HomePlunge H3
CES Innovation Award winner. Maximum power, fastest chill times.
$3,499 $2,999 $500 off
0% APR · Free shipping · Free Bath Robe
Shop H3CES Innovation Award · TIME Best Inventions
Cold plunge,
any bathtub,
any home.
The award-winning chiller that turns the tub you already have into a 34°F plunge, ready in 45 to 60 minutes.
The Summer Sale
$500 off the H3 and Bella. Free Bath Robe with both.
US-Based Support
(707) 652-3892
Free Shipping
Included on every order
1 Year Warranty
Full coverage guarantee
0% APR
Or 36 month financing with Affirm
As Seen On
Engineered for the home
A chiller designed to disappear
into your bathroom.
01 · Fits any tub
Made for your bathtub.
No new plumbing. No dedicated basin. The H3 drops in beside the tub you already own.
02 · Ready in 45 to 60 min
Cold, on your schedule.
Set the temperature in the app. Come home to a plunge ready to go. Turn it off when you're done.
03 · Low maintenance
Runs 1–2 hours a day.
Unlike always-on plunges, the H3 only works when you need it. Lower bills. Less upkeep.
How does HomePlunge compare?
| Feature | HomePlunge | Plunge | Renu Therapy | Blue Cube |
|---|---|---|---|---|
| Price | $2,999 | $9,990 | $9,499 | $8,750 |
| You save | Our price | 70% | 68% | 66% |
| Chiller included | Yes | Yes | Yes | Yes |
| Uses the bathtub you own | Yes | No | No | No |
| Rolls away when not in use | Yes | No | No | No |
| Uses power (daily) | 1-2 hours | 24 hours | 24 hours | 24 hours |
| Never needs winterizing | Yes | No | No | Not stated |
| Feature | HomePlunge | Dedicated plunge tubs |
|---|---|---|
| Price | $2,999 | $8,750 to $9,990 |
| You save | Our price | 66 to 70% |
| Chiller included | Yes | Yes |
| Uses the bathtub you own | Yes | No |
| Rolls away when not in use | Yes | No |
| Uses power (daily) | 1-2 hours | 24 hours |
| Never needs winterizing | Yes | No |
Prices from each brand's own website, audited August 29, 2026, and subject to change. Plunge lists $9,990 and was running a promotion on that date. Blue Cube is the DIP, their entry model. Runtime and winterizing reflect each brand's published guidance. Plunge, Renu Therapy and Blue Cube are trademarks of their respective owners and are not affiliated with HomePlunge.
Setup, start to finish
Six steps. That is the whole setup.
No plumbing. No remodel. The chiller rolls up to the bathtub you already own, the arm goes over the rim, and it plugs into a standard outlet.
- Roll it up to the tubIt is on wheels. Nothing is plumbed in and nothing is permanent.
- Quick-connect the hose-arm into the chillerOne arm carries both hoses, and they stay concealed inside it.
- Dip the arm into the waterThe arm bends and stays where you set it, so it fits over the rim of the tub you already have.
- Plug it in. Turn it on.A standard household outlet. There is nothing to wire.
- Set your temperatureSet it on the unit or schedule it from the Tuya app. The H3 goes down to 34°F.
- Get inThat is the whole setup, and it takes minutes.
Award-winning design
The first cold plunge to win at CES.
Recognized by TIME's Best Inventions of 2025 and the CES Innovation Awards. Named Best Indoor Cold Plunge of 2026 by Garage Gym Reviews, with the highest score of any plunge on their list.
Choose your model
Two plunges. One promise.
The Summer Sale
Free Bath Robe and free shipping with every model
HomePlunge Bella
The 1/2 HP chiller. Smaller footprint. Designed for tighter bathrooms.
$2,499 $1,999 $500 off
0% APR · Free shipping · Free Bath Robe
Shop BellaFAQ
Questions, answered.
How long does it take to cool?
One to two hours for most users.
How much will my electric bill go up?
Unlike always-on plunges, HomePlunge runs only 1–2 hours a day. Turn it off when you're done and come back tomorrow.
Do I need to winterize my HomePlunge?
Absolutely not. HomePlunge is designed for your bathtub and never needs to be exposed to freezing outdoor temperatures.
Do you offer financing?
Yes. 0% to 36% APR via Shop Pay Installments and Affirm, subject to eligibility.
How long is the warranty?
One year, with up to 3 additional years available through Surebright.
Can I pre-schedule a chill?
Yes. Scheduling is available via the Tuya smart app. Set it before leaving home and come back to a ready plunge.
Do you ship internationally?
We're rolling out international orders slowly. Email info@thehomeplunge.com with your shipping address for availability.
Ready to make your tub your plunge?
Free U.S. shipping, 0% APR financing, and a 1-year warranty, on every order.
New to cold water? Read the complete guide to a cold plunge at home