Compare products
SaunaLife Model S4B 6-Persons Soak-Series Home Wood-Burning Hot Tub
by SaunaLife
Payment & Security
Payment methods
Shop with confidence - your transactions are SSL-encrypted and your payment details are securely transmitted.
We never store or have access to your credit card information.
SaunaLife Model S4 wood-burning outdoor hot tub for up to 6 people
The SaunaLife S4 is a Soak-Series wood-burning hot tub that seats up to 6 people and arrives fully assembled. It holds 304 gallons in an easy-clean fiberglass liner inside a thermally enhanced spruce exterior, and it needs no electrical connection. A 304 stainless steel stove with a secondary heat chamber heats the water; SaunaLife states it takes 1.5 to 2 hours to heat 304 gallons from 40°F to 95°F.
Best for: Outdoor spaces where you want a wood-fired hot tub for a group and have no power at the tub site.
Specifications at a glance
- Capacity: Up to 6 people, 304 gallons
- Heating: Wood-burning 304 stainless steel stove, no electrical connection required
- Heat-up time (manufacturer): 1.5 to 2 hours from 40°F to 95°F
- Exterior: Thermally enhanced spruce (Thermo-Spruce), black or natural brown
- Liner: Thick dark grey contoured fiberglass
- Tub surround: Thermo-Spruce, 1.65 in thick
- Cover: Steel-reinforced, foam-insulated folding cover with dark grey marine-grade vinyl
- Weight (filled): 3,064 lb
- Shipping: 91 x 46 x 87 in, 595 lb
- Included features: Steps, drainage tap, stainless steel chimney with cap
Space, power and setup
At about 3,064 lb filled, the tub needs a level, strong base; follow SaunaLife's installation manual. Because it burns wood, check local fire and zoning rules, clearances to structures and your homeowners association before you order. No electrical connection is required for heating. Measure gates, doorways and the route to the site before delivery.
Questions buyers ask
Does the S4 need electricity?
No. SaunaLife states that the wood-burning stove needs no electrical connection.
How long does it take to heat?
SaunaLife states it heats 304 gallons from 40°F to 95°F in 1.5 to 2 hours. Actual times vary with starting water temperature, weather and the wood you burn.
What is included?
SaunaLife lists the fully assembled tub, steps, an insulated cover, a drainage tap, and a stainless steel chimney with cap. Please confirm the exact package with our team.
What should I expect from delivery?
Curbside delivery is free within the continental U.S. Optional White Glove delivery is available and priced at checkout follow-up.
Helpful guides
Spas | SaunaLife collection | Cold and hot plunge tubs
Not sure which size or configuration fits your space? Call 1-762-214-2594 (Mon-Sun 9am-9pm EST) or request a quote, and our product specialists will help you compare options and plan delivery and installation.
Intended for general wellness use, following the manufacturer's instructions. Not intended to diagnose, treat, cure, or prevent any disease or medical condition. Results vary. Hot water immersion is not suitable for everyone; talk with a healthcare provider first, never soak alone, and keep children away from the stove and chimney.
- Seats up to 6 people, 304-gallon capacity
- Arrives fully assembled
- Wood-burning 304 stainless steel stove, no electricity required
- Self-cleaning corrugated stove with secondary heat chamber
- Heats 304 gallons from 40°F to 95°F in 1.5 to 2 hours (manufacturer figure)
- Thermally enhanced spruce exterior with 1.65 in surround
- Easy-clean contoured fiberglass liner
- Insulated folding cover, steps and drainage tap included
- Polished stainless steel chimney with cap
| Brand | SaunaLife |
|---|---|
| Series | Soak |
| Model | S4 |
| Type | Wood-burning outdoor hot tub |
| Capacity | Up to 6 people |
| Water capacity | 304 gallons |
| Heating | Wood-burning 304 stainless steel stove |
| Electrical | None required |
| Heat-up time (manufacturer) | 1.5 to 2 hours from 40°F to 95°F |
| Exterior | Thermally enhanced spruce, black or natural brown |
| Tub surround | Thermo-Spruce, 1.65 in thick |
| Liner | Dark grey contoured fiberglass |
| Cover | Steel-reinforced foam-insulated folding cover, dark grey marine-grade vinyl |
| Weight (filled) | 3,064 lb |
| Shipping weight | 595 lb |
| Shipping dimensions | 91 x 46 x 87 in |
| Assembly | Arrives fully assembled |
| Warranty | SaunaLife limited lifetime warranty on sauna environments (confirm hot tub coverage with manufacturer terms) |
- ## The hot tub
- SaunaLife S4 tub, fully assembled
- Wood-burning 304 stainless steel stove
- Matching Thermo-Spruce steps
- Insulated folding cover
- Drainage tap
- ## Chimney
- Polished stainless steel chimney
- Chimney cap
Shipping & Delivery: Most orders ship free within 1-2 business days via curbside delivery. Need it brought inside and set up? Choose White Glove Delivery at checkout and our team will follow up with pricing and scheduling.
Warranty: Warranty coverage varies by manufacturer and product. Contact our team before purchase for the specific warranty terms on this item, or reach out any time after your purchase with a manufacturer defect concern — we'll help you through the process.
Product manuals, installation guides, and spec sheets for this item are available on request. Contact our product specialists and we'll send you the documentation.
Here is what ships with this model. Everything in the checklist is included in the price; anything marked Optional is not included unless you add it.
The hot tub
- SaunaLife S4 tub, fully assembled
- Wood-burning 304 stainless steel stove
- Matching Thermo-Spruce steps
- Insulated folding cover
- Drainage tap
Chimney
- Polished stainless steel chimney
- Chimney cap
Not sure which configuration you need? Call 1-762-214-2594 and our team will confirm exactly what arrives with your order.