Plunge All-In vs Sun Home Cold Plunge Pro

It seems backwards, but the cheaper tub here does more. The Plunge All-In ($5,990) cools to the high 30s and can also heat — a genuine hot-and-cold tub run from a thermostat on the side — while the Sun Home Cold Plunge Pro costs well over twice as much ($13,800) and is cooling-only. What you're paying that premium for is colder water and a tougher build. The Sun Home reaches a true 32°F and can make ice, where the Plunge bottoms out around 37–39°F, and it wraps that in a stainless-steel tub with three-stage UV, ozone, and 20-micron filtration. The Plunge counters with everyday livability: an easy-clean acrylic shell, ozone filtration, plug-into-a-standard-110V-outlet simplicity, and the option to run warm when you want a soak instead of a shock. One detail worth weighing at this price: the Sun Home carries only a one-year warranty, while Plunge backs its tubs longer. So the real question isn't which is "better" — it's whether sub-freezing water and a stainless build are worth doubling your spend and giving up the heat function. Here's how to choose.