Compressor | 1 HP | 1 HP |
| Cooling capacity | 9,212 Btu/h | 10,407 Btu/h |
| Lowest temperature | - | 37 °F |
| Heats | Yes | Yes |
| Highest temperature | - | 104 °F |
| Refrigerant | - | R32 |
| Water and build | ||
| Filter | Yes | Yes |
| Sanitizer | Ozone | Ozone |
| App or wifi | Yes | Yes |
| Voltage | - | 120 V |
| Noise | 46 dBA | - |
| Warranty | - | 1 year |