SaunaLife Model S4B Wood-Fired Hot Tub-Black

Model S4B Outdoor Wood-Burning Hot Tub

The SaunaLife SOAK-Series Model S4 represents the very best in wood-burning hot tub quality, efficiency, and luxury.

Ready for your hot tub party 

The Model S4B wood-fired hot tub arrives completely assembled and is easy to set up. Its ergonomically shaped fiberglass tub is a comfortable place for up to 6 people. The interior surface is easy to clean, and the exterior is crafted from thermally enhanced spruce for superior weather resistance and durability.

Engineered for efficiency and performance 

Engineered and crafted in Estonia, this super-efficient hot tub heats in 1/3 of the time as traditional wood-fired hot tubs. No electrical connection is required. At the heart of the Model S4 is its ingenious self-cleaning corrugated stove with a secondary chamber that transfers heat from the smoke – reducing wood consumption up to 50% compared with other hot tubs. Brilliantly, the air between the fiberglass lining and the wood exterior is super-heated to accelerate the heating process. The stove is cleverly engineered to draw cooler water through a lower channel and redistribute it though an upper channel to equalize the temperature.

Start enjoying sooner 

This incredibly efficient wood stove will heat 304 gallons of water from 40°F (5°C) to 95°F (35°C) in 1.5 to 2 hours – the fastest-heating wood-burning hot tub available.

Relax with friends and family the luxury of your Model S4 backyard wood-burning hot tub from SaunaLife.

SaunaLife combines innovative engineering with meticulous craftsmanship to create spaces that are beautiful, comfortable, and built for a lifetime of enjoyment and good health. The level of quality and attention to detail that goes into each design is off the charts. Hand-crafted in Northern Europe by sauna fanatics, each room is created especially for those who understand and crave the health and wellness benefits of sauna bathing. SaunaLife builds each room as if we were making it for ourselves.

SaunaLife Outdoor Saunas

These innovative rooms provide the ability to enjoy your natural surroundings during each sauna session. Crafted of the highest-grade wood materials, each space is designed to withstand changing weather conditions. The features within each room work in unison to create a comfortable bathing sanctuary that both soothes and invigorates. Select from a variety of sizes and styles of outdoor sauna cabins that best suit your design needs and preferences.

SaunaLife Outdoor Sauna Collection

Barrel Outdoor Saunas

Create a personal backyard sauna sanctuary with SaunaLife outdoor sauna barrels. These innovative spaces provide a relaxing experience steps away from your home. SaunaLife barrel saunas are ergonomically engineered for superior comfort, with contoured seating and arched, and wood slanted backrests. These spaces are available in a variety of sizes and configurations to best suit your bathing needs.

Barrel Sauna Collection

Cube-Series Saunas

Premium quality materials are evident everywhere on Cube-Series Saunas. The exterior wood is made from durable full-length staves that have been organically thermally enhanced. This Thermo-Spruce wood is stronger, more dimensionally stable, naturally resists decay and pests, and will far outlast conventional wood. A complete shingle kit with drip rails ensures superior water management and a dry interior. The bronze-tinted 8mm thick front door is both beautiful and tempered for your safety.

Cube Series Collection

SaunaLife Wood-Burning Hot Tubs

These wood-fired hot tub arrives completely assembled and is easy to set up. Its ergonomically shaped fiberglass tub is a comfortable place for up to 6 people. The interior surface is easy to clean, and the exterior is crafted from thermally enhanced spruce for superior weather resistance and durability.

Wood Burning Hot tubs

SaunaLife Cold Plunges

Pre-assembled for easy installation, the enhanced Thermo-Pine wood exterior will last up to 2X longer than cedar and has superior thermal resistance. The spacious fiberglass tub contoured for the shape of your body has a 200-gallon water capacity to allow you to submerge in comfort. Matching Thermo-Pine stairs make it easy to get in and out of the tub.

Cold Plunges