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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
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 153cm long, 72cm wide, and 82cm high, 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 26 reviews
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H
HB
Top blokes, top product

Guys have been amazing, joel and evan i can't speak more highly of. Any concerns or questions the boys have promptly responded. I've had some personal things going on at the moment with family passing which has hit me pretty hard and ive been slightly rude throughout the process due to this, im truly amazed at the professionalism from joel and evan to spite my poor behaviour. I can't thank the team enough for the support and quality product. Very happy with the beautiful unit

N
Nate G.
Reliable Ice Bath and Exceptional Support

We’ve been using our PlungeCity ice bath daily, and it’s been an absolute game changer for our post-exercise recovery. The unit keeps temperatures consistently cold—even with heavy daily use—and performs exactly as promised. My daughter incorporates it into her routine, and it’s become an essential part of her recovery from running training.

A special mention to Joel, who has provided outstanding after-sales support. He’s always responsive, approachable, and genuinely willing to help whenever we’ve had questions or needed guidance. It’s rare to find that level of service these days, and it really sets PlungeCity apart.

Highly recommend both the product and the team behind it.

R
Rikki A.
Absolutely love it !!

The guys at plunge city looked after me from my first enquiry!
Excellent communication, great service, quick delivery. Awesome product!
I am training for the Norseman Xtreme Triathlon 2025 and needed something to help with cold water exposures. This plunge has been excellent. Slick design, functional, perfect size.
I am in it 2-3x a day.
Very very happy with it and I’ve recommended it to others. Keep up the great work guys!!

R
Robert G.
Good bit of kit

Life changing. The only criticism is that I think the filter pump is a bit under powered- just dribbles water.

G
Greg W.
Fantastic!

Easy set up, works incredibley well!

Accessories & Ongoing Supplies

SHOP ALL
Sale
Cold Plunge Filters - 12 Month Supply
Regular price $99
Sale price $99 Regular price $139
Sale
Outdoor Plunge Cover
Regular price $199
Sale price $199 Regular price $219
Sale
The GripStep XL
Regular price $129
Sale price $129 Regular price $149
Upgrade to 5 Year Warranty
Regular price $700
Sale price $700 Regular price
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.