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Certified Refurbished Inergize Cold Plunge Tub
cold-plunge-tub-2
cold-plunge-tub-woman-plunging
cold-plunge-tub-with-chiller-10
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Certified Refurbished Inergize Cold Plunge Tub
cold-plunge-tub-2
cold-plunge-tub-chiller-with-app
cold-plunge-tub-dimensions-1
cold-plunge-tub-with-chiller
Certified Refurbished Inergize Cold Plunge Tub
cold-plunge-tub-2
cold-plunge-tub-woman-plunging
cold-plunge-tub-with-chiller-10
cold-plunge-tub-man-plunging-1
Certified Refurbished Inergize Cold Plunge Tub
cold-plunge-tub-2
cold-plunge-tub-chiller-with-app
cold-plunge-tub-dimensions-1

4,000+ Tubs sold

1-Year warranty

as low as $156/mo

Free Delivery

Discover Inergize Cold Plunge Tub

Certified Refurbished Inergize Cold Plunge Tub

Certified Refurbished Inergize Cold Plunge Tub

5.0
Rated 5.0 out of 5 stars
110 Reviews
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0% interest for 12-months

As Low as $199/mo*

Learn more

The chiller is used and the tub is used. Our Certified Refurbished units undergo a meticulous inspection, repair, and testing process to meet Inergize Health's strict quality standards. While they may exhibit cosmetic imperfections such as scratches, minor dents, or minor chips, rest assured, these blemishes do not affect their performance or functionality. Hurry, we have 1 in stock. Comes with a 90 day warranty. 

Add Heater?
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0% interest for 12-months

As Low as $ $199/mo*

Learn more
  • Specs

    Pro Chiller: Specs & Details

    • Dimensions (L x W x H): 24” x 12” x 18”.
    • Weight: 60 lbs.
    • Power Supply: 110-120V, 60Hz, 6.5A. 
    • Cooling Capacity: 1,730W (5,903 BTU/hr).
    • Heating Capacity: 2,400W (8,189 BTU/hr).
    • Temperature Range: 37°F - 105°F.
    • Indoor/Outdoor Use: Yes (IPX4-rated splash resistance).
    • Hoses: Braided reinforced hoses with metal connections. 
    • Filter Type: 20 Micron.
    • Display: LED controls.
    • App Control: Schedule it around your routine.

    Tub Specs    

    • External Dimensions (LWH): 51” x 27.5” x 30”
    • Internal Dimensions (LWH): 43.3” x 20.8” x 30” (Fits up to 6'5", 300 lbs).
    • Wall Thickness: 4”.
    • Military-Grade Drop-Stitch: Ultra-insulated, durable & UV-resistant.
    • Code Lockable Lid: Retains cold & ensures safety.
    • Space-Saving Design: Stainless steel elbow hose connections.

    • • Mess-Free Maintenance: 2x Stainless steel ball valves for quick filter changes.

  • What's Inside?

    Essential Setup

    • Inergize Pro Chiller: 0.8HP industrial-grade cooling & heating.
    • Reinforced Hoses: Pre-insulated, leak-free performance.
    • Dropstitch Tub: Military-grade, fully portable build.
    • Insulated Cover: 4” air barrier + code lockable safety lid.
    • Dual-Action Pump: Fast inflation, no tools needed.
    • Travel Backpack: Pack, store, or move with ease.
  • Shipping
    • San Diego County: Pickup only (Escondido)
    • Outside San Diego: Ships in 7 business days

Discover Inergize Cold Plunge Tub

Featured Reviews

Best Mix of Features With Price
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“Inergize has a smaller footprint, portability, less expensive yet still very high-quality. Set it up in 30 minutes and control it through an app, so you can be ready to plunge anytime.”

Ryan C.

I believe the specs are on the website!
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“Pound for pound, cost and performance, it's the best. I measured the temp with a thermometer to make sure it's accurate AND it is!”

Kenny S.

Our Whole Family Loves It!
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“My spouse and I use Inergize 4-5 times per week, and our young kids even enjoy their cold dips. It has helped with our inflammation, physical recovery, mental clarity, and sleep.”

Catherine C.

Works Great in Texas Summers
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“I live in Texas, and the chiller works even in our intense heat, and the water is always cold and just right.”

Chad M.

Perfect Plunge For Big Guys & Gals
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“I love the depth of this tub! I’m 6'2" tall weighing 265 lbs, and I can fully submerge to the base of my skull without water overflowing.”

Todd Y.

Addictive Cold Plunge Tub!
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“I’ve used various cold plunges, and I am MORE than happy with my Inergize plunge. It is easy to maintain, works very efficiently, and doesn't take up much room.”

Mark W.

Can’t Believe It’s As Good As The Hype
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“I can’t believe how much it improves my mood and overall well-being. I had an issue getting started, but the team at Inergize got right back to me, and after we got it going, the owner even reached out to see if I wanted to chat with him.”

Justin B.

It So Portable
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“I winter in AZ, and I packed my tub and took it with me. There is no other tub that can do that. Ciaran is great to work with. I highly recommend this product.”

Stephen N.

Best Cold Tub For Home Use!
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“I spent the last two years looking for the perfect cold plunge option for my home, and finally I pulled the trigger on getting the Inergize plunge. I couldn't have made a better decision; the tub fits perfectly in my home office.”

James D.

Game-Changing Health Benefits
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“Doing things that are uncomfortable but safe and return immense health benefits is hard to come by. Plunging in the Inergize is one of them!”

Michael S.

Best Choice For Tall Users
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“Being 6’- 4”, I STILL totally fit in the tub, all the way to my chin, without needing to do a yoga pose to fit. Inergize is the perfect balance of high-spec features and convenience.”

Ian R.

Plunge Life!
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“I bought this unit from Ciaran because all the other plunge companies' tubs were too big and not deep enough. Living in the city, homes aren’t big, and the compact size and the 30” depth is everything I was looking for and fits my space perfectly!

Erwin Q.

Fantastic Cold Plunge
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“I wasn’t a believer in the benefits of cold plunging until I actually tried it. I plunge for 10 minutes every morning at 41 degrees, allowing me to start every day feeling awake, alert, calm, and energized!”

Ray G.

Love It!! 10/10
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“I was one of the lucky people to get my hands on the Inergize Cold Plunge early on. It is amazing! I can't exaggerate enough how crucial it has been for my recovery after long days at hockey practice."

Carl S.

Great Choice After Research
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“I did extensive research and looked at temps all the way through to the length and height of the majority of the top products. I also appreciate the communication from the team even after the initial sale. Top-notch job, guys.”

Adam P.

Great addition to my home office
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“I spent the last two years looking for the perfect cold plunge option for my home, and finally I pulled the trigger on getting the Inergize plunge. I couldn't have made a better decision; the tub fits perfectly in my home office.”

James D.

WHAT IS CERTIFIED QUALITY?

Certified Pre-Owned Inergize Cold Plunges have been examined, fixed, and verified by our expert team to ensure they adhere to Inergize Health's quality standards. These units might exhibit cosmetic blemishes, dents or scratches.

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About The Refurbished Units

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ARE THEY COVERED UNDER WARRANTY?

Yes! Your Refurbished Inergize Cold Plunge Tub comes with 90 day manufacturer's warranty.

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WHAT IS THE AVAILABILITY AND LEAD TIME?

We have a limited number of The Refurbished Inergize Cold Plunges held in stock and will be shipped out within just 7 days! However, it's important to note that our refurbished units are only available while supplies last.

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TRIED AND TESTED

Each Refurbished Inergize Cold Plunge Tub undergoes a rigorous testing process at our facility in San Diego, CA. Our experienced team thoroughly examines and upgrades each unit before testing it to ensure it's in excellent condition. This testing phase guarantees that you'll receive a high-quality product that performs like new.

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QUALITY MEETS VALUE

Discover the unbeatable value and quality of our Refurbished Inergize Cold Plunge Tub. While each unit goes through a careful restoration process to meet our standards, they might show minor blemishes that don't affect functionality.

Frequently Asked Questions about Cold Plunge Tub

Maintenance is simple and keeps your water crystal clear for months:

  • Replace the 20-micron filter every 2-4 weeks (based on usage).
  • Sanitize the water weekly using a non-chlorine-based treatment.
  • Clean the strainer weekly to prevent debris buildup.

We’ve tested it for 6+ months without a water change when properly maintained.

Not often! Thanks to advanced filtration and sanitation, you can go months without changing the water.

  • Light use (<4 week): Replace water every 4-6 months.
  • Heavy use (7/week or multiple people daily): Every 1-2 months.
  • Just replace the filter monthly and add sanitation weekly—your water stays pristine.

No. The Eco runs on a standard 110–120V line at 4.5A, so there’s no need for a dedicated circuit or breaker upgrade.

Absolutely! The Inergize Cold Plunge Tub is made from military-grade drop-stitch polyester fabric, the same rigid, high-strength material used in inflatable paddle boards and kayaks.

  • Supports 200 lbs on the edge without bending or spilling.
  • As strong as an acrylic bathtub, yet portable enough to roll into a duffle bag.

We’ve fit a 250lb+ person before, you just need to be careful of the water level check out some photos here.

We’ve also had multiple >6ft 5” users comfortably fit and head dunk without their knees popping out or water spilling over the edge.

"Best part is that being 6’- 4” I STILL totally fit in the tub, all the way submerged up to my chin, without needing to do a yoga pose just to fit. I can comfortably sit, fully under the water, every time AND I can grab the top rails to pull myself up when getting out (unlike a normal tub)." - Ian Rice.

The Inergize Chiller connects to the Tuya Smart App via WiFi, allowing you to:

  • Control temperatures remotely (adjust between 37°F and 105°F with the Pro model).
  • Preprogram on/off schedules to save energy and ensure your plunge is ready when you are.
  • Set different temperature schedules for morning and evening plunges.

No manual adjustments needed—control everything from your phone.

Yes! The Inergize Cold Plunge Tub is IPX4-rated, meaning it's splash-resistant and safe for outdoor use.

  • Best setup: Place in shade or shelter for better efficiency and longer lifespan.
  • Cold climates: If temperatures drop below 33°F, drain and store to prevent freezing damage.

It cools about 6-7F per hour when ambient is at 65F. It will take about 4-5hrs to get cold enough to plunge.

The pro has a 0.8HP chiller so works great in hot climates, if in temperatures >100F the water temperature might tick up slightly.

Check out this chart.
  • Whisper-quiet when maintaining temperature.
  • During active cooling/heating: Runs at ~60 decibels (about as loud as a quiet conversation or small portable AC unit).

In 7 business days if shipped, 1 business day if picking up.

Your Refurbished Inergize Cold Plunge Tub comes with 90 day manufacturer's warranty.

$1/day - Much cheaper than daily ice runs or inefficient chillers.

Absolutely. We’ve engineered the Inergize Eco with an inbuilt pump, quick-connect hoses—no clamps, tape or leaky DIY. 

No tools, no hassle:
1. Inflate the tub using the included air pump.
2. Connect hoses to the chiller.
3. Fill with water and power it on—ready to go!

Check out our setup tutorial videos here.
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Chiller Pro: Built to Last. Designed to Perform.

Tub: Compact. Durable. Built for Life.

Effortless Setup in Just 15 Minutes

Step 1: Inflate, connect hoses, fill with water, and plug in—no tools needed.

Step 2: Power on, sync with the Inergize app, and set your ideal temp and schedule.

Step 3: Step in and feel the reset—boost strength, clarity, and recovery.

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Included Bonus Items

Each Inergize Cold Plunge includes $500 in free accessories

Inflatable & Insulated Cover
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4 inches of air insulation and lockable buckles, enjoy debris-free, child-safe setup—without any rainwater collection.
Backpack
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Easily transport and carry your cold plunge tub anywhere.
Dual Action Hand Pump
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Inflate your tub in under 15 minutes with our double action pump.

As Featured In…

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"It has a oval, short, deep design that has a small footprint and doesn’t take up as much space as other tubs."
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“Inergize is the best portable cold plunge. Its water lasts up to 6-months with just 5 min of maintenance per week.” 
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“More portable, powerful and 2 degrees colder than other plunges at higher price points.”
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“This is one of our favorite cold plunges on the market. High-quality and works well in tight spaces.”
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“Inergize Ice bath is the optimal mix of portability, style, and cutting-edge technology.”

5.0
Rated 5.0 out of 5 stars
Based on 110 reviews
Total 5 star reviews: 109 Total 4 star reviews: 0 Total 3 star reviews: 1 Total 2 star reviews: 0 Total 1 star reviews: 0
99%would recommend this product
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110 reviews
  • SC
    Sal C.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    5 days ago
    Great Product!

    I purchased the Inergize Cold Plunge – Elite Tub, and I can honestly say it has been life-changing. The quality of this system far exceeded my expectations, especially for the price point.

    The chiller is extremely well built and thoughtfully designed. The WiFi features make it easy to control temperature and timing right from my phone. The built-in ozone system, strong water flow, and internal filtration give me total confidence in cleanliness and performance. This is clearly a high-quality unit built to last.

    The tub itself is outstanding—very sturdy, well constructed, and large enough for full-body immersion with ease. Getting in and out is simple, and it feels solid and secure every time I use it.

    As a retired member of the armed forces dealing with PTSD and TBI, this investment has helped me tremendously—both mentally and physically. I’ve experienced improved mood, better stress regulation, reduced inflammation, and an overall sense of mental clarity and resilience. Cold plunging has become a vital part of my daily routine.

    I genuinely cannot believe I was able to get such a high-quality product at such a good price. I highly recommend the Inergize Elite Tub to anyone looking to improve recovery, mental health, and overall well-being. This is a great product, and I’m extremely thankful for it.

    Was this helpful?
  • NG
    nickolas g.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 months ago
    This thing is great!

    I use it everyday, I love it and it works great !

    Was this helpful?