About the HomePlunge H3

The HomePlunge H3 is a cold plunge water chiller that turns your existing bathtub into a fully functional cold plunge — no dedicated tub, no bags of ice, and no plumbing required. It's the premium model in the HomePlunge lineup, purpose-built for anyone who wants the benefits of cold water immersion without redesigning their bathroom or committing to a bulky standalone setup.

How It Cools

The H3 is powered by a 1HP compressor that circulates and chills your bathwater at a rate of 20–30°F per hour. For most standard bathtubs, that means your water reaches cold plunge temperatures before you've finished your morning coffee. Precise digital temperature control lets you dial in anywhere down to 34°F — whether you prefer an introductory 60°F session or a full deep-cold protocol, the H3 locks in your target and holds it there. No guessing, no thermometer checks, no temperature drift halfway through your soak.

Why a Chiller Instead of Ice

If you've ever tried a DIY ice bath, you already know the pain points. Buying ice in bulk gets expensive fast. Hauling bags from the store to the tub is a chore that gets old after the first week. And even when you do fill the bath with ice, the temperature is inconsistent — it spikes the moment you get in and warms unevenly as the ice melts at different rates.

The H3 solves all of that. It delivers consistent, repeatable cold water at the exact temperature you choose, every single time. The built-in smart app lets you schedule sessions in advance, so the H3 can have your bath chilled and waiting before your alarm goes off or right when you get home from the gym. No prep, no cleanup, no daily ice runs. Just step in.

Over time, a chiller also costs less than ice. A single bag of ice lasts one session. The H3 runs on standard household electricity and uses less energy than most people expect — often under an hour of active cooling per day once the water is at temperature.

Setup and Portability

One of the biggest advantages of the H3 is that it requires zero plumbing modifications. Two insulated hoses connect the chiller to your bathtub using a simple faucet adapter, and the unit plugs into a standard wall outlet. That's it. Setup takes minutes from the moment you open the box, and there's nothing permanent about the installation.

When you're not using the H3, disconnect the hose-arm with a button and roll it into a closet, a corner of the garage, or under a counter. It's compact and portable enough for apartments, rental homes, or anyone who doesn't want a piece of recovery equipment sitting out full-time. You get the performance of a professional-grade cold plunge chiller with the flexibility to put it away whenever you want.

Built-In Filtration

The H3 includes a built-in reusable water filter that keeps your bathwater clean between sessions. It captures particulates and helps maintain water clarity, so you don't need to drain and refill after every use. When it's time, just rinse the filter — no replacement cartridges to buy and no ongoing filter costs. And when the water has run its course, simply drain the tub and start fresh.

The Benefits of Cold Plunging at Home

Cold water immersion is used by professional athletes, physical therapists, and wellness practitioners around the world — and the research behind it continues to grow. Regular cold plunge sessions are associated with faster muscle recovery after intense exercise, reduced inflammation and joint soreness, a measurable increase in dopamine and norepinephrine that supports mood, energy, and mental clarity, and improved sleep quality when practiced consistently.

The challenge has always been access. Gym plunge pools have limited hours. Cryotherapy sessions are expensive. Ice baths are a hassle. The H3 removes every barrier by bringing cold therapy into the space you already have — your bathroom.

Who the H3 Is For

The HomePlunge H3 is built for anyone with a bathtub and a reason to feel better. That includes competitive and recreational athletes who want a reliable post-workout recovery tool, wellness enthusiasts building a cold exposure or breathwork practice, people managing chronic soreness or inflammation, and anyone who wants to start their day with sharper focus and more energy. If you have a bathtub at home, you have everything you need to get started.

About the HomePlunge Bella

The HomePlunge Bella is a compact cold plunge water chiller that transforms your bathtub into a personal cold plunge — no ice, no dedicated tub, and no plumbing required. Designed as the streamlined entry point in the HomePlunge lineup, the Bella delivers real cold plunge performance in a smaller, quieter, and more affordable package.

How It Cools

The Bella is powered by a 1/2HP compressor that circulates and chills your bathwater steadily and efficiently. It won't cool quite as fast as the larger H3, but for most standard bathtubs you're looking at cold plunge–ready water well within a reasonable window — especially if you schedule your session in advance. Digital temperature control lets you set your target anywhere down to 41°F and the Bella holds it there with precision. No thermometer guessing, no temperature swings, no ice melt math.

Why a Chiller Instead of Ice

Anyone who's tried a DIY ice bath knows how quickly the novelty wears off. Buying ice in bulk is expensive. Hauling it to the tub is tedious. And even when you get it right, the temperature is inconsistent — it spikes the second you sit down and shifts unevenly as the ice melts.

The Bella eliminates all of that. It delivers consistent, repeatable cold water at the exact temperature you choose, session after session. The built-in smart app lets you schedule cooling in advance, so your bath is chilled and waiting before you wake up or right when you get home from the gym. No prep, no cleanup, no daily ice runs. Just step in.

Over time, a chiller costs less than ice. A single bag gets you one session. The Bella runs on standard household electricity with a modest energy draw — its smaller compressor sips power, often using less energy per day than a space heater running for an hour.

Setup and Portability

If you're short on space, the Bella was made for you. It requires zero plumbing modifications — two insulated hoses connect the chiller to your tub using a simple faucet adapter, and the unit plugs into a standard wall outlet. Setup takes minutes, and nothing about the installation is permanent.

The Bella's smaller footprint makes it ideal for apartments, small bathrooms, and rental homes. When you're done, disconnect the hose-arm with a button and tuck the unit into a closet, under a sink, or behind a door. It's one of the most portable cold plunge chillers on the market — designed to disappear when you don't need it and perform when you do.

Built-In Filtration

The Bella includes a built-in reusable water filter that keeps your bathwater clean between sessions. It captures particulates and maintains water clarity, so you're not draining and refilling every time. When the filter needs attention, just rinse it — no replacement cartridges, no recurring costs.

The Benefits of Cold Plunging at Home

Cold water immersion is used by athletes, coaches, and wellness practitioners worldwide — and the research behind it continues to grow. Regular cold plunge sessions are associated with faster recovery after hard training, reduced post-workout soreness, a noticeable lift in mood, energy, and mental focus, and improved sleep quality when practiced consistently.

The barrier has always been access. Gym plunge pools have limited hours. Cryotherapy is expensive. Ice baths are a hassle most people abandon within weeks. The Bella removes every obstacle by bringing cold water immersion into your bathroom — at a price point and size that make it easy to commit.

Who the Bella Is For

The HomePlunge Bella is built for anyone who wants the benefits of cold water immersion without the bulk, noise, or premium price of a full-size chiller. That includes first-time cold plungers building a consistent practice, apartment dwellers and renters who need a compact solution, athletes who want reliable post-workout recovery at home, and wellness-focused individuals incorporating cold exposure into their daily routine. If you have a bathtub and a standard outlet, you have everything you need to start cold plunging today.

HomePlunge Bella vs. HomePlunge H3

The Bella and H3 share the same core technology — digital temperature control, smart app scheduling, built-in filtration, and zero-plumbing setup. The difference is size and speed. The H3's 1HP compressor cools faster and handles larger tubs. The Bella's 1/2HP compressor takes a bit longer to reach target temperature but runs quieter, draws less power, and fits into tighter spaces. If you plan ahead and schedule your sessions, the Bella delivers the same cold plunge experience in a more compact, budget-friendly package.