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The Sub-Zero Plunge

The Sub-Zero Plunge

Regular price $3,199
Sale price $3,199 Regular price $3,899
Sold out
Australia's most powerful and efficient cold plunge.
Cold -2C degrees
Crystal Clear Water
Precise Temp Controls
Easy Maintenance
Warranty:
Water Maintenance:
Easy Maintenance Add-ons (optional):
Cold Plunge Filters - 12 Month Supply

Cold Plunge Filters - 12 Month Supply

Regular price $99
Sale price $99 Regular price $139
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Regular price $99
Sale price $99 Regular price $139
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The Sub-Zero Plunge

Regular price $3,199
Sale price $3,199 Regular price $3,899
Sold out

Powerful. Smart. Reliable.

Leak-Proof Guarantee

Engineered with a leak-proof drop-in design for extreme durability, our cold plunge combines fiberglass and steel for marine-grade quality that lasts a lifetime. Say goodbye to leaks and enjoy a product that looks and feels great.

Precise Temperature Controls

Set your exact desired temperature, and our plunge will do the rest. Control it directly on the unit or via an app on your phone for ultimate convenience. Reliable, precise, and easy to use, our system lets you adjust the temperature from -2°C to 15°C for a perfect cold plunge experience every time.

Up To 6 Months of Clean Water

Keep your water crystal clear for up to 6 months with our advanced filtration system. It effortlessly catches dirt, hair, and fluff, ensuring long-lasting water purity and reducing the need for frequent maintenance. Enjoy a consistently refreshing experience with minimal effort.

Easy Maintenance

Maintaining your cold plunge is a breeze. Simply rinse the filter every 2-3 weeks—it takes less than 5 minutes. Enjoy a hassle-free experience with minimal upkeep, so you can focus on other more important things.

Extreme Cooling to -2°C

This isn't your average cold plunge - it's a commercial-grade powerhouse. Capable of cooling to -2°C, it goes beyond the limits of a typical cold plunge. At temperatures below 0°C, it forms large chunks of ice, creating a genuine ice bath experience unlike most others on the market. Experience the ultimate in cold therapy with unmatched cooling performance."

Optimal Size for All

Our cold plunge is designed for optimal comfort and fit. I tested the first prototype myself, standing 6ft tall and weighing 95kg, and found it to be perfect. Even customers who are 6ft 6 can comfortably fit. The size allows you to fully stretch your legs, and the width accommodates your shoulders comfortably. The water reaches right up to your neck, which is crucial for a full-body plunge. You can even submerge your head for that final, invigorating dunk. It truly checks all the boxes in terms of size. Beginners can start by sitting on the step, immersing their legs and half of their torso, making it perfect for users at all levels.

How Cold Plunging Can Change Your Life

The benefits are endless and they are real. Here are just a few.

Rapid recovery
Mood booster
Immune support
Elevated energy
Mood booster

Frequently Asked Questions

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

How do I set the temperature?

You can set a desired temperature directly on the included digital thermometer or using the app. It can be any temperature you like. Set it and let the big rig do the rest.

How much maintenance is involved?

Very little maintenance is required.

We recommend rinsing the filter every 2-3 weeks. This will keep it in good condition. For even cleaner water, you can rinse it once a week. You'll get a feel for what works best as you go along.

Water changes are needed every 3-8 months, depending on factors like how clean you are before plunging and how often you run the filter. Your usage will determine the exact frequency.

How do I empty it?

Just place the pump at the bottom of the plunge and connect your garden hose. The pump will remove about 95% of the water. For the last bit, use a bucket to scoop it out. It only takes a minute or two. We chose not to include a drain to avoid potential leaks.

How big is it? Will I fit in?

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.

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.

Customer Reviews

Based on 12 reviews
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G
Giles P.
Great Plunge - Well Done

Simply excellent, set up is so easy and Joel provides some great videos. Really impressed, Joel provides advice and is ready to answer questions - Best service.
I really recommend plunge and as importantly the honesty of the Plunge Team.
Thank you

K
Ken W.
Best Plunge Ever!!!

We absolutely love this plunge. The finish is amazing and well thought out, it holds set temperature no problem. We bought extra filters and change it every month (we clean used ones for future use). We also purchased the Ozone and the water has stayed crystal clear but we do shower before each plunge. Highly recommend this product.

D
Denis P.
Pretty good for price!

Fraction of the price than other plunges out there and the service was good as well, took the time to answer questions and help us out!

C
Chloe M.
Good product. So far so good.

Product: so far so good. Does what's needed. Finish quality could improve slightly
Service: could be better. Communication and commitment to timeframe etc

T
T.B.
Great unit

After thorough research, I decided on Plunge City and couldn’t be more satisfied. Unlike many alternatives that use repurposed aquarium chillers and inflatable tubs prone to deformation, this model boasts superior build quality and durability with surprisingly thick fibre glass. I also considered DIY options like converting a chest freezer but was deterred by potential issues such as leaks and complex assembly. This cold plunge strikes the perfect balance between convenience and long term reliability.

The construction is robust, and the user-friendly Wi-Fi settings make temperature adjustments effortless. I began my sessions at 10°C and have gradually decreased to 6°C over the past week, appreciating the precise control this unit provides.

One recommendation: run the ozone generator longer than the suggested times. I’ve found it effective to run at least two sessions of 1.2 hours each day.

Joel provided excellent support throughout the process, keeping me well-informed along the way.

For anyone seeking a dependable and well-designed cold plunge, this product (at this price point) is an excellent choice.

Accessories & Ongoing Supplies

SHOP ALL
Fast Dispatch
We will dispatch your plunge within 24 hours and send you a tracking number.
Up to 5 year warranty
Covered by a comprehensive 2-year warranty. 5-year warranty upgrade available.
Financing Available
Pay $0 today and get up to 24 months interest free with zip pay. Approved in minutes