Shipping: Flat-rate freight shipping of
$950 applies to delivery within the contiguous United States. Shipping cost is displayed at checkout prior to payment.
Model S4B Outdoor Wood-Burning Hot Tub
The SaunaLife SOAK-Series Model S4B is a fully assembled outdoor wood-burning hot tub designed for residential backyard use. Built for off-grid operation, this unit does not require electricity and is intended for outdoor environments where wood-burning appliances are permitted.
Manufactured in Northern Europe, the Model S4B combines a stainless steel wood-burning heater, a contoured fiberglass interior, and a Thermo-Spruce exterior selected for durability and suitability for outdoor residential environments.
Fully Assembled Outdoor Hot Tub
The Model S4B arrives fully assembled to simplify delivery and placement. The fiberglass interior provides a smooth, non-porous surface and is designed to accommodate up to six occupants. Matching Thermo-Spruce access steps are included.
Wood-Burning Heating System
This outdoor hot tub uses an integrated stainless steel wood-burning stove designed to warm water through direct fire exposure and internal heat transfer. Natural water circulation supports even temperature distribution during operation.
No electrical power is required for operation.
Heating Performance
Heating time varies depending on ambient temperature, starting water temperature, wood type, and operating conditions. Under typical use, the Model S4B is designed to heat approximately 300 gallons of water to a usable water temperature within a few hours using a wood-fired process.
Key Features and Specifications
- Outdoor wood-burning hot tub for residential use
- Fully assembled upon delivery
- Off-grid operation; no electricity required
- Seating capacity for up to six occupants
- Approximate water capacity: 304 gallons
- Contoured fiberglass interior
- Integrated stainless steel wood-burning heater
- Natural water circulation design
- Thermo-Spruce exterior cladding
- Black-painted 1.65 in. Thermo-Spruce surround
- Polished stainless steel chimney with protective cap
- Insulated folding cover with marine-grade vinyl exterior
- Integrated drainage tap
Dimensions
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Exterior: approximately 79 in. diameter × 37 in. high
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Interior: approximately 71 in. diameter × 33 in. deep
Thermo-Spruce Exterior Material
Thermo-Spruce is a thermally modified wood used for outdoor residential products due to its dimensional stability and resistance to moisture exposure. The modification process does not involve chemical treatments.
- Improved dimensional stability for outdoor environments
- Reduced swelling and shrinking compared to untreated wood
- Resistance to moisture and decay
- Suitable for long-term exterior residential use
What’s Included
- Fully assembled Model S4B wood-burning hot tub
- Matching Thermo-Spruce access steps
- Insulated folding cover
- Marine-grade vinyl cover exterior
- Integrated drainage system with tap
- Stainless steel chimney
- Stainless steel chimney cap
Site Preparation and Installation
- Level, stable foundation required
- Clear access from curbside delivery to final placement location
- Chimney clearance and ventilation must be maintained
- Local regulations for wood-burning appliances must be followed
- Customer is responsible for moving the unit from curbside to final location
Due to size and weight, professional placement assistance or equipment may be required.
Shipping and Delivery
- $950 flat-rate freight shipping
- Delivery within the contiguous United States
- LTL freight shipment
- Curbside delivery by scheduled appointment
- Inspect shipment upon delivery for visible damage
Warranty and Authorized Dealer
Prime Regenerate is an authorized dealer of SaunaLife products. Manufacturer-supported warranty coverage applies for residential use when purchased through an authorized reseller.
Disclaimer: This product is intended for residential use only. It is not intended to diagnose, treat, cure, or prevent any medical condition.
