Cold plunge
Cold Stoic 3.0
The iconic dual-temp flagship. Cold and heat, 37 to 104°F.
From $12,799
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Aurelius at home
Cold recovery that fits into your everyday routine.
Part of the ritual
A plunge you will want to step into, morning or night.
5-year limited warranty
Handcrafted in California and built to last for years.
A quiet, steady chiller
A 0.5 HP chiller and insulated cover hold temperature all day.
Hot and cold in one
Runs 37 to 104 degrees, for cold plunge and warm contrast.
Control it from your phone
A touchscreen and app, with customizable ambient lighting.
Lay down, full length
A contoured interior lets you stretch out and fully submerge.
Step in from either side
Dual-access entry comes in twenty-four color combinations, your pick.
Cleaner, longer
Ozone and dual filtration keep the water clear with less effort.
Simple filter care
Rinse or replace the filter on a simple rhythm to keep the water clear.
No plumbing to install
Fill and drain with a standard garden hose, no plumber needed.
Plug in and go
Into a standard GFCI outlet, set your temperature, and you are ready.
Room to stretch out
A full-length interior built for lying back, not sitting up.
Brazilian Walnut
Dark chocolate grain, the heaviest of the six.
Driftwood Grey
Weathered grey from day one.
Antique Mahogany
Deep red-brown composite that holds its color.
Natural Teak
Golden and even, the warmest of the greys.
Aurelius
$11,999
Built for performance.
Engineered to last.
Specifications and dimensions
Specifications and dimensions
Dimensions
Outside Tank 70” × 50.75” × 29.75”
Inside Step 62.5” × 26.75” × 26”
Connectivity
App connected
Touch screen
Weight
Empty ~297 lbs
Filled ~1,065 lbs
Power
Cooling 518 watts
Heating 1013 watts
Standard 120V GFCI outlet
Water capacity
Filled 95 gallons
Noise level
58 dB from ~3 ft
Dimensions
Outside Tank 70” × 50.75” × 29.75”
Inside Step 62.5” × 26.75” × 26”
Connectivity
App connected
Touch screen
Weight
Empty ~297 lbs
Filled ~1,065 lbs
Power
Cooling 518 watts
Heating 1013 watts
Standard 120V GFCI outlet
Water capacity
Filled 95 gallons
Noise level
58 dB from ~3 ft
Effortless ownership
and thoughtful features
Dual filtration
Cleaner water, less effort
External and internal filtration capture debris and micro-particles, with tool-free filter swaps for easy upkeep.
Ozone purification
Naturally clean, naturally simple
An integrated ozone generator reduces bacteria and organics naturally, keeping water fresh with minimal chemicals.
Technology
Smart control, anywhere
Adjust temperature, switch modes, and set ambient lighting from the touchscreen or mobile app over Wi-Fi.
Performance
Serious performance, built to endure
From 37°F to 104°F, a quiet 0.5 HP chiller and thick-wall insulation hold steady temps year-round.
Design
Minimal upkeep, maximum presence
Real wood or composite decks, 24 color combinations, and a discreet mechanics bay that hides components.
Demand more from your recovery.
Most plunges cut corners—on design, performance, and support. Renu doesn’t. If you’ve been hunting for a plunge that checks every box, this is the one.
The most reliable
cold plunge on the planet
5 year
Warranty
Built for years of reliable, backed by a comprehensive warranty for peace of mind.
Real support
5 star customer support rating
Human based, responsive support that's expert guidance when you need it most.
Handcrafted
In California
Handcrafted using real, premium materials and built with meticulous attention to detail.
Aurelius
Designed by you. Built by us.
Plunge colors
Deck colors
Not sure which is right for you? Find your match.
How you like to take the cold, cold only or hot and cold, and how much room you want. We point you to the plunge that fits.
Question 1 / 5
How do you like to take the cold?
Question 2 / 5
Just cold, or cold and heat in one?
Question 3 / 5
How much room do you want inside?
Question 4 / 5
Which style fits you?
Question 5 / 5
What matters more?
Reveal match
5-STAR REVIEWS
8,000+ TRUSTED CUSTOMERS
Cold Stoic 3.0
Love my Cold Stoic
Isaiah Mustafa
Cold Stoic 3.0
Easy and convenient
LEWIS HOWES
Cold Stoic 3.0
Super reliable
Stephen Amell
5-STAR REVIEWS
8,000+ TRUSTED CUSTOMERS
Cold Stoic 3.0
Love my Cold Stoic
Isaiah Mustafa
Cold Stoic 3.0
Easy and convenient
LEWIS HOWES
Cold Stoic 3.0
Super reliable
Stephen Amell
Frequently asked questions
With advanced features and upgrades, this product sets a new standard for performance, convenience, and durability in cold/hot water exposure.
Don’t just take it from us
Customer reviews
Total 5 star reviews: 6 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
100%would recommend this product
Slide 1 selected
6 reviews
- GGWVerified BuyerRated 5 out of 5 stars1 year agoFantastic Product!
I’m very pleased with this tank—its size, strength, and especially how quietly it operates make it a standout addition if you’re looking to upgrade your wellness routine. My previous cold plunge was very noisy, but this one is a major improvement. Ordering was easy, and the tank arrived on time as promised. The tank is quite large, so it’s best to have a few people help when moving it into place.
A very important tip for future owners: Before plugging in your Aurelius tank, double-check that the internal pump in the mechanics bay (near the filter) is turned off and the valve is closed. This pump is meant only for draining the tank. Mine arrived with the pump on and the valve open, which made it noisy and caused leakage when I first powered it up. Turning the pump off and closing the valve solved the problem immediately, but it took a little while to figure out. Clearer instructions or a setup video from Renu would make this process even easier for new users.
Once set up correctly, the tank runs smoothly, stays cold, and offers plenty of space. Renu’s customer service has also been excellent—they responded promptly and ensured I was happy with the setup. For best support, I recommend scheduling your delivery any day but Friday, as Renu is closed on weekends—this way, assistance is available if needed.
In summary, if you’re seeking a high-quality, spacious, and quiet cold plunge tank—and want great customer support—the Aurelius tank is a strong choice.
RTRenu Therapy1 year agoThank you so much for the thoughtful review. We're really glad to hear you're enjoying your Aurelius tank. It's great to know the quieter operation and overall performance have made a difference for you.
Your note about the internal pump and valve is super helpful. That kind of insight is valuable for other customers, and it's great that you were able to resolve it quickly. We'll keep your suggestion in mind as we continue improving the setup experience.
Appreciate you pointing out the importance of scheduling delivery earlier in the week too. That’s a solid tip for making sure support is available if needed.
Thanks again for taking the time to share your experience. We're happy to have you in the Renu community, and if anything comes up, feel free to reach out.
- BBCVerified BuyerRated 5 out of 5 stars1 year agoAmazing product
I never leave reviews but this product deserves one. My friend has a cold stoic that I started using it about a year ago. I finally decided to get my own renu after using hers multiple times a week and doing a ton of research. Here are a few reasons why I went with the Aurelius.
- I am 6.2, 230 and didn’t like crossing my legs in the cold stoic I was looking for a larger tank. Although I did like sitting upright, I was willing to compromise for more space. I get a similar experience in this tub.
- I was initially worried the Aurelius wouldn’t be big enough, boy was I wrong. I very comfortably fit with room to spare it’s a huge tank.
- my friend complained about how difficult it was to drain her cold stoic, with the Aurelius it’s a breeze to change the water.
- I typically plunge at 6am and the light is awesome feature in my backyard.
- I was worried about lead time, the team was right on target, I got my renu in 6 weeks. Forewarning the thing weighs a ton make sure you have a group of people to help get it to it’s location.
- I live in Florida and this thing is super efficient it gets water cold and keeps it there.
- filter changes are a breeze, highly recommend the annual package.
- user interface has a solid UX, very intuitive. I had it up and running in minutes.
- the included cover is awesome although I wish there was a cover that just went over the actual tub vs the whole thing, it’s a shame to keep the breath deck covered with such beautiful wood.
- 100%…
- LSLarry S.Verified BuyerRated 5 out of 5 stars10 months agoMy First and last Cold plunge
I absolutely love this plunge. It’s been a a game changer for me. I use it daily some times twice a day. It has significantly reduced my inflammation. I call it the plunge of youth! At almost 60 I need all the extras I can get to keep
Me going and active like a 40 year old. I also have a medical
Condition this has helped significantly with.
- GRGreg R.Verified BuyerRated 5 out of 5 stars1 year agoBrrrrrrrr
Chilly in the high desert heat Great experience so far. Only positive Brrrrrrr
- LMLaura M.Verified BuyerRated 5 out of 5 stars1 year agoGreat cold plunge experience
We are very much enjoying our cold plunge. It was easy to set up and is working great. I am sleeping well after a week of routine plunging. Once we got through the challenges of delivery, the experience was amazing! The staff were helpful with providing information on how to unhook the chiller to move it up the stairs and it fits nicely in the space. It is very ergonomic and allows to recline for full immersion. I definitely recommend this tank.