Hot & Cold Plunges

TUNDRA's hot and cold plunges replace ice with a chiller — the Borealis cools your water to 3°C and heats it to 42°C on demand, holds temperature, and keeps the same water clean for weeks. No restocking ice. No compromising on temperature. Plug in, set your target, and step in.

Every TUNDRA plunge works the same way: a tub of your choice — inflatable, solid acrylic, or cedar — paired with the Borealis chiller and heater. The Borealis connects via quick-release hoses, runs on a standard 13A or 16A socket, and maintains temperature through ozone treatment and a 20-micron cartridge filter. Set it cold for a cold plunge or warm for a hot soak. Switch between the two by adjusting the target temperature.

Choosing between inflatable and solid: Inflatable tubs set up in minutes, pack away flat, and are the practical choice for rentals, events, and smaller spaces. Solid tubs — in acrylic, stainless steel, or cedar — are a permanent installation with better insulation and a premium finish. Both perform identically with the Borealis. Both are delivered and set up by TUNDRA across Singapore.

For maximum recovery benefit, pair a cold plunge with a sauna. Alternating heat and cold — contrast therapy — activates the body's vascular response more completely than either alone. TUNDRA supplies both sides of that setup, delivered and commissioned in Singapore.