SaunaLife Model S4B Hot Tub

SaunaLife SOAK-Series Model S4B Outdoor Wood-Burning Hot Tub

Enjoy the perfect backyard spa experience with the SaunaLife SOAK-Series Model S4B Wood-Burning Hot Tub, a premium outdoor hot tub designed for efficiency, durability, and comfort. Crafted in Northern Europe, this high-performance wood-fired hot tub combines traditional heating with modern engineering to deliver faster heating and a luxurious soaking experience.

The Model S4B outdoor hot tub arrives fully assembled, making setup quick and simple. Its ergonomically designed fiberglass interior comfortably seats up to six people, creating the perfect space for relaxing with friends or family. The smooth interior surface is easy to clean, while the exterior is made from thermally enhanced spruce, providing exceptional durability and weather resistance for long-term outdoor use.

At the core of this high-efficiency wood-burning hot tub is an advanced self-cleaning corrugated stove with a secondary heat chamber that captures heat from smoke to maximize efficiency. This innovative heating system reduces wood consumption by up to 50% compared with traditional wood-fired hot tubs while dramatically improving heating speed. The stove circulates water through a specialized channel system that draws cooler water from below and redistributes heated water above to maintain a consistent temperature throughout the tub.

The powerful wood stove heats 304 gallons of water from 40°F to 95°F in just 1.5–2 hours, making it one of the fastest-heating wood-burning hot tubs available. With no electricity required, the Model S4B is ideal for backyards, cabins, outdoor retreats, and off-grid installations. Relax and enjoy the comfort of your own SaunaLife outdoor wood-fired hot tub.

Key Features – 

High-Efficiency Wood-Burning Hot Tub: Advanced stove design captures heat from smoke and reduces wood consumption by up to 50%

Fast-Heating Outdoor Hot Tub: Heats 304 gallons of water from 40°F to 95°F in just 1.5–2 hours

Spacious 6-Person Hot Tub: Ergonomic fiberglass seating provides comfortable space for family gatherings and outdoor relaxation

Durable Outdoor Spa Construction: Thermally enhanced spruce exterior offers excellent weather resistance and long-lasting durability

No Electricity Required: Traditional wood-fired hot tub heating system makes it perfect for off-grid and outdoor installations

Self-Cleaning Corrugated Stove System: Improves heating efficiency while maintaining consistent water circulation

Fully Assembled Outdoor Hot Tub: Easy installation so you can quickly enjoy your backyard spa experience