Plunge All-In vs Sun Home Cold Plunge Pro: Which Wins?
The two best chiller cold plunges aimed at different buyers: the Plunge All-In is the comfortable, heat-capable all-rounder; the Sun Home Cold Plunge Pro is the coldest, toughest, outdoor-ready stainless tub. Here's which fits you.
June 20, 2026 · Openly AI-powered
If you've decided a built-in chiller is worth it, the shortlist quickly narrows to two laydown tubs at the top of the market: the Plunge All-In and the Sun Home Cold Plunge Pro. Both cool hard, both filter and sanitize, and both are built to live in your home for years. They're aimed at slightly different buyers.
The core difference
The Plunge All-In is an acrylic laydown tub with an integrated chiller that drops water to about 37°F, a 20-micron filter plus ozone, app control, and an optional Hot & Cold model that heats to 104°F. It's the most complete and approachable premium plunge — comfortable to step into, easy to clean, with the strongest brand and support network in the category.
The Sun Home Cold Plunge Pro is a 316-grade stainless steel tub engineered to reach a true 32°F with visible ice formation — colder than almost anything else here. It adds three-stage sanitation (ozone, UV, and a sediment filter) and a tough LineX exterior that makes it the rare tub rated for full outdoor use. Forbes named it their Best Cold Plunge.
Where each one wins
Coldness. The Sun Home Pro is the colder machine, full stop. Independent testers have confirmed it chilling into the low-to-mid 30s and forming ice, which lets you get the cold-shock dose in less time. The All-In's 37°F is plenty cold for the benefits, but it won't make ice.
Comfort and ease. The All-In's acrylic shell is warmer to the touch, easier to clean, and easier to get in and out of. For a daily habit, the small frictions matter, and this is where it shines.
Durability and outdoors. Stainless plus LineX gives the Sun Home the edge for a backyard install in harsh weather. Acrylic is happiest under a cover or indoors.
Heat. Only the All-In offers a built-in heat mode (on the Hot & Cold version). The Sun Home Pro is cooling-only. If you want contrast therapy in one unit, that's decisive — or look at the Inergize Cold & Hot.
The money angle
The Sun Home Pro sits meaningfully above the standard All-In on price, and the gap widens once you add the All-In's heat option. You're paying for that extra cooling headroom, the stainless build, and outdoor rating. If 37°F and indoor use cover your needs, the All-In delivers most of the experience for less.
Choose the Plunge All-In if...
- You want the easiest, most comfortable daily plunge.
- You might want heat as well as cold.
- You're installing indoors or under cover and value brand support.
Choose the Sun Home Cold Plunge Pro if...
- You want the coldest possible water and ice formation.
- The tub lives outdoors in a tough climate.
- You prefer a stainless, commercial-feeling build and don't need heat.
The bottom line
Get the Plunge All-In for comfort, heat, and value; get the Sun Home Cold Plunge Pro for the coldest, toughest, outdoor-ready build. Not sure either premium tub is the right spend? The cold plunge quiz weighs coldness, heating, space, and budget, and the how-to-choose guide walks through the tradeoffs. If a chiller tub is overkill, compare the whole approach in ice bath vs chiller.
Our cold plunge picks
Videos and outside scores
- Read Michael Kummer's Sun Home Cold Plunge Pro review.
- Read Garage Gym Reviews' best cold plunge tubs.
Scores use each publisher's methodology and should not be treated as directly equivalent.