This SaunaLife wood burning hot tub collection features the Soak Series S4N in natural thermo-spruce and S4B in black. Each wood-fired hot tub seats up to 6 people in a smooth, contoured fiberglass basin. You can enjoy a warm soak with no electricity or power hookup. Choose the wood exterior you prefer for an outdoor wood-burning hot tub where you can relax with friends and family.


Meet the SaunaLife wood burning hot tub

The round S4 measures about 81 inches across and holds a little over 300 gallons. This fully assembled hot tub has an exterior of thermo-spruce, the maker's thermally enhanced spruce baked for weather resistance, and a shaped fiberglass basin. It is hand crafted in Northern Europe. Explore the SaunaLife range, all our hot tubs or wood-heated tubs across brands.

How the wood stove heats the water

The stainless steel stove, the maker's wood-burning heater, uses two chambers to draw more heat from the fire and burn less wood. It heats the water to soaking temperature in under two hours without an electrical connection. A tall chimney carries the smoke above your head. Our six-person hot tubs page gathers the other tubs that seat six.

What comes with it, natural or black

The S4 comes with the stove, chimney, matching wood steps, folding insulated cover and drain tap. The S4N pairs natural thermo-spruce with a dark gray basin, and the S4B pairs black thermo-spruce with a black basin. Wood care oils and SaunaLife cleaner are optional on the page. For a cold plunge beside it, see the brand's plunge tubs.

Why buy from My Cozy Outdoors?

We are an authorized SaunaLife dealer, and each listing carries the full manufacturer warranty. We can discuss color and setup by phone. Call us and we will talk it through.

Your S4 questions

How long does a SaunaLife wood fired hot tub take to heat?

The listings say the S4 reaches soaking temperature in under two hours. Its stainless steel stove uses two chambers to draw more heat from the fire and burn less wood. The tub holds a little over 300 gallons.

Does the S4 need electricity?

No, the S4 needs no electricity because burning wood heats the water. You need no power hookup in your backyard or at a cabin. It arrives fully assembled with the stove, chimney, steps, insulated cover and drain tap.

How many people fit, and what comes with it?

The round S4 measures about 81 inches across, with a shaped fiberglass basin for up to six people. It includes the stove, chimney, matching wood steps, folding insulated cover and drain tap. Choose natural thermo-spruce S4N or black S4B for your SaunaLife hot tub.