SaunaLife Model S6B/S6N Soak-Series Home Wood-Burning Hot Tub, Up to 7 People
The SaunaLife Model S6 is a luxury wood-burning hot tub built for the way people actually use a backyard. Up to 7 bathers, 436 gallons of water, no electricity required, and one of the fastest heat-up times in the wood-fired category. It arrives fully assembled in your choice of finish, S6N (Natural Thermo-Spruce) or S6B (Black-stained Thermo-Spruce), and starts working the moment you fill it and light the stove.
Premium Thermo-Spruce, twice the lifespan of cedar
The exterior is built from durable Thermo-Spruce wood with a 1.65" thick surround, a thermally treated Northern European softwood that lasts up to 2X longer than cedar. Choose the warm natural Thermo-Spruce finish (S6N) for a classic Scandinavian look, or the sophisticated black-stained finish (S6B) for a modern, architectural feel. Both versions deliver identical thermal performance and durability outdoors.
304 stainless steel stove, fast heat-up
At the core of the system is a 304 stainless steel wood-burning heater with dual heat compartments and a self-cleaning corrugated stove design. The result is real efficiency: heat transfer is improved, wood consumption drops by up to 50%, and the tub heats in roughly 1/3 of the time of traditional wood-fired models. From cold to soak temperature takes under 2 hours.
436 gallons, ergonomic for 7 bathers
The interior uses a thick contoured fiberglass insert in dark grey that contours to the body for genuine soaking comfort. With 436 gallons of water capacity and seating for 7, the S6 works equally well for family soaks, evenings with guests, or solo recovery sessions. Ergonomic seating means no awkward shifting to find a comfortable position.
No electricity, ready out of the box
The S6 needs no electrical connection, no plumbing connection, and no contractor for the cabin itself. It ships fully assembled with matching Thermo-Spruce stairs, a polished stainless steel chimney, an insulated folding cover with marine-grade vinyl exterior, and a built-in drainage tap. Position the tub, install the chimney, fill the tub, light the stove, and you're soaking.
Luxury wood-burning hot tub for up to 7 bathers, in your choice of finish (S6N Natural or S6B Black). Premium Thermo-Spruce construction lasting 2X longer than cedar, 436-gallon ergonomic fiberglass interior, 304 stainless steel stove that heats in under 2 hours, and zero electricity required. Ships fully assembled with stairs, chimney, insulated cover, and drainage all included.
Wood-burning hot tub Up to 7 persons Natural or Black finish Premium Thermo-Spruce No electricity required 436 gallon capacity Heats in under 2 hours Authorized SaunaLife dealer
Specifications
Dimensions & capacity
| Exterior dimensions |
89" diameter × 40.2" H (226.1 × 102.1 cm) |
| Interior dimensions |
80.7" diameter × 35.4" H (205 × 89.9 cm) |
| Water capacity |
436 gallons (1,650.4 L) |
| Capacity |
Up to 7 persons |
| Maximum temperature |
106°F (41.1°C) |
| Weight (filled) |
3,064 lbs (1,389.8 kg) |
Construction & materials
| Exterior |
Premium Thermo-Spruce (1.65" thick) |
| Interior |
Contoured fiberglass (dark grey) |
| Stairs |
Matching Thermo-Spruce, included |
| Cover |
Insulated folding, marine-grade vinyl |
| Drainage |
Built-in tap |
| Origin |
Handcrafted in Northern Europe |
| Wood lifespan |
Up to 2X longer than cedar |
Wood-burning stove
| Material |
304 stainless steel |
| Stove dimensions |
19.8"W × 11.8"D × 13.1"H |
| Design |
Dual heat compartments, self-cleaning corrugated |
| Heat-up time |
Under 2 hours (1/3 of traditional models) |
| Wood efficiency |
Up to 50% less wood consumption |
| Maximum wood length |
16" (40.6 cm) |
| Chimney |
Polished stainless steel, 106.3" (270 cm) tall |
Available finishes
| Natural finish |
Model S6N (Thermo-Spruce natural) |
| Black finish |
Model S6B (Thermo-Spruce black) |
| Construction |
Identical between both finishes |
Shipping & installation
| Configuration |
Fully assembled |
| Shipping dimensions |
93"W × 47.2"D × 94.5"H |
| Shipping weight |
728 lbs (330.2 kg) |
| Installation type |
Outdoor |
| Electrical requirements |
None |
| Model / SKU |
S6N or S6B |
What's included
SaunaLife Model S6 hot tub (fully assembled)
Premium Thermo-Spruce surround (1.65" thick)
Contoured dark grey fiberglass interior
304 stainless steel wood-burning stove
Polished stainless steel chimney
Chimney protective cap
Matching Thermo-Spruce stairs
Insulated folding cover
Marine-grade vinyl cover exterior
Built-in drainage tap
Installation manual
Warranty documentation
Why the SaunaLife S6 stands out
Choose your finish
Same premium tub, two distinct looks. S6N delivers the warm natural Thermo-Spruce grain. S6B offers a sophisticated black-stained finish for modern outdoor spaces.
Premium Thermo-Spruce
Thermally treated Northern European spruce that lasts up to 2X longer than cedar. The 1.65" thick surround provides exceptional insulation for outdoor use.
No electricity required
Wood-burning operation means no electrical hookup, no plumbing, no contractor for the cabin. Position it anywhere outdoors with stove clearance and you're ready.
304 stainless steel stove
Dual heat compartments and a self-cleaning corrugated design improve efficiency. Heats in under 2 hours and uses up to 50% less wood than traditional stoves.
Up to 7 bathers
436-gallon capacity with ergonomic seating means real comfort for the whole family or a group of friends, not just two people squeezed in shoulder-to-shoulder.
Fully assembled delivery
Arrives ready to use with stairs, chimney, insulated cover, and drainage built in. No carpentry, no DIY, no contractor required for the tub itself.
About SaunaLife
European craft, American design
Designed in the U.S., crafted in Northern Europe
SaunaLife was founded by sauna and wellness enthusiasts who wanted to make premium-quality home wellness more accessible. Partnering with Nordic innovators, they leverage Scandinavian design, sustainable materials, and traditional construction techniques to deliver products that actually last. The S6 brings that same philosophy to wood-burning hot tubs.
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Two finish options, S6N (Natural) or S6B (Black)
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Premium Thermo-Spruce, lasts up to 2X longer than cedar
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304 stainless steel stove, dual chambers, fast heat-up
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Ergonomic fiberglass interior, contoured for real comfort
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Limited Lifetime warranty, backed by the manufacturer
About SaunaLife
Wood-fired soaking, the way it should be
SaunaLife uses sustainably sourced, thermally treated Northern European wood across the entire product line, the same standard they apply to their flagship saunas extends to the SOAK Series tubs. Every S6 is precision-crafted before it leaves the factory and built to handle outdoor conditions for years with minimal maintenance.
The result is a wood-burning hot tub that sits naturally in a backyard, deck, or wooded property, looks intentional rather than industrial, and delivers the kind of slow, traditional soaking experience that electric hot tubs can never quite match.
Manuals & Documents
Everything you need before and after installation
Download the official SaunaLife S6 documentation below. Review the installation manual before delivery so you understand the chimney installation and stove operation. The tub itself ships pre-assembled, but the chimney requires installation onto the stove before first use.
Installation & Dimensions
Warranty
Warranty
SaunaLife Limited Lifetime Warranty
Every SaunaLife Model S6 (S6N or S6B) is backed by SaunaLife's Limited Lifetime Warranty on the tub's structural integrity and craftsmanship for residential use, the highest level of protection available in the category. The 304 stainless steel stove is covered under its own manufacturer warranty terms. All warranty claims go directly through SaunaLife with full factory support. Proof of purchase from an authorized dealer is required to start any claim, and we are an authorized SaunaLife dealer. See the official warranty document above for full terms.
