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The Sub-Zero Plunge

The Sub-Zero Plunge

$2,999 $3,799
Sold out
Black FridayGet this plunge with AutoClean, the soft top lid, steps, mat and 2 years of filters for $3,599.See the bundle

Tub Colour:
Water Care:
Lid:

  • Cools to -2°CReal ice, not just cold water
  • Up to 12 months of clean waterAutoClean Water Care System, no chemicals needed
  • 2-year warranty5-year upgrade available
  • Speak to the ownerGet a call back within 30 minutes
View full details

The Sub-Zero Plunge

$2,999 $3,799
Sold out

The upgrade

AutoClean Water Care System

Cleaner water for longer. No chemicals needed.

  • 01

    No chemicals needed

    An ozone cycle runs by itself for 30 minutes every day. There is nothing to buy, measure or pour in.

  • 02

    Cleaner water for longer

    Ozone treats the water while the filter traps dirt, hair and lint. Two systems working together.

  • 03

    Longer between water changes

    Up to 12 months between water changes*, against up to 6 with Standard Filtration. Less draining, refilling and waiting for the water to get cold again.

Standard Filtration AutoClean Water Care System
Water treatment Pump and filter. You treat the water yourself with chlorine, peroxide or bromine. Pump and filter, plus an ozone cycle that runs automatically for 30 minutes every day. No chemicals needed.
Between water changes Up to 6 months Up to 12 months*
Price Included +$600

*Depending on usage, bather hygiene and routine maintenance. With either option, the filter needs a rinse every 2-3 weeks.

Joel, owner of Plunge City

Joel, Owner and Product Designer

Got questions? Speak to me directly.

No call centre and no sales script. I designed the Sub-Zero Plunge and I know it better than anyone. Ask me about setup, space, power, running costs or which colour to choose, and you'll get a straight answer.

Request a call back

Request a call back and I'll call you within 30 minutes.

Or call 02 9053 1036

Request a call back

Leave your details and I'll call you back within 30 minutes (unless it's some crazy hour, then it'll be first thing in the morning).

Sub-Zero Plunge in all three tub colours

Three Tub Colours

Black Galaxy, Ivory Stone and Blue Speckle. Each tub is a solid drop-in built from reinforced FRP with steel beams inside and a marine-grade gelcoat finish.

Choose Black Galaxy for a deep, dramatic look, Ivory Stone for a clean, bright one, or Blue Speckle for a fresh blue. Same plunge, same performance.

Magnetic Soft Top Lid for the Sub-Zero Plunge, laid flat

Two Lids. Your Choice.

Every Sub-Zero Plunge comes with a hard lid on hinges. It is solid, lifts up and out of the way, and has a lock.

The soft top lid is a $200 upgrade. It is lightweight, folds in half and holds itself in place with hidden magnets.

Chunks of ice forming in the Black Galaxy Sub-Zero Plunge

Commercial-Grade Cooling Power

This isn't your standard cold plunge. It's a commercial-grade powerhouse that 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, for an authentic ice bath experience few systems can match.

Sub-Zero Plunge powerbox open, showing the temperature controller and ozone unit

The Powerbox: Organised and Automated

Everything that runs your plunge is organised in one place: the temperature controller, the pump connections and the power. Set your exact temperature on the unit or from your phone, anywhere from -2°C to 15°C, then step back. It runs itself.

Easy Maintenance, Minimal Effort

Keeping your plunge in top shape couldn't be simpler. Just rinse the filter every 2-3 weeks. It takes less than five minutes.

Man relaxing in the Black Galaxy Sub-Zero Plunge

Spacious, Comfortable, and Built for All

Our cold plunge measures 153 cm long, 72 cm wide, and 82 cm high. Tested personally by our founder (6 ft tall, 95 kg), it offers generous space and comfort, and even users up to 6 ft 6 in fit with ease. Stretch your legs fully, keep your shoulders relaxed, and sink in up to your neck. Beginners can start on the built-in step and ease in gradually.

Frequently Asked Questions

What is the AutoClean Water Care System?

It is an ozone unit fitted in the powerbox. It adds automatic ozone sanitation to the pump and filter system: an ozone cycle runs by itself for 30 minutes every day, with no chemicals needed. The water stays cleaner for longer and you can go up to 12 months between water changes, depending on usage, bather hygiene and routine maintenance.

What's the difference between the three colours?

Only the colour of the tub. The plunge and its performance are identical.

Which lid should I choose?

The hard lid on hinges is included, and it has a lock. The soft top lid is a $200 upgrade: it is lightweight, folds in half and is held in place by magnets.

How much is shipping and when will it be sent?

Shipping is calculated at checkout based on your postcode. In-stock orders are dispatched within 48 hours, and we'll send you a tracking number.

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. We recommend rinsing the filter every 2-3 weeks to keep it in good condition.

Water changes are needed about every 6 months with Standard Filtration, where you add chlorine or peroxide yourself, and up to every 12 months with the AutoClean Water Care System. Both depend on how clean you are before plunging and how often you use it.

How do I empty it?

Using the included pump, it takes about 10 minutes. All you need is a garden hose and the pump does the rest.

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.

  • 5 stars: 37 (97%)
  • 4 stars: 1 (3%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
This product has no reviews of its own. The merchant grouped it with related products, so the reviews shown are from across that group.
D
Daniel T.

The whole experience speaking to Joel, purchasing has been amazing. Even after I’d purchased and even 4 weeks later I was asking him questions and he was more than happy to help me. The ice bath itself is absolutely incredible, I’m so happy I decided to upgrade from my old setup, everything about it is quality. I love to soft top cover, it allows me to have it all setup in my outdoor area the way I want. I would highly recommend upgrading if you’re thinking about it and chat to Joel if you have any questions or concerns. You won’t regret it

M
Matt C.
Really impressed with this ice bath

Really impressed with this ice bath. Well worth the money.

A
Arthur T.
Ultimate Gift

No words can explain the service from Joel from Plunge City, after speaking with James who was amazing got in contact with owner Joel.
Walked me through what I needed and purchased this Ultimate Gift the Rolls Royce the deal was awesome.
I have tried previous those cheaper barrels which you fill up with ice which ends up costing you one of these units a year easy just on ice... Then purchased one oval with chiller absolutely waste of my time, struggled to get anywhere worth while.
I have been with back issues 25 years and recently had sciatica, that was the final push to get serious about this and start to fight against the inflammation I have. Have used it daily for just one week and already WOW. I know we have no guarantees in life but so looking forward to give it my all not to mention all the other benefits from ice plunging.
Not at the business range yet in coldness but working my way slowly..because this unit is the real deal ice forms just like that 🥶.
I can not say enough for this unit and especially the service and after sales support it's like your friends for life with these guys. Thanks a million and Highly recommend if you want best plunge on the planet 👍 👌

G
Gary C.
Love the new Plunge ice bath

Love the new Plunge ice bath. It’s a trade up from an inflatable version and it’s so much easier to keep clean and cold. Everyone I climb in it’s clean and cold! Also impressed with the customer service as we had an issue with a faulty pump, but a replacement arrived quickly with clear instructions about installation. Joel was very helpful.

K
Karl H.
Absolutely perfect

Wow
Very impressed. Quality perfect,
I had some extra questions and Joel was a legend in his quick response.
I have my set at -2 which forms ice blocks which I have to break otherwise I can't get in..more ice the better.
The results are insane I train 6 days a week and start every morning at 0500 with a ice bath for 5 to 6min.
Great product ..love it
Well done lads

V
Vic V.
⭐️⭐️⭐️⭐️⭐️ Game-Changer – Absolutely Worth It!

After struggling with a traditional ice bath setup using a high-end $3,000 chiller, I was honestly ready to give up. That system—like most ice baths on the market—was loud, ran constantly (day and night), and produced a huge amount of condensation on the pipes, the bath, and the unit itself. It also blasted out hot air, required constant cleaning and filter changes, and eventually broke down from overuse. It just wasn’t sustainable.

Then I discovered Plunge City… and what a breath of fresh air! This is truly a masterpiece of design. It’s built like a fridge with a fiberglass tub and a built-in filter pump. That means no condensation, no loud noise, and barely any run time thanks to excellent insulation. Best of all, it cools down to -2°C—something I couldn’t get from any chiller setup, which topped out around 3°C.

Setup was a breeze, maintenance is simple, and the internal pump and filter are super easy to manage. On top of that, the customer service has been absolutely top-notch.

If you’ve been frustrated with traditional chiller-style ice baths, do yourself a massive favor and switch to Plunge City. Highly recommended!

W
Wes I.
Best Ice Bath Available

Great service and even better product.
Always ready to go, this sleek unit is so easy to set up and maintain.
If you are sitting in the fence it just doing your homework on the various set ups available in Australia, I’ll save you heaps of time and money and say just go for this one.

L
Les H.K.

What a difference this makes to my wellbeing . Love it 😊

K
Ken O.
Great product, great price, great people 👍

Although I'm up in Darwin with the ambient temperature being around 34 degrees Celsius the plunge bath works perfectly. Great product at a great price with great people to deal with.

D
David K.
Very happy

Very happy.

S
Steve e.
The sub zero plunge plunge (rolls Royce package )I bought was one of the best purchases I’ve made

The sub zero plunge plunge (rolls Royce package )I bought was one of the best purchases I’ve made.

I plunge every day and it reduces pain I have.

The team led by Joel is super professional, helpful and truly cares about the customer.

Steve 😊

B
Blake
Absolutely stoked with my ice bath from Plunge City

Absolutely stoked with my ice bath from Plunge City. The quality is top-notch, setup was easy, and it performs exactly as advertised. From ordering through to delivery, the whole process was smooth and professional. You can tell these guys really know their stuff and care about their customers. If you’re serious about recovery and cold exposure, I wouldn’t look anywhere else. Highly recommend!

S
Sean P.
Perfection from the first contact

Great working with the team. Incredibly knowledgeable and supportive. Great communication right through the process including delivery.
Highly recommend this package- the ozone has really reduced any ongoing maintenance.
Unit holds temp perfectly and is always ready to go. If you're on the fence - pull the trigger you won't be disappointed!

A
Adam L.
Excellent product

Excellent product. Joel runs a great business

M
Michael C.
Clever concept much more practical and durable than more expensive alternatives

Clever concept much more practical and durable than more expensive alternatives. It takes a while to reach operating temperature ( in my case 4 degrees) but that can be speeded up by adding a few ice blocks on initial set-up. Once temperature is reached then the system efficiently maintains set temperature. Plan is to crank it down to zero degrees on Christmas Day.

T
Tristan
Amazing ice bath

Word's can't fully express how happy I am with the plunge. It was packaged up like fort knox - no risk getting damaged in transit. The packaging layer on the bottom that allows you to slide it around is genious! Setup was simple - just follow some great videos along and it's running in no time.

Very premium quality look and feel and boy does it get cold! Takes a bit to get down to temperature but once there holds it really well. Unit is super quiet too so you don't even notice that it's running.

Thanks team! Phenomenal plunge for an even better price. Am recommending to all the friends.

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!!

G
Greg W.
Fantastic!

Easy set up, works incredibley well!

H
HB
The greatest ice bath

I've searched for many hours looking at different companies, and in the end I went with plunge city due to the sleek design over other competitors, Joel and his team have been amazing to talk to and the Customer service has been absolutely amazing very quick responses and always happy to awnser any questions i had no matter how silly, after the bath had arrived it looked even better in person than online the painted matt finish feels amazing, the design was the main reasoning behind the purchase however after the quick installation of everything I found the bath to be so much more than just a beautiful unit its efficient, comfortable and so much more, you will not be disappointed, my wife doesnt even like ice baths but after seeing it in person also agrees what a stunning piece these boys have created. I could write this review for hours about how good this unit really is! Do yourself a favour and look no further than plunge city. 10 stars

R
Ron F.
Perfect and simple

Been a fan of cold plunges for years and recently upgraded my DIY home made after a few years of use.
I like the simplicity of this plunge as well as having all parts visible. The delivery was prompt and communication from plunge city was nothing short of amazing. This cold plunge is well worth the money and priced very well compared to competitors.

J
Justin S.

Great product

H
Heta T.
Awesome set up!

The plunge city ice bath is an excellent affordable all in one unit. Very easy to set up and well designed. A great addition to our health routine.

T
Tony Q.
Great Product and Service

I’m loving my Rolls Royce Plunge set up . Delivery was fast and efficient and the set-up instructional videos were easy to follow so set up was very easy . I had a couple of questions early and the team at Plunge City answered them all clearly . I would highly recommend the product and the team at Plunge City .

S
Stuart W.
Take the Plunge !

Great product - easy to set up, fantastic to use.

Fast Dispatch
We will dispatch your plunge within 48 hours and send you a tracking number.
Up to 5 year warranty
Covered by a comprehensive 2-year warranty. 5-year warranty upgrade available.