BAOSHISHAN 1/3 HP Cold Plunge Chiller
#11 in Up to 1/2 HPFull review
A plain indoor chiller for a ported one-person tub.
Amazon $389$389
2.8/5
A plain, proven chiller for someone happy to plumb their own pump and filter. Most buyers will find an all-in-one kit easier.
- 1/2 HPSize
Check price at Amazon$817.99
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Titanium evaporator stands up to salts and chlorine
- Boost mode runs flat out to reach temperature faster
- A long-running grow-room chiller with parts widely available
Cons
- Needs a separate pump, hoses and filter
- No ozone, UV or app
- Cooling capacity and lowest temperature not on the listing
- One-year warranty
The Active Aqua Chiller with Boost family
Every Active Aqua Chiller with Boost model we rank, smallest first. Ratings compare each against its own size.
| Model | Size | Rating | Price |
|---|---|---|---|
| Active Aqua Chiller with Boost 1/2 HP (this one) | 1/2 HP | 2.8/5 | $817.99 |
| Active Aqua Chiller with Boost 1 HP | 1 HP | 3.0/5 | $1,159 |
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 | AACH50HP |
|---|---|
| Cooling | |
| Compressor | 1/2 HP |
| Largest tub | 172 gal |
| Water and build | |
| Warranty | 1 year |
Alternatives in this size
AS ColdPlunge 1/3 HP Chiller
#12 in Up to 1/2 HPFull review
A compact all-in-one small chiller for a one-person tub.
Amazon $399$399
Active Aqua Outdoor Cold Plunge Chiller Preorder
#14 in Up to 1/2 HPFull review
An outdoor-rated small chiller for a one-person tub in moderate heat. Its price is closer to 1 HP units from other makers.
Amazon $999$999
Compare
Compare the Active Aqua Chiller with Boost 1/2 HP with any other cold plunge chiller →
More from Active Aqua: every Active Aqua product ranked.