Cold Plunge Chiller 1HP, Upgraded Filtration System 4-Layer Purification, Ice Bath Chiller & Heater, WiFi Control, Ozone System Review (2026)

Who this chiller suits

This chiller is aimed at buyers who have outgrown small 1/3HP units or bagged ice, particularly anyone running a larger tub, living in a warm climate, or using their cold plunge often enough that cooling speed and water cleanliness both matter. The built in heater means the same tub can double for warm soaks, which suits households that want one piece of equipment covering both cold therapy and relaxed warm bathing rather than buying separate gear. The 4-layer filtration and ozone system are aimed at anyone concerned about water staying clean across repeat sessions without draining and refilling constantly. Buyers with a small single person tub and infrequent use, where a compact 1/3HP chiller already cools fast enough, may find this unit more capacity and cost than they need.

What the specs mean day to day

Rated at 1HP, the chiller can cool roughly 132 gallons of water at about 6°F per hour, noticeably faster than smaller 1/3HP units on larger tub volumes, with a stated temperature range of about 37°F to 107°F covering both cold plunge and heated soak use. It runs on R410A refrigerant with automatic thermostat control and operates at a low 45 decibel noise level, quiet enough for indoor placement. Filtration combines dual stainless steel cartridges for hair and debris, a micron grade PP filter with an outer stainless mesh for pre-filtration, and an ozone system to help neutralize contaminants between full water changes. WiFi control through a companion app lets you set temperature and schedule sessions remotely, and an LED panel warns when water flow drops below 14 liters per minute.

Living with it

Setup means connecting the chiller to your tub's plumbing, downloading the companion app and pairing it over 2.4G WiFi, then setting your target temperature and any scheduled run times so the tub is ready when you want it. Because this is a 1HP unit, expect it to draw more power and run somewhat louder than a small 1/3HP chiller, even at its rated 45 decibels, so plan placement accordingly if noise near a bedroom matters. Ongoing care follows a clear schedule: clean the stainless steel filters roughly every four weeks and replace or clean the PP cartridge about every three weeks, watching the LED flow warning as a sign that filters need attention sooner. The ozone system runs automatically alongside filtration to help extend time between full water changes.

Trade-offs and how it compares with rivals

Ranked first of eight chillers in this guide, this 1HP unit is a clear step up in cooling power and features over the 1/3HP models from AS ColdPlunge, Fox Plunge and similar brands ranked below it, most of which rely on an external filter and pump rather than the more thorough 4-layer filtration and ozone combination here. That extra capability comes with the trade-offs the site's own cons list: a WiFi setup step that depends on a solid home network, plus higher power draw and more noise than the smaller units. Buyers mainly comparing on price alone will find the 1/3HP chillers noticeably cheaper, but they cool slower and lack the built in heater and ozone system this unit includes.

Verdict

For anyone running a larger tub, a warm climate setup, or wanting heater and ozone filtration in one unit, this 1HP chiller is the strongest all around option in its guide, earning our score of 8.7 out of 10 on features and cooling capacity. The WiFi dependency, added noise and higher power draw are real considerations worth planning around rather than dealbreakers for most buyers. Anyone with a small tub, light use and a tighter budget should compare it against the 1/3HP chillers ranked below it in this guide, which cool smaller volumes adequately at a lower cost and power draw.

Frequently asked questions