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The Cold Stoic 3.0

The Cold Stoic 3.0 is Renu Therapy's flagship cold plunge system, offering dual temperature control so you can cool water down to 37°F or heat it up to 104°F for both cold and hot immersion therapy.

It's built with an intuitive touchscreen interface, WiFi app control, and an advanced dual-stage filtration system for cleaner water with minimal maintenance. Handcrafted in Southern California, it's designed for people who want a genuinely premium, low-hassle plunge experience rather than a stripped-down basic tub.

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Key Features

• Powerful 3/4 HP chiller for faster cooling

• App connectivity for remote control

• Enhanced insulation and filtration

• Ozone sanitation system

• Commercial-grade construction

Reviews

"The 3.0 is a beast. The cooling power is incredible—it maintains temperature perfectly even in Texas summer heat. App control is super convenient. This is the cold plunge for people who are serious about their recovery."

About

Renu Therapy

Renu Therapy makes premium cold plunge tubs and saunas designed for real recovery, founded in 2020 after founder Rich discovered the power of cold water immersion following a ski trip.

Every product is built for best-in-class design, reliability, and ease of use, and manufactured in Southern California with an emphasis on quality craftsmanship over shortcuts. The brand's mission is to bring the world's best contrast therapy products — hot and cold — to people looking to recover, perform, and feel better in their everyday lives.