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SaunaLife Model S4B

Soak-Series Home Wood-Burning Hot Tub, Black, Up to 6 Persons

SKU SL-MODELS4B
Original price $7,999.00
Original price $7,999.00 - Original price $7,999.00
Original price $7,999.00
Current price $6,940.00
$6,940.00 - $6,940.00
Current price $6,940.00

Free shipping. No sales tax (except FL)

Description

The SaunaLife Model S4B delivers premium wood-fired soaking in a pre-assembled package designed for immediate enjoyment. This SOAK-Series hot tub accommodates up to six people in an ergonomically contoured fiberglass basin with easy-to-maintain interior surfaces and weather-resistant spruce exterior construction. Engineering excellence sets the Model S4B apart. Its self-cleaning corrugated stove with secondary heat-recovery chamber reduces wood consumption by up to 50% while heating 304 gallons from 40°F to 95°F in just 1.5 to 2 hours—the fastest performance in wood-fired hot tub category. The dual-channel water circulation system equalizes temperature distribution, while superheated air between the fiberglass and wood layers accelerates the heating cycle. No electrical connection required. Crafted in Northern Europe and optimized for efficiency, the Model S4B combines rapid heat-up times with sustained fuel economy, making it an intelligent choice for year-round backyard relaxation.

Features

Model S4B Outdoor Wood-Burning Hot Tub   

  • Thermo-Spruce materials (lasts up to 2X longer than Cedar)  
  • Luxury outdoor wood-burning hot tub 
  • Designed for outdoor ergonomic hot tub bathing experiences 
  • Arrives fully assembled and no electricity required (eco-friendly) 
  • Spacious interior holds over 304 gallons of pure water bathing pleasure 
  • Thick dark grey contoured fiberglass lining provides enhanced bather comfort 
  • Stainless steel wood-burning heater utilizes dual heat compartments for unmatched efficiency   
  • Rapid response heat-up time prepares water to ideal temperatures in under 2-hours 
  • Wood-burning heater constructed of 304 stainless steel 
  • Polished stainless steel chimney with protection 
  • Durable Thermo-Spruce tub surround (1.65” thick), painted black  
  • Superior thermal resistance (R-value) to retain heat  
  • Matching Thermo-Spruce wood steps for easy access 
  • Extra thick steel reinforced foam cover, folds for ease of removal and storage 
  • Dark grey marine grade vinyl cover exterior 
  • Integrated hot tub drainage tap 
  • Up to 6 bathers 
  • Exterior dimensions – 79" diameter and 37” high  
  • Interior dimensions – 71" diameter and 33” deep 
  • Designed by SaunaLife and handcrafted in Northern Europe 

Thermo-Spruce Material Advantages 

  • Lasts up to 2X longer than Cedar 
  • Superior thermal resistance (R-value) 
  • Eco-friendly 
  • Ideal for water use (stable)  

Includes

Model S4B Outdoor Wood-Burning Hot Tub  

  • Fully assembled hot tub 
  • Steps 
  • Insulated cover  
  • Drainage with tap 
  • Polished stainless steel chimney 
  • Chimney cap 

Specifications

Model

Model S4B

Material

Thermo-Spruce

Interior Dimensions

71" Diameter x 33"D

Exterior Dimensions

79" Diameter x 37"H

Water Capacity

304 Gallons

Product Weight when filled

3064 lbs

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 Temperature

106F

Shipping Dimensions

91"L x 46"W x 87"H

Shipping Weight

595 lbs


Technical

Model S4B Installation Manual

Model S4B Diagram

SaunaLife Sauna Care Guide

SaunaLife Sauna Warranty

Description

The SaunaLife Model S4B delivers premium wood-fired soaking in a pre-assembled package designed for immediate enjoyment. This SOAK-Series hot tub accommodates up to six people in an ergonomically contoured fiberglass basin with easy-to-maintain interior surfaces and weather-resistant spruce exterior construction. Engineering excellence sets the Model S4B apart. Its self-cleaning corrugated stove with secondary heat-recovery chamber reduces wood consumption by up to 50% while heating 304 gallons from 40°F to 95°F in just 1.5 to 2 hours—the fastest performance in wood-fired hot tub category. The dual-channel water circulation system equalizes temperature distribution, while superheated air between the fiberglass and wood layers accelerates the heating cycle. No electrical connection required. Crafted in Northern Europe and optimized for efficiency, the Model S4B combines rapid heat-up times with sustained fuel economy, making it an intelligent choice for year-round backyard relaxation.

Features

Model S4B Outdoor Wood-Burning Hot Tub   

  • Thermo-Spruce materials (lasts up to 2X longer than Cedar)  
  • Luxury outdoor wood-burning hot tub 
  • Designed for outdoor ergonomic hot tub bathing experiences 
  • Arrives fully assembled and no electricity required (eco-friendly) 
  • Spacious interior holds over 304 gallons of pure water bathing pleasure 
  • Thick dark grey contoured fiberglass lining provides enhanced bather comfort 
  • Stainless steel wood-burning heater utilizes dual heat compartments for unmatched efficiency   
  • Rapid response heat-up time prepares water to ideal temperatures in under 2-hours 
  • Wood-burning heater constructed of 304 stainless steel 
  • Polished stainless steel chimney with protection 
  • Durable Thermo-Spruce tub surround (1.65” thick), painted black  
  • Superior thermal resistance (R-value) to retain heat  
  • Matching Thermo-Spruce wood steps for easy access 
  • Extra thick steel reinforced foam cover, folds for ease of removal and storage 
  • Dark grey marine grade vinyl cover exterior 
  • Integrated hot tub drainage tap 
  • Up to 6 bathers 
  • Exterior dimensions – 79" diameter and 37” high  
  • Interior dimensions – 71" diameter and 33” deep 
  • Designed by SaunaLife and handcrafted in Northern Europe 

Thermo-Spruce Material Advantages 

  • Lasts up to 2X longer than Cedar 
  • Superior thermal resistance (R-value) 
  • Eco-friendly 
  • Ideal for water use (stable)  
Includes

Model S4B Outdoor Wood-Burning Hot Tub  

  • Fully assembled hot tub 
  • Steps 
  • Insulated cover  
  • Drainage with tap 
  • Polished stainless steel chimney 
  • Chimney cap 
Specifications

Model

Model S4B

Material

Thermo-Spruce

Interior Dimensions

71" Diameter x 33"D

Exterior Dimensions

79" Diameter x 37"H

Water Capacity

304 Gallons

Product Weight when filled

3064 lbs

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 Temperature

106F

Shipping Dimensions

91"L x 46"W x 87"H

Shipping Weight

595 lbs


About This Delivery

We offer FREE shipping for this item to the contiguous United States.

This item is shipped via LTL Freight on a wooden pallet and requires a scheduled appointment.

  • Prior Contact: Prior to shipping this product, we often contact customers to share shipment details and discuss any extenuating delivery circumstances.

  • Driver Role: The driver is responsible for "curbside delivery only" and will lower the item to ground level.

Mandatory Delivery Requirements

To ensure a successful delivery, someone must be present and the following conditions must be met:

  • Scheduling: The carrier will call ahead to schedule the exact delivery time.

  • Inspection: A signature is required at the time of delivery, and someone must be present to inspect and sign for the shipment.

  • Accessibility: The delivery address must be accessible by a single unit, 3-axle commercial delivery truck.

Curbside Delivery Explained

  • Curbside Only: The carrier is not permitted to move the item onto your property, inside a garage, or into your home. They will only provide limited assistance at the site.

  • Customer Responsibility: Please arrange for your own assistance to move the item from the curb.

Tracking and Timeline

  • Tracking: A tracking number will be emailed to you within 1–2 business days after your order ships.

  • Timeline: The estimated transit time is generally 4–8 business days after shipment.