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
3.4/5
A low-priced 1 HP chiller for a big tub, without the sanitizer or app of pricier units.
- 1 HPSize
- 39 °FColdest
Check price at Amazon$669.95
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- 1 HP for under $700
- Reusable filters, no cartridges to buy
- Quiet, 50 dB or less at 1 m claimed
Cons
- No ozone, UV or app
- Cooling capacity not published
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
Specifications
| Model number | FOX-GS900-1 |
|---|---|
| Cooling | |
| Compressor | 1 HP |
| Lowest temperature | 39 °F |
| Water and build | |
| Filter | Yes |
| Voltage | 120 V |
| Noise | 50 dBA |
| Warranty | 1 year |
Alternatives in this size
ALEKO 1 HP Chiller and Heater
#5 in Over 1/2 HPFull review
A hot and cold unit with ozone and wifi, but cheaper chillers publish more and promise as much.
Amazon $2,699$2,699
PlungeFit 1 HP Cold Plunge Chiller
#7 in Over 1/2 HPFull review
A no-frills 1 HP kit that fits almost any tub, including a home bathtub.
Amazon $829$829
Compare
Compare the Fox Plunge 1HP Cold Plunge Chiller with any other cold plunge chiller →
More from Fox Plunge: every Fox Plunge product ranked.