A cold-reaching 1/2 HP unit with app control for a covered patio tub. Add your own filter.
Amazon $699.99The Beyond Marina 1/2 HP WiFi Chiller is the better cold plunge chiller overall, rated 3.2 to 2.8. The Beyond Marina 1/2 HP WiFi Chiller costs $118 less ($699.99 vs $817.99).
A plain, proven chiller for someone happy to plumb their own pump and filter. Most buyers will find an all-in-one kit easier.
Amazon $817.99Prices 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 up to 1/2 HP cold plunge chiller; a clear win is highlighted. How we rank explains each one.
| Factor weight | Beyond Marina 1/2 HP WiFi Chiller | Active Aqua Chiller with Boost 1/2 HP |
|---|---|---|
| Overall rating | 3.2/5 | 2.8/5 |
| Value 30% | 59 $1,400 per HP ($699.99, 1/2 HP) | 52 $1,636 per HP ($817.99, 1/2 HP) |
| Coldest 15% | 95 down to 37.4 °F | 50 lowest temperature not published (neutral score used) |
| Sanitation 10% | 50 filter and sanitizer not stated (neutral score used) | 50 filter and sanitizer not stated (neutral score used) |
| Heating 10% | 50 heating not stated (neutral score used) | 50 heating not stated (neutral score used) |
| Noise 10% | 80 49 dBA | 50 noise rating not published (neutral score used) |
| Warranty 25% | 0 1-year warranty | 0 1-year warranty |
Specifications
| Beyond Marina 1/2 HP WiFi Chiller | Active Aqua Chiller with Boost 1/2 HP | |
|---|---|---|
| Cooling | ||
| Compressor | 1/2 HP | 1/2 HP |
| Cooling capacity | 4,094 Btu/h | - |
| Lowest temperature | 37.4 °F | - |
| Largest tub | 250 gal | 172 gal |
| Water and build | ||
| App or wifi | Yes | - |
| Noise | 49 dBA | - |
| Warranty | 1 year | 1 year |
