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The best part of my day!

I use my Infrared Sauna every evening, and it’s honestly the calmest part of my day.

Sara L.

Verified Buyer

Hot Tub - SaunaLife S4N

★★★★★
225 Reviews
Fits 6 People
Units Sold This Month

This premium sauna promotes complete body wellness through gentle, consistent heat therapy. It enhances circulation, supports digestion, and helps flush out toxins for improved internal balance. Regular use refines skin tone and boosts metabolism, aiding in healthy weight management and overall vitality.

Ready for your hot tub party  

The Model S4N wood-fired hot tub arrives completely assembled and is easy to set up. Its ergonomically shaped fiberglass tub is a comfortable place for up to 6 people. The interior surface is easy to clean, and the exterior is crafted from thermally enhanced spruce for superior weather resistance and durability. 

Engineered for efficiency and performance 

Engineered and crafted in the Northers Europe, this super-efficient hot tub heats in 1/3 of the time as traditional wood-fired hot tubs. No electrical connection is required. At the heart of the Model S4 is its ingenious self-cleaning corrugated stove with a secondary chamber that transfers heat from the smoke – reducing wood consumption up to 50% compared with other hot tubs. Brilliantly, the air between the fiberglass lining and the wood exterior is super-heated to accelerate the heating process. The stove is cleverly engineered to draw cooler water through a lower channel and redistribute it though an upper channel to equalize the temperature.  

Start enjoying sooner 

This incredibly efficient wood stove will heat 304 gallons of water from 40°F (5°C) to 95°F (35°C) in 1.5 to 2 hours – the fastest-heating wood-burning hot tub available.  

Relax with friends and family the luxury of your Model S4 backyard wood-burning hot tub from SaunaLife.

Model

Model S4N

Material

Thermo-Spruce

Interior Dimensions

71" Diameter x 33"D

Exterior Dimensons

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 .7" Diameter

Maximum Wood Length

16"

Maximum Temperature

106F

Shipping Dimensions

91"L x 46"W x 87"H

Shipping Weight

595 lbs

Stimulates circulation & energy

Balances digestion & detox

Revitalizes skin & body

Starting at
/Month or
Regular price $5,690 Sale price $3,983
Fits 6 People
0% Interest for 24 Months | Select at Checkout
icon In Stock, Ready to Ship by
icon Description

Description

This premium sauna promotes complete body wellness through gentle, consistent heat therapy. It enhances circulation, supports digestion, and helps flush out toxins for improved internal balance. Regular use refines skin tone and boosts metabolism, aiding in healthy weight management and overall vitality.

Ready for your hot tub party  

The Model S4N wood-fired hot tub arrives completely assembled and is easy to set up. Its ergonomically shaped fiberglass tub is a comfortable place for up to 6 people. The interior surface is easy to clean, and the exterior is crafted from thermally enhanced spruce for superior weather resistance and durability. 

Engineered for efficiency and performance 

Engineered and crafted in the Northers Europe, this super-efficient hot tub heats in 1/3 of the time as traditional wood-fired hot tubs. No electrical connection is required. At the heart of the Model S4 is its ingenious self-cleaning corrugated stove with a secondary chamber that transfers heat from the smoke – reducing wood consumption up to 50% compared with other hot tubs. Brilliantly, the air between the fiberglass lining and the wood exterior is super-heated to accelerate the heating process. The stove is cleverly engineered to draw cooler water through a lower channel and redistribute it though an upper channel to equalize the temperature.  

Start enjoying sooner 

This incredibly efficient wood stove will heat 304 gallons of water from 40°F (5°C) to 95°F (35°C) in 1.5 to 2 hours – the fastest-heating wood-burning hot tub available.  

Relax with friends and family the luxury of your Model S4 backyard wood-burning hot tub from SaunaLife.

icon Features

Features

Model S4N 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)
  • 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)  
What's Included In It:

Model S4N Outdoor Wood-Burning Hot Tub  

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

Specifications

Model

Model S4N

Material

Thermo-Spruce

Interior Dimensions

71" Diameter x 33"D

Exterior Dimensons

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 .7" Diameter

Maximum Wood Length

16"

Maximum Temperature

106F

Shipping Dimensions

91"L x 46"W x 87"H

Shipping Weight

595 lbs

icon Technical

Used by Celebrities in the Fitness Space 🔥

Kim Kardashian

Kim Kardashian

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Lady Gaga

Hot Tub - SaunaLife S4N

Hot Tub - SaunaLife S4N

Starting at
/Month or $3,983

LUXURY LIVING, EVERDAY WELLNESS

APPROVED BY EXPERTS

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Hot Tub Design for Every Space

EXPERIENCE THE TRANSFORMATION

Top Benefits of Hot Tub Use

Our Success Stories

What Our Customers Say

Jason M.

Stars

"The canopy design is beautiful and the heat is just right. It’s become my favorite home ritual.”

12/09/25 Verified Sauna Buyer

Megan W

Stars

“Setup was easier than I thought. Now my mornings start with calm and clarity.”

18/09/24 Verified Sauna Buyer

Robert H.

Stars

“Serious luxury that provides serious relaxation. My bloodstream thanks me every time.”

12/09/23 Verified Sauna Buyer

Sarah M.

Stars

“Shipping was on time, the quality exceeded my expectations, and the support team genuinely cared.”

18/5/24 Verified Sauna Buyer

Laura G.

Stars

“Feels like we brought a high-end spa home. Best investment in our wellness yet.”

12/7/25 Verified Sauna Buyer

Denise K.

Stars

“Sturdy, stunning, and spacious—exactly what we needed for evenings with friends.”

16/4/25 Verified Sauna Buyer

Emily R.

Stars

"I can’t believe how relaxing this sauna is! It feels like having a spa right at home. The quality is amazing and it heats up quickly."

6/12/24 Verified Sauna Buyer

Michael T.

Stars

"Bought one for my backyard and it’s the best decision ever. After work, I sit in for 20 minutes and all my stress just melts away."

5/8/25 Verified Sauna Buyer

David K.

Stars

"This sauna has changed my evenings. I use it with my wife almost every night—it’s cozy, private, and feels premium."

4/7/24 Verified Sauna Buyer

Mark J.

Stars

"I use it after gym sessions and it’s perfect for muscle recovery. Plus, it adds a real luxury feel to my home."

17/11/24 Verified Sauna Buyer
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Questions?
We've Got Answers

What is the seating capacity and design of the Model S4N?

The Model S4N is designed to comfortably accommodate up to 6 persons. It features an ergonomic, circular design with a fiberglass interior and a Thermo-Spruce wood exterior, providing both comfort and durability.

What are the dimensions and water capacity of the tub?

The exterior dimensions are approximately 79" in diameter and 37" in height, while the interior measures about 71" in diameter and 33" in depth. The tub has a generous 304-gallon water capacity, allowing for full submersion and a luxurious soaking experience.

How long does it take to heat the water?

The Model S4N's efficient wood-burning stove can heat 304 gallons of water from 40°F (5°C) to 95°F (35°C) in approximately 1.5 to 2 hours, making it one of the fastest-heating wood-fired hot tubs available.

Does it require electricity?

No, the Model S4N operates entirely on wood-burning heat, requiring no electricity, making it an eco-friendly option for outdoor relaxation.

What materials are used in its construction?

The tub is constructed with Thermo-Spruce wood, known for its durability and thermal resistance, lasting up to twice as long as cedar. The interior is lined with a dark grey contoured fiberglass shell for enhanced bather comfort.

Is assembly required?

Yes, the Model S4N arrives fully assembled, minimizing setup time and effort. However, installation of the wood-burning stove and chimney may require some basic assembly.

What are the shipping dimensions and weight?

The shipping dimensions are approximately 91" in length, 46" in width, and 87" in height, with a shipping weight of about 595 lbs.

What is the maximum temperature it can reach?

The Model S4N can reach a maximum temperature of 106°F (41°C), providing a comfortable and relaxing soaking experience.

Have Questions? LET'S TALK!
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