Black, Up to 6 Persons
Exterior dimensions – 79" diameter and 37” high
Interior dimensions – 71" diameter and 33” deep
Model S4B Outdoor Wood-Burning Hot Tub
The SaunaLife SOAK-Series Model S4B represents the pinnacle of quality, efficiency, and luxury in wood-burning hot tubs, designed to elevate your outdoor experience.
Ready for Your Hot Tub Party
The Model S4B wood-fired hot tub arrives fully assembled and is incredibly easy to set up. Its ergonomically shaped fiberglass tub ensures comfort for up to six people, providing a spacious interior that holds over 304 gallons of soothing water. The interior surface is easy to clean, while the exterior features durable Thermo-Spruce materials that are engineered to last up to twice as long as traditional cedar.
- Thermo-Spruce materials: Provides superior durability and longevity.
- Luxury outdoor design: Perfect for an ergonomic bathing experience.
- Eco-friendly: Requires no electricity, making it a sustainable choice.
- Thick dark grey contoured fiberglass lining: Enhances bather comfort.
The stainless steel wood-burning heater, with its dual heat compartments, ensures unmatched efficiency. It boasts a rapid response heat-up time, raising water to ideal temperatures in under two hours. Crafted from 304 stainless steel, the heater is both robust and reliable, complemented by a polished stainless steel chimney for added protection.
Engineered for Efficiency and Performance
This hot tub features a durable Thermo-Spruce tub surround (1.65” thick), providing superior thermal resistance to retain heat effectively. Matching Thermo-Spruce wood steps offer easy access, while the extra-thick, steel-reinforced foam cover folds easily for storage. A dark grey marine-grade vinyl exterior enhances its durability, and an integrated drainage tap ensures maintenance is straightforward.
Innovative Heating Technology
Designed and handcrafted in Northern Europe, the S4B is engineered for efficiency and performance. This hot tub heats water in a third of the time compared to traditional wood-fired options. Its ingenious self-cleaning corrugated stove includes a secondary chamber that maximizes heat transfer from smoke, significantly reducing wood consumption by up to 50%. The design allows for super-heated air between the fiberglass lining and wood exterior, accelerating the heating process. Cool water is drawn in through a lower channel and redistributed through an upper channel to ensure an even temperature throughout.
Start Enjoying Sooner
This exceptionally efficient wood stove will heat 304 gallons of water from 40°F (5°C) to 95°F (35°C) in just 1.5 to 2 hours, making it the fastest-heating wood-burning hot tub available. Relax and enjoy the luxury of your Model S4B backyard wood-burning hot tub from SaunaLife, perfect for sharing memorable moments with friends and family.
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