Water Chillers
Water chillers cool your cold plunge and hold it at a set temperature, so daily plunges don't depend on bags of ice. They circulate the water continuously, and many setups pair with a filter to keep it clean.
Size the chiller to your tub's water volume and your target temperature, and confirm its power needs. See cold plunge tubs or cold plunge accessories.
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Up to 37% offVendor:Dynamic Cold TherapyDynamic Standard Water Chiller
123 in stockSale price From $3,299.00 USD Regular price$4,371.00 USD -
New ArrivalUp to 43% offVendor:Dynamic Cold TherapyDynamic Premier Edition Water Chiller
122 in stockSale price From $3,499.00 USD Regular price$4,127.00 USD -
Compare popular Water Chillers
Key specs side by side for our most popular models.
| Specs | |||
|---|---|---|---|
| Best For | Any plunge tub, budget-friendly | Faster cooling + premium build | Standalone chiller (any tub) |
| Compressor Power | 0.8 / 1.0 HP | 0.8 / 1.0 HP | 0.85 kW avg (2.49 kW cool) |
| Temperature Range | 37–85°F (cool + heat) | 37–85°F (cool + heat) | 37–107°F (cool + heat) |
| Cooling Rate per 30 min | 1–3°F | 1–3°F (20 min on 1.0 HP) | Continuous filtration |
| Max Water Volume | Up to 135 gal | Up to 135 gal | Compatible with most tubs |
| Water Circulation | Built-in self-priming pump | Built-in self-priming pump | Integrated pump |
| Filtration | 20-micron × 2 stages | 20-micron × 2 stages | 40-micron pre-filter + continuous |
| Sanitation | Ozone auto-sanitation | Ozone auto-sanitation | Built-in |
| WiFi / App Control | ✓ | ✓ | ✓ |
| Dimensions L × W × H | 14–15 × 19–21 × 22 in | 20–21 × 13–14 × 18–21 in | 24.2 × 13.1 × 18.9 in |
| Unit Weight | 85–89 lb | 62–78 lb | 66 lb |
| Outdoor Rated | ✓ | ✓ | ✓ |
| Warranty | Manufacturer | Manufacturer | 2 year (4 yr upgrade) |
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Frequently asked questions
What does a water chiller do?
A water chiller is a refrigeration unit that cools and circulates water through your cold plunge tub, maintaining a set target temperature. Most include integrated filtration and sanitation. Without a chiller, cold plunge water warms up to ambient temperature within hours — a chiller is what makes on-demand cold plunging possible.
What size chiller do I need?
Chiller capacity is measured in BTU/hr or horsepower. Rough guide based on tub volume and target temperature: under 100 gallons chilled to 50°F needs a 1/3–1/2 HP chiller (roughly 4,000–6,000 BTU/hr); 100–200 gallons at 40°F needs 1 HP (10,000+ BTU/hr). Larger or colder targets need proportionally bigger chillers.
How cold can a chiller get the water?
Most residential chillers reach 37–45°F (3–7°C) reliably. Below that, performance depends on ambient temperature, tub insulation, and chiller size. Commercial chillers can hit 32°F (0°C). Very cold targets require oversized chillers running nearly continuously — plan for higher energy costs.
How much electricity does a chiller use?
Expect $30–80 per month in electricity for regular home use, depending on target temperature, ambient conditions, and usage frequency. Colder targets and hotter climates push costs higher. Well-insulated tubs reduce chiller runtime and save significantly on operating costs.
Do chillers include filtration?
Most quality cold plunge chillers include integrated filtration (cartridge or sediment filter) and sanitation (typically ozone or UV) in the same unit. Separate pump-filter-chiller systems exist for larger commercial installs. All-in-one units are simpler to install and maintain for home use.
Not sure which one fits your space?
Talk to our equipment specialists about fit, power needs and delivery before you buy, or plan it yourself with our free tools and calculators.
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