AS ColdPlunge Ice Bath Water Chiller, 1/3 HP Upgraded Cold Plunge Chiller with External Filter Water Pump, 110V Cooling Chiller Review (2026)

What it is

This is a 1/3 HP water chiller built to cool a home cold plunge tub, sold as an upgraded version of AS ColdPlunge's chiller line with an external filter and water pump included rather than sold separately. It runs on a standard 110V household outlet, so it does not need special electrical work to install in most homes. Chillers in this power class are generally built for smaller to mid-size home tubs rather than large multi-person or commercial pools, and related listings from the same product line describe cooling water to a consistent temperature in the low 40s Fahrenheit for tubs up to roughly the 80 gallon range, though the exact capacity a specific tub can be chilled to depends on tub size, ambient temperature, and insulation. The external filter and pump are meant to circulate and clean the water at the same time it is being cooled, rather than requiring a separate filtration system.

Setup and daily use

Installation follows the typical pattern for a plug-in cold plunge chiller: connect the insulated hoses between the chiller and the tub, place the pump so it can draw and return water, plug into a 110V outlet, and set a target temperature on the unit. Once running, the chiller cycles on and off to hold the water at the set point rather than needing ice added manually, which is the main daily convenience over a manual ice-and-tub setup. The external filter is meant to be checked and cleaned periodically as part of normal upkeep, similar to a small pool or hot tub filter, since it is handling continuous water circulation rather than a one-time fill. Because the hoses and fittings need to match the tub's ports, first-time setup with a tub from a different brand may require checking hose diameter and connector type before assuming a smooth fit.

Who it suits

This chiller suits people who already use a cold plunge tub regularly enough that buying and hauling ice has become a real ongoing cost or hassle, since a chiller removes that step entirely once installed. It fits typical home tub sizes rather than large group or commercial pools, so it is a reasonable match for a single tub used by one person or a household rather than a shared facility. The 110V plug-in design also suits anyone who wants to avoid an electrician visit or special wiring, since it is meant to work with a standard household circuit. People with larger tubs, very hot climates, or who need to bring water down from warm to cold quickly and repeatedly in the same day may find a 1/3 HP unit works more slowly than they would like.

Where it falls short

A 1/3 HP chiller is on the smaller end of the cold plunge chiller market, and it will take noticeably longer to pull a large tub down to target temperature on a hot day compared to a 1 HP or larger unit, so buyers with bigger tubs or hotter climates should think about whether a stronger chiller is worth the added cost. Compatibility is not universal, since the included hoses and fittings need to match the specific tub being used, and a tub from a different brand or a DIY tub may need adapters or modification before the chiller connects cleanly. As with any water chiller running continuously, ongoing filter maintenance and occasional water changes are still part of the routine even with filtration built in, rather than a fully hands-off system.

Bottom line for recovery routines

For someone who has decided a manual ice-and-tub routine is no longer sustainable, this chiller offers a straightforward, plug-in way to keep a home tub consistently cold without an electrician or a large, high-powered unit. The included external filter is a genuine convenience over chillers that only handle temperature and leave filtration as a separate purchase. Buyers should confirm their tub's hose fittings and expected water volume against this chiller's rated capacity before buying, and set expectations that a 1/3 HP unit will cool more gradually than larger chillers, especially in warm weather or with bigger tubs.

Frequently asked questions