
Kooru Cold Plunge Tub | Handcrafted Redwood | Shou Sugi Ban | Ozone Filtration | 1/4 HP Chiller
Handcrafted redwood cold plunge tub with Shou Sugi Ban finish, built-in ozonator, and programmable chiller
The Kooru Cold Plunge Tub is handcrafted in San Diego from sustainably sourced, hand-selected redwood boards. Each tub is built to order using the Japanese Shou Sugi Ban wood-charring technique, which enhances the wood's natural durability and produces a distinctive depth of color and exposed grain. The system arrives fully assembled and runs on a standard 110V home outlet.
Construction and Materials
- Handcrafted from sustainably and ethically sourced selected redwood
- Shou Sugi Ban finish — each board hand-fired and sanded using traditional Japanese charring method
- High-density polyurethane tub compartment: 36″ L x 24″ W x 30″ H
- Due to the handcrafted nature of each tub, dimensions may vary up to ¼″ in length and width
Chiller and Water System
- 1/4 HP chiller pump — 950 GPH flow rate
- Built-in ozonator for chemical-free water sanitation — ozone (O3) breaks down contaminants and microorganisms without leaving harmful byproducts
- Filter replacement recommended every 1–2 months depending on usage frequency
Specifications
- Exterior dimensions: approximately 64″ L x 34″ W x 35″ H
- Minimum door/passage clearance required: 33″
- Water capacity: approximately 60 gallons
- Weight: approximately 400 lbs
- Power: 350–500W at 3–5 amps | standard 110V plug | GFCI or grounded outlet required
- Fully assembled — no additional setup required














