Concentrated Calm.
Most Affordable Quietest Chiller For Cold Plunge
The ultimate 1/2 HP cold plunge engine. Engineered for therapeutic silence at a near-silent 45dB, this ultra-compact unit features a powerful, eco-friendly R290 refrigerant and a professional 3-stage Purity-Flow filtration system. High performance, zero distraction.
The Most Affordable, Near-Silent, and Convenient Chiller in its Class.
Near-Silent 45dB
3-Stage Pro Purity
Smart App Control
Ultra-Compact
2-Year Warranty
Original price was: $1,800.00.$1,500.00Current price is: $1,500.00.
Get it by Apr 16 - Apr 29.
Free shipping.
2-Year Full Warranty
Free U.S. Shipping
100-Day Risk-Free Trial
- Cooling Power: 1/2 HP
- Min. Temperature: 34°F
- Noise Level: <45 dB
- Refrigerant: R290 (Eco-Friendly)
- Filtration: 3-Stage (Pro Filter + Ozone)
- Connectivity: Wi-Fi & App
- Dimensions: 16.2" × 13.6" × 15"
- Weight: 55 lbs (25 kg)
- 1/2 HP StillPlunge Mini Chiller Unit
- Industrial-Grade Hoses & Quick-Connects
- Complete 3-Stage Filtration System (1x 20" Filter pre-installed)
- Grounded Power Cable
- Comprehensive User Manual
Fast, Free Shipping
- Free Shipping to the continental U.S.
- (3-9 business day transit).
Zero-Risk Return Policy
100-Day At-Home Trial. If you don't love it, return it for a full refund. ZERO restocking fees.
Trusted By Athletes In
Engineered for Silence. Redefined.
Standard chillers disrupt your sanctuary with noise. This auditory distraction keeps your nervous system in a state of stress. Our proprietary Serenity-Drive™ in the Mini Chiller operates at a near-silent 45dB. This is therapeutic silence, creating the optimal environment for your body to shift from stress to profound calm. Silence isn't a feature; it's the function.
Unmatched 3-Stage Purity.
Full-size filtration in a mini-unit.
Our revolutionary 3-stage Purity-Flow™ system redefines compact filtration.
1. Pre-Filter: Captures large debris like hair and dust.
2. Pro-Grade Filter: A massive 10-inch 20-micron filter cartridge—the same size used in units twice as large—traps fine particles.
3. Ozone Control: A powerful, Ozone generator (with controllable concentration) neutralizes 99.9% of contaminants.
Best of all, filter changes take 60 seconds via an easy-access twist-off cap. No tools, no hassle.
Efficient. Powerful. Eco-Friendly.
Near-freezing 34°F powered by R290.
Don't let the size fool you. This 1/2 HP unit efficiently chills water to a bone-deep 34°F. It's the king of single-cooling systems, using an eco-friendly R290 refrigerant that boasts a near-zero Global Warming Potential (GWP) and dramatically reduces energy consumption. It's high performance without the high power bill.
Total Control. Now with Ozone.
Your personal recovery hub.
From anywhere in the world, use our Wi-Fi app to schedule a plunge at a crisp 34°F . Plus, for the first time, you can dial in your perfect water purity by adjusting the ozone concentration directly from the app. Its near-silent, all-weather design delivers the perfect plunge, effortlessly and on your terms.
The StillPlunge Advantage
Engineered for performance, designed for stillness. See how we stack up.
StillPlunge Mini
Concentrated Calm
Other Brands
The Common Standard
Efficient 34°F Cooling
Cooling Power
Often just 39°F or higher
Near-Silent (45 dB)
Noise Level
Loud & Distracting (55dB+)
Wi-Fi App & Scheduling
Smart Control
Manual controls only
3-Stage: Full-Size Filter + Ozone
Water Purification
Basic or no filtration
All-Weather IPX4 Casing
Durability
Not rated for outdoor use
Eco-Friendly R290
Refrigerant
High-GWP Refrigerants
Why StillPlunge Mini?
We obsessed over every detail, so you can focus on your stillness.
Efficient 34°F Cooling
Our 1/2 HP compressor with eco-friendly R290 refrigerant delivers a consistent 34°F with minimal power usage.
Near-Silent 45dB Operation
Our proprietary Serenity-Drive™ system operates at just 45 dB, ensuring your plunge is a meditative experience, not a noisy one.
Advanced 3-Stage Purity
A full-size 10-inch 20-micron filter, pre-filter, and controllable ozone keep your water crystal-clear for weeks.
Intuitive Smart Control
Use our Wi-Fi app to set your temperature remotely, create schedules, and even adjust the ozone concentration.
Easy Maintenance
The smallest, most powerful chiller in its class. Features an easy-access side panel with a twist-off cap for 60-second filter changes. No tools needed.
Built to Last
Constructed with industrial-grade components and housed in an all-weather IPX4 casing, protected by a comprehensive 2-year warranty.
More Than The Cold
Unlock profound benefits for your mind, body, and spirit. Your daily practice is a gateway to a new state of being.
The Complete Stillness System
The ultimate recovery sanctuary.
Combine our ultra-quiet Mini Chiller with a premium tub for a seamlessly integrated, plug-and-play experience.
View The Complete System
Technical Specifications
Cooling Capacity1/2 HP Compressor
Minimum Temperature34°F
Operational Noise<45 dB
Dimensions (LWH)413mm × 345mm × 382mm (16.2" × 13.6" × 15")
Weight25 kg (55 lbs)
RefrigerantR290 (Eco-Friendly)
Power110-120V / 60Hz
ConnectivityWiFi (2.4GHz), Bluetooth
Filtration System3-Stage: Pre-Filter, 10" 20-Micron Cartridge, Controllable Ozone
Frequently Asked Questions
Performance & Capability
How cold can the Mini Chiller actually get the water?
Our 1/2 HP Mini Chiller is a dedicated cooling powerhouse, capable of cooling the water down to a near-freezing 34°F. It's engineered to deliver this temperature consistently and efficiently, even in warm ambient conditions, thanks to its high-efficiency compressor and smart technology.
What is R290 refrigerant and why is it better?
R290 is a highly pure, eco-friendly refrigerant. It has a significantly lower Global Warming Potential (GWP) of just 3, compared to older refrigerants (like R410a) which can have a GWP of over 2,000. It's also incredibly energy-efficient, which is how our Mini Chiller achieves such low power consumption while maintaining powerful cooling.
Does this unit also have a heating function?
The StillPlunge Mini is a dedicated cooling-only unit. By focusing exclusively on being the "king of single cooling," we've engineered it to be smaller, quieter, and more energy-efficient than any dual-temperature model on the market. It's built for those who demand the best cold plunge experience.
What are the exact dimensions, weight, and power requirements?
Here are the key technical specifications for our 1/2 HP Mini Chiller:
- Dimensions (LWH): 413mm × 345mm × 382mm (16.2" × 13.6" × 15")
- Weight: 25 kg (55 lbs)
- Power Supply: Plugs into a standard 110-120V / 60Hz grounded wall outlet.
- Operational Noise: Near-silent, operating at less than 45 dB.
Water Purity & Maintenance
How does the chiller keep the water clean? This 3-stage system sounds new.
It uses our most advanced Purity-Flow™ 3-Stage System, which delivers professional-grade filtration in a compact body.
1. Pre-Filter: An initial mesh filter catches large debris like hair and leaves before they enter the system.
2. 10-inch Pro Filter: This is the core of the system. A full-size 10" x 2.5" 20-micron filter cartridge—not a tiny, ineffective one—traps fine particles, oils, and contaminants.
3. Controllable Ozone: An integrated, high-output Ozone generator neutralizes 99.9% of bacteria. You can adjust its concentration and schedule via the app for perfect water purity.
How often do I need to change the filter?
Because we use a full-size 10-inch cartridge, the filter lasts much longer. We recommend changing the water every 4-6 weeks and replacing the filter cartridge every 2-3 months, depending on usage.
Replacement is incredibly simple: just twist off the filter cap on the side of the unit, swap the old cartridge for a new one, and twist the cap back on. It takes less than 60 seconds. Replacement filters are affordable and available on our website.
Setup & Warranty
Can I use this chiller with any ice bath tub?
Yes. Our chiller is equipped with universal 3/4" quick-connect fittings and flexible hoses, making it compatible with virtually any cold plunge tub on the market, including our own, as well as inflatable models, acrylic tubs, and wooden barrels.
What kind of warranty is included?
Your investment is protected by our comprehensive 2-year manufacturer's warranty. This covers any defects in materials and workmanship for all core internal components. Should you encounter any issues, our dedicated customer support team is ready to assist you.
Our Ironclad Promise
No fine print. No hidden agendas. Just straightforward, customer-first protection for your investment. This is the StillPlunge commitment.
Our Promise is Simple and Fair:
- Your Trial Starts on Arrival: Your 100-day clock begins the moment your system is delivered, not when you order.
- A Truly Full Refund: If it's not for you, you get back every penny. No hidden "restocking fees," period.
- No-Box, No-Problem: We handle returns simply. No need to keep the original bulky packaging.
The StillPlunge Difference:
Many companies complicate returns with confusing terms. Our policy is designed with one goal: your complete peace of mind. We believe you should have ample time to feel the benefits in your own home, without worrying about hidden costs or strict conditions.
What Full-Coverage Means to Us:
- Bumper-to-Bumper Protection: We cover the entire system—chiller, tub, and all core components—against manufacturing defects.
- Replace, Not Just Repair: For any major component failure, our policy is to replace the unit to get you back to your routine faster.
- We Cover All Costs: In the rare event of a warranty claim, we handle all associated shipping costs. No expense to you.
The StillPlunge Difference:
Our warranty is as robust as our engineering. We avoid confusing loopholes like "normal wear and tear" for core functions. We built it to perform, and we back that promise with clear, comprehensive support.
What Our Customers Say
4.8
Based on 8 reviews
100%
would recommend these products
Filter by Rating
Filter by Content
8 reviews for Most Affordable Quietest Chiller For Cold Plunge
The Ultimate Investment in Yourself.
Stop piecing together your recovery. Get the complete, seamlessly integrated system designed to deliver the most profound results, at the best possible value.
Jen L. (verified owner) –
So easy to set up. I was worried about the tech, but the app connected on the first try. I set a schedule for 6 AM. I wake up, and my 38F water is just waiting for me. Love it.
Rob G. (verified owner) –
Great little chiller. The size is perfect. My one wish is that it had a heat function. I knew it didn’t when I bought it, but I find myself wishing I could do contrast therapy. But as a pure cold chiller, it’s 5-star.
Kate H. (verified owner) –
I’m all about energy efficiency. The R290 refrigerant was a big selling point for me. My power bill barely changed. It’s small, efficient, quiet, and powerful enough for a deep, healing cold. What more do you need?
Mikey B. (verified owner) –
The 3-stage filtration is no joke. The 10-inch filter is huge! I’ve had the same water in my tub for 4 weeks and it’s still perfectly clear. Changing the filter is also way easier than my old unit. Just twist the cap. Brilliant.
Samantha R. (verified owner) –
This. Thing. Is. QUIET. I can’t stress this enough. I have it indoors in my home gym, 10 feet from my desk. I literally cannot hear it running. It’s amazing. Keeps my tub at a steady 37F.
Daniel K. (verified owner) –
Great compact chiller, super quiet. 4 stars because it doesn’t get down to 32F. The lowest I’ve seen is 34F. For me, that’s totally fine, but don’t buy this if you’re expecting to make ice. For a 34-37F plunge, it’s perfect and sips energy.
Jessica W. (verified owner) –
I’m shocked this little thing has a 10-inch filter AND ozone. The water has been crystal clear for 3 weeks and counting. The app control is a feature you usually only find on units twice this price. Amazing value.
Eric J. (verified owner) –
This MINI chiller is the one. My #1 concern was noise as I live in a condo. This thing is literally SILENT. My fridge is louder. It’s small, looks clean, and keeps the water at 34-35 degrees no problem. Doesn’t have heat, but I don’t care. Perfect for what I need.