Up to 1/2 HP suits a one-person tub or barrel of about 100 gallons, kept indoors or in the shade. These run on a standard 120 V outlet and are the cheapest to buy and run, but take longer to pull warm water down and struggle in direct summer sun.
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.
Full ranking 15
- AQOVOR 1/3 HP Cold Plunge Chiller#1 of 15Full review
A budget chiller for a small tub indoors, where 42 F is cold enough.
Amazon $279.99$279.991/3 HP-42 °F - EONIX 1/2 HP Ice Bath Chiller#2 of 15Full review
A cheap 1/2 HP kit for a large inflatable tub where 42 F is enough.
Amazon $449.99$449.991/2 HP-42 °F - EONIX 1/3 HP Ice Bath Chiller#3 of 15Full review
A basic small chiller for a one-person tub of up to about 80 gallons.
Amazon $369.99$369.991/3 HP-42 °F - Healcryo 0.5 HP Ozone Chiller#4 of 15Full review
A low-cost way to keep a small one-person tub cold with ozone included.
Amazon $496.95$496.951/2 HP4,000 Btu/h38 °F - SereneLife 1/2 HP Chiller System#5 of 15Full review
A basic 1/2 HP kit with pump and filter. Others at this price add ozone and wifi.
Amazon $882.99$882.991/2 HP-39.2 °F - Fox Plunge 1/2HP Cold Plunge Chiller#6 of 15Full review
A cheap, quiet 1/2 HP kit for a large inflatable tub where 41 F is cold enough.
Amazon $449.95$449.951/2 HP-41 °F - The Pod Company Standard Chiller#7 of 15Full review
A simple small chiller for owners of Ice Pod tubs who want cold water without ice.
Amazon $569$5691/3 HP-41 °F - Beyond Marina 1/2 HP WiFi Chiller#8 of 15Full review
A cold-reaching 1/2 HP unit with app control for a covered patio tub. Add your own filter.
Amazon $699.99$699.991/2 HP4,094 Btu/h37.4 °F - Fox Plunge 1/3HP Ice Bath Chiller#9 of 15Full review
An entry-level chiller for a small one-person tub, best kept indoors.
Amazon $269.95$269.951/3 HP-42 °F - Poafamx 1/2 HP Ice Bath Chiller#10 of 15Full review
A plain 1/2 HP kit for tubs up to about 130 gallons.
Amazon $499.99$499.991/2 HP-40 °F - BAOSHISHAN 1/3 HP Cold Plunge Chiller#11 of 15Full review
A plain indoor chiller for a ported one-person tub.
Amazon $389$3891/3 HP-42 °F - AS ColdPlunge 1/3 HP Chiller#12 of 15Full review
A compact all-in-one small chiller for a one-person tub.
Amazon $399$3991/3 HP-42 °F - Active Aqua Chiller with Boost 1/2 HP#13 of 15Full review
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 $817.99$817.991/2 HP-- - Active Aqua Outdoor Cold Plunge Chiller Preorder#14 of 15Full 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$9991/3 HP-39 °F - Ice Barrel Chiller#15 of 15Full review
For Ice Barrel owners who want the matching app-controlled chiller. Anyone with another tub gets the same size compressor for far less elsewhere.
Ice Barrel $3,999.99$3,999.991/2 HP-37 °F
