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SaunaLife S4N Wood-Fired Hot Tub – 6-Person Thermo-Spruce Outdoor Spa Tub
SaunaLife S4N Wood-Fired Hot Tub – 6-Person Thermo-Spruce Outdoor Spa Tub
SaunaLife S4N Wood-Fired Hot Tub – 6-Person Thermo-Spruce Outdoor Spa Tub
SaunaLife S4N Wood-Fired Hot Tub – 6-Person Thermo-Spruce Outdoor Spa Tub
Modern cabin with a hot tub on a wooden deck by a body of water.

SaunaLife S4N Wood-Fired Hot Tub – 6-Person Thermo-Spruce Outdoor Spa Tub

<p><strong>Authorized Dealer- Full Warranty Included</strong></p>

Authorized Dealer- Full Warranty Included

Sale price$6,640.00
SKU: SL-MODELS4N

Questions? Call Us +1 307 218 7877 Available: Monday - Friday: 8 AM - 9 PM MST Saturday: 10 AM - 5 PM MST

In stock
SaunaLife S4N Wood-Fired Hot Tub – 6-Person Thermo-Spruce Outdoor Spa Tub
SaunaLife S4N Wood-Fired Hot Tub – 6-Person Thermo-Spruce Outdoor Spa Tub Sale price$6,640.00
Description

The SaunaLife Model S4N Wood-Fired Hot Tub is a luxury outdoor soaking tub designed for up to 6 bathers. Handcrafted in Northern Europe, it combines a durable Thermo-Spruce exterior, a thick dark grey contoured fiberglass liner, and an integrated high-efficiency wood-burning stove. The S4N is designed for outdoor use and requires no electrical connection, making it suitable for patios, gardens, cabins, and outdoor wellness spaces. Its 304 stainless steel wood-burning heater uses dual heat compartments and internal circulation channels to help heat water efficiently and maintain a more even temperature throughout the tub. With a water capacity of 304 gallons, the S4N can heat water from approximately 40°F to 95°F in 1.5 to 2 hours, depending on weather, water temperature, wood type, and usage conditions.

Features
  • Luxury outdoor wood-burning hot tub for up to 6 bathers
  • No electrical connection required
  • Fully assembled hot tub for easier setup
  • Durable Thermo-Spruce exterior surround
  • Manufacturer-stated Thermo-Spruce durability of up to 2x longer than cedar
  • Thick dark grey contoured fiberglass liner for comfort and easier cleaning
  • 1.65" thick Thermo-Spruce tub surround
  • Matching Thermo-Spruce wood steps included
  • 304 stainless steel wood-burning heater
  • Dual heat compartments for improved heating efficiency
  • Self-cleaning corrugated stove design
  • Secondary heat chamber helps transfer heat from smoke and may reduce wood consumption by up to 50% compared with some traditional wood-fired hot tubs
  • Super-heated air between the fiberglass liner and wood exterior helps accelerate heating
  • Lower and upper internal flow channels help circulate water for even temperature distribution
  • Heats approximately 304 gallons from 40°F to 95°F in 1.5–2 hours
  • Maximum water temperature: 106°F
  • Polished stainless steel chimney with protection
  • Extra-thick steel-reinforced foam cover
  • Foldable insulated cover for easier removal and storage
  • Dark grey marine-grade vinyl cover exterior
  • Integrated hot tub drainage tap
  • Superior thermal resistance designed to help retain heat
  • Designed by SaunaLife and handcrafted in Northern Europe
Specifications
Specification Details
Brand SaunaLife
Model Model S4N
Product Type Wood-Fired Outdoor Hot Tub
Seating Capacity Up to 6 bathers
Main Material Thermo-Spruce
Interior Liner Dark grey contoured fiberglass
Heater Material 304 stainless steel
Exterior Dimensions 79" Diameter x 37" H / 200.7 cm x 94 cm
Interior Dimensions 71" Diameter x 33" H / 180.3 cm x 83.8 cm
Water Capacity 304 gallons
Product Weight 441 lbs / 200 kg
Product Weight When Filled 2,976 lbs / 1,349.9 kg
Stove Dimensions 19.8" W x 11.8" D x 13.1" H / 50.3 cm x 30 cm x 33.3 cm
Chimney Dimensions 0.7" Diameter x 95" H / 1.8 cm x 241.3 cm
Maximum Wood Length 16" / 40.6 cm
Maximum Temperature 106°F / 41.1°C
Shipping Dimensions 91" W x 46" D x 87" H / 231.1 cm x 116.8 cm x 221 cm
Shipping Weight 595 lbs / 269.9 kg
Electrical Requirement No electrical connection required
Assembly Arrives fully assembled
Design / Craftsmanship Designed by SaunaLife and handcrafted in Northern Europe
Included
  • Fully assembled hot tub
  • Matching Thermo-Spruce steps
  • Insulated cover
  • Drainage system with tap
  • Polished stainless steel chimney
  • Chimney cap
  • Installation instructions
Resources
Shipping Info

Standard in-stock products are processed within 1–2 business days, Monday–Friday. Estimated transit times after shipment:
Ground shipping: 3–7 business days for accessories, controls, Vital Red Light products, and some smaller heaters or lightweight components
LTL freight: 5–12 business days for full sauna units, large heaters, heater-and-stone bundles, heavy or palletized products and oversized or pre-assembled saunas. See our Shipping Policy for full details.

Return Info

Return requests for eligible products must be submitted within 30 calendar days of delivery if the item is new, unused, uninstalled, and in its original packaging with all parts and accessories included. A Return Authorization (RA) is required before shipping any return. Some items are non-returnable. See our Return & Refund Policy for full details.

Wood Fired Outdoor Hot Tub Built for Lasting Comfort

Designed for outdoor relaxation with durable materials, simple operation, and thoughtful craftsmanship. This hot tub offers a classic soaking experience suited for year-round use in outdoor settings.

Modern cabin with hot tub on a wooden deck by a body of water

Frequently Asked Questions

Understanding Hot Plunge

Hot plunge involves soaking in warm water as part of a structured relaxation or contrast routine. Often used alongside saunas or cold exposure, it’s valued for its calming, restorative feel and its role in intentional wellness practices.

Learn more

Have questions about choosing the right hot tub?

Speak to an expert

Let us assist you. Book an appointment with one of our Sauna sanctum expert to get answer to all of your concerns!

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Description

The SaunaLife Model S4N Wood-Fired Hot Tub is a luxury outdoor soaking tub designed for up to 6 bathers. Handcrafted in Northern Europe, it combines a durable Thermo-Spruce exterior, a thick dark grey contoured fiberglass liner, and an integrated high-efficiency wood-burning stove. The S4N is designed for outdoor use and requires no electrical connection, making it suitable for patios, gardens, cabins, and outdoor wellness spaces. Its 304 stainless steel wood-burning heater uses dual heat compartments and internal circulation channels to help heat water efficiently and maintain a more even temperature throughout the tub. With a water capacity of 304 gallons, the S4N can heat water from approximately 40°F to 95°F in 1.5 to 2 hours, depending on weather, water temperature, wood type, and usage conditions.

Features
  • Luxury outdoor wood-burning hot tub for up to 6 bathers
  • No electrical connection required
  • Fully assembled hot tub for easier setup
  • Durable Thermo-Spruce exterior surround
  • Manufacturer-stated Thermo-Spruce durability of up to 2x longer than cedar
  • Thick dark grey contoured fiberglass liner for comfort and easier cleaning
  • 1.65" thick Thermo-Spruce tub surround
  • Matching Thermo-Spruce wood steps included
  • 304 stainless steel wood-burning heater
  • Dual heat compartments for improved heating efficiency
  • Self-cleaning corrugated stove design
  • Secondary heat chamber helps transfer heat from smoke and may reduce wood consumption by up to 50% compared with some traditional wood-fired hot tubs
  • Super-heated air between the fiberglass liner and wood exterior helps accelerate heating
  • Lower and upper internal flow channels help circulate water for even temperature distribution
  • Heats approximately 304 gallons from 40°F to 95°F in 1.5–2 hours
  • Maximum water temperature: 106°F
  • Polished stainless steel chimney with protection
  • Extra-thick steel-reinforced foam cover
  • Foldable insulated cover for easier removal and storage
  • Dark grey marine-grade vinyl cover exterior
  • Integrated hot tub drainage tap
  • Superior thermal resistance designed to help retain heat
  • Designed by SaunaLife and handcrafted in Northern Europe
Specifications
Specification Details
Brand SaunaLife
Model Model S4N
Product Type Wood-Fired Outdoor Hot Tub
Seating Capacity Up to 6 bathers
Main Material Thermo-Spruce
Interior Liner Dark grey contoured fiberglass
Heater Material 304 stainless steel
Exterior Dimensions 79" Diameter x 37" H / 200.7 cm x 94 cm
Interior Dimensions 71" Diameter x 33" H / 180.3 cm x 83.8 cm
Water Capacity 304 gallons
Product Weight 441 lbs / 200 kg
Product Weight When Filled 2,976 lbs / 1,349.9 kg
Stove Dimensions 19.8" W x 11.8" D x 13.1" H / 50.3 cm x 30 cm x 33.3 cm
Chimney Dimensions 0.7" Diameter x 95" H / 1.8 cm x 241.3 cm
Maximum Wood Length 16" / 40.6 cm
Maximum Temperature 106°F / 41.1°C
Shipping Dimensions 91" W x 46" D x 87" H / 231.1 cm x 116.8 cm x 221 cm
Shipping Weight 595 lbs / 269.9 kg
Electrical Requirement No electrical connection required
Assembly Arrives fully assembled
Design / Craftsmanship Designed by SaunaLife and handcrafted in Northern Europe
Included
  • Fully assembled hot tub
  • Matching Thermo-Spruce steps
  • Insulated cover
  • Drainage system with tap
  • Polished stainless steel chimney
  • Chimney cap
  • Installation instructions
Resources
Shipping Info

Standard in-stock products are processed within 1–2 business days, Monday–Friday. Estimated transit times after shipment:
Ground shipping: 3–7 business days for accessories, controls, Vital Red Light products, and some smaller heaters or lightweight components
LTL freight: 5–12 business days for full sauna units, large heaters, heater-and-stone bundles, heavy or palletized products and oversized or pre-assembled saunas. See our Shipping Policy for full details.

Return Info

Return requests for eligible products must be submitted within 30 calendar days of delivery if the item is new, unused, uninstalled, and in its original packaging with all parts and accessories included. A Return Authorization (RA) is required before shipping any return. Some items are non-returnable. See our Return & Refund Policy for full details.