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Cold -2C degrees
Leak-Proof Design
Beast of a Unit
2 Year Warranty
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Most DIY plunge builds end in tears - leaks, poor finish, unwanted smells and often fail within a few months. Do you really trust your handyman skills?
With this setup, you skip the headaches and start with a factory-built, rock-solid foundation that’s already proven to work at -2 °C and comes with a 2 year warranty.
Perfect for those who want a serious plunge but don’t need all the extras. Most DIY builds take countless hours — sourcing parts and materials, sealing edges, applying coats, plus lots of waiting around. With this setup, you skip all that. It’s ready to fill and chill, built for people who don’t have time to waste.
Add your own pump, ozone, or temp control later — or keep it simple and cold. Either way, you’re saving thousands compared to full commercial systems.
At 460 L, it’s large enough for all body types up to 6ft6. Water immersion all the way up to the neck and ability to get the head under, yet compact enough to fit in most home gyms, garages, or outdoor areas. Designed for everyday use and easy maintenance.
If you’ve been planning a DIY plunge or hunting for a cheaper alternative, this is the one to get. You’ll avoid the mistakes that cost others time and money, and end up with a plunge that’s clean, reliable, and built like a tank.
This isn’t your standard cold plunge — it’s a commercial-grade powerhouse. Designed to push limits, it cools all the way down to –2°C, creating true ice-bath conditions. Once the temperature drops below freezing, large chunks of ice form naturally, delivering an authentic, invigorating cold therapy experience that few systems can match.
How Cold Plunging Can Change Your Life
The benefits are endless and they are real. Here are just a few.
How cold does the plunge get?
The Subzero Plunge is a beast, it can reach temperatures as low as -2°C. At this point, you'll see large chunks of ice forming.
While this is impressive, we recommend plunging at around 0°C. This way, you can enjoy all the benefits without having a big chunk of ice poking you during your plunge
Is there a warranty?
Yes you get a full 2 year warranty. It is built to last much longer as long as you take decent care of it. Not much can go wrong with this model, if it does, we simply replace it.
What are the dimensions?
The plunge is 153cm long, 72cm wide, and 82cm high. We tested various sizes and found this one fits people up to 6ft 6in comfortably.
We also added extra width for broader shoulders, so you won’t have to hunch like in some other plunges.
Plus, the length is designed to ensure you can fully submerge your head.
What other items do I need to add?
Not much to get started. An inkbird to control the unit's temperature is very helpful. After that, you can add a pump and filter to keep the water cleaner for longer. This can be done fairly cheaply if you are happy to build your own.
Can I add chlorine or similar?
Yes you can. This will keep the water cleaner for longer. We have tested chlorine, bromine and food grade hydrogen peroxide. The hydrogen peroxide was the best as it caused zero skin irritation for us.
If you are looking for a chemical free option, you can choose the rolls royce option which uses ozone to clean the water instead of chemicals.
Accessories & Ongoing Supplies
