Turn Any Existing Bathtub Into A Cold Plunge.
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Turn Any Existing Bathtub Into A Cold Plunge. The H3 is the premium HomePlunge model that cools the average standing tub at a rate of 20-30F per hour. For most, this means your cold plunge bath tub is ready before you finish your morning coffee. Portable and no physical connections aka plumbing. HomePlunge sets up in seconds and stows away when not in use. Schedule in advance with the smart app and never worry about keeping your water clean. Simply drain your tub when it's time.
Electrical
110VAC/60Hz/9A
Time to cool
20°-30°F per hour
Lower Limit
34F
Dimensions
18.5"x16.5"x20.5"
Power
1 HP
Sound
60-75 dB
1 hour a day for most users. The H3 is the fastest chiller on the market cooling an average size standing tub at a rate of 20F-30F per hour starting from 65F-80F. To cold plunge at extreme temps (30-40s), it can take 2-3 hours.
No. Follow best practices by keeping the vent fan on and door open. The system only runs for 1 hour a day for most.
The secret sauce is the hose-arm. It conceals an inlet and outlet water tube inside, quick-connects to the top of the chiller on one end, and the other end bends over the tub to dip into the water. The pump inside the chiller draws the bath water out, cools it, and send it back cold. No plumbing, minimal setup, and the reusable filter means minimal maintenance.
HomePlunge is designed to be used with your existing home bathtub unlike an outdoor permanent installation.
Patented and award-winning. The inlet and outlet water hoses are concealed in a bend-and-stay insulated arm.
The hose-arm CLICKS into the top of the chiller. No fasteners, no plumbing. Press the button to release and stow away.
Put the hose-arm into the tub water. Set your temperature. Come back after your coffee and cold plunge.
"This heals my lower back, my knees, my hips, all the issues I've had from over 3 decades of wrestling." - Stevie Richards
Reduces inflammation and soreness for faster post-workout recovery.
Eases chronic aches and joint discomfort through powerful vasoconstriction.
Boosts endorphins and dopamine for a natural mood lift and reduced anxiety.
Improves sleep and immunity by lowering stress hormones.
UFC Fighter, Ryan Loder, recovers from fight training.
Meet Ceci, former Golden State Warriors Dancer and current Athletic Trainer at Equinox.
Real Customer, Brad Hunter.
First HomePlunge at 39 degrees after cycling in the Marin Highlands.
Rashid, Athletic Trainer at Equinox.
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HomePlunge
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The Plunge™ | Ice Barrel™ | DIY Ice Bath | |
|---|---|---|---|---|
| Fits Any Bathtub | ||||
| No Ice Required | ||||
| Precise Temperature Control | ||||
| Portability | ||||
| Low Maintenance | ||||
| Upkeep fees |
Based on a selection of products in the cold plunge market. The Plunge™ and Ice Barrel™ are trademarks of their respective owners. HomePlunge is not affiliated with these brands. Information accurate as of December 2025.
HomePlunge rolls up to the edge of your bathtub and the hose-arm dips into the water. The chiller's internal pump will draw the bath water out, chill it to your set temp, and cycle the chilled water back into the tub.
30 minutes to 1 hour for most users.
Scheduling is a great way to plan ahead and can be done with the Tuya Smart Home app.
Unlike the other cold plunges that need to run 24/7, HomePlunge only runs 1-2 hours a day. Turn it off when you're done cold plunging and come back the next day.
Rest assured, condensation regularly occurs with every day hot shower and bathtub use with the temperature delta between hot water and ambient air. HomePlunge is no different. Mold is prevented from having air flow in the bathroom. Best practices include keeping the door open and running the exhaust fan during use to maximize air flow.
One year manufacturer's warranty. Additional 1, 2, and 3 year options available.
Use Shop Pay at checkout to see your available finance options.
Yes. 110V 15A standard electrical outlet.
No. HomePlunge is 100% modular and does not require any installation. Set up takes literal seconds.
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