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SaunaLife
SaunaLife Model S4B/S4N Wood-Fired Hot Tub
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Estimated Ship Date:
Dec 20, 2025
-
Dec 26, 2025
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SaunaLife Model S4B/S4N Wood-Fired Hot Tub
- 694000
- 664000
SaunaLife SOAK-Series S4 Wood-Burning Hot Tubs
Eco-Luxury Outdoor Hot Tubs — Scandinavian Craftsmanship, No Electricity Required
The SaunaLife SOAK-Series Model S4 is the pinnacle of traditional hot water bathing — no cords, no noise, just pure wood-fired immersion. Crafted in Northern Europe and designed for year-round comfort, these fully assembled outdoor hot tubs feature durable Thermo-Spruce exteriors, ergonomic fiberglass interiors, and an ultra-efficient dual-chamber stove that delivers fast, even heating with up to 50% less wood.
Why Choose the SaunaLife S4 Series?
- Efficient Wood-Fired Heating: Heats 304 gallons of water in just 1.5–2 hours with no electricity required
- Dual-Chamber 304 Stainless Steel Stove: Captures smoke heat in a secondary chamber to minimize fuel use
- Ergonomic Fiberglass Interior: Contoured seating and smooth marine-grade surface for comfort and easy cleaning
- Thermo-Spruce Exterior: Naturally weather-resistant and thermally efficient — lasts up to 2X longer than Cedar
- Self-Circulating Heat Flow: Draws cooler water through a bottom channel and redistributes it through an upper channel
- Fully Assembled Delivery: Arrives ready to enjoy — no setup, no wiring, just fill and fire
Specifications
| Model | S4B (Black) | S4N (Natural) |
|---|---|---|
| Exterior Finish | Painted Black Thermo-Spruce | Natural Thermo-Spruce |
| Interior Dimensions | 71" Diameter x 33" Deep | |
| Exterior Dimensions | 79" Diameter x 37" High | |
| Water Capacity | 304 Gallons | |
| Heater Material | 304 Stainless Steel | |
| Stove Dimensions | 19.8"L x 11.8"W x 13.1"H | |
| Chimney Dimensions | 95"H x 4.7" Diameter | |
| Maximum Wood Length | 16" | |
| Maximum Water Temperature | 106°F | |
| Product Weight (filled) | 3,064 lbs | |
| Shipping Dimensions | 91"L x 46"W x 87"H | |
| Shipping Weight | 595 lbs | |
Downloads
What’s Included
- Fully assembled Thermo-Spruce hot tub (Black or Natural)
- Contoured fiberglass liner
- 304 Stainless steel dual-chamber wood-burning stove
- Polished stainless steel chimney with cap
- Thermo-Spruce access steps
- Integrated water drainage tap
- Steel-reinforced insulated foam cover with marine-grade vinyl exterior
Designed for Performance, Built for Life
With rapid heat-up, zero electrical requirement, and materials engineered to last, the SaunaLife S4 Series is the ultimate expression of sustainable hot water therapy. Whether in black or natural finish, each model offers timeless Scandinavian elegance and industry-leading efficiency — no setup required.
Live the SaunaLife.
