SaunaLife Model S4 Soak Series 6 Person Wood-Fired Hot Tub

Regular price $6,640.00
Regular price Sale $6,990.00 Sale price $6,640.00
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SaunaLife S4 Soak Series 6 Person Wood-Fired Hot Tub - Fully Assembled

A Luxurious, Eco-Friendly Outdoor Hot Tub with Unmatched Efficiency

SaunaLife S4 Wood-Fired Hot Tub - Fully Assembled

Experience the ultimate in outdoor relaxation with the SaunaLife S4 Wood-Fired Hot Tub. Designed for efficiency, comfort, and durability, this fully assembled hot tub provides a spacious, ergonomic soaking experience for up to 6 bathers.

Unlike traditional hot tubs, the S4 requires no electricity, making it an eco-friendly and cost-effective option for those seeking a pure, off-grid soaking experience. Engineered in Northern Europe, the S4’s advanced wood-burning heating system heats 304 gallons of water in just 1.5 to 2 hours, which is three times faster than traditional wood-fired hot tubs.

Its innovative dual-chamber stove design reduces wood consumption by up to 50%, while the air-heated insulation system ensures optimal heat retention. Built with 1.65” thick Thermo-Spruce, the S4’s exterior lasts twice as long as Cedar, offering superior weather resistance and durability.

Inside, the dark grey fiberglass lining provides a smooth, contoured surface for maximum comfort and easy maintenance. Complete with matching wooden steps, an insulated foam cover, and a stainless steel chimney, the S4 is a premium, low-maintenance hot tub built for long-lasting enjoyment.

Soak-Series Model S4 Features

  • 1.65” Thick Thermo-Spruce Exterior
    • Lasts up to 2X longer than Cedar for superior outdoor durability.
    • Naturally resistant to weather, moisture, and decay.
  • 304 Stainless Steel Wood-Burning Heater
    • Dual heat compartments for 50% more efficiency.
    • Self-cleaning corrugated stove reduces wood consumption.
  • Polished Stainless Steel Chimney with Protection Cap: Prevents heat loss and enhances heating efficiency.
  • Heats Water in Just 1.5 - 2 Hours: Warms 304 gallons from 40°F to 95°F in record time.
  • Eco-Friendly, No Electricity Required: Off-grid hot tub solution – perfect for cabins, retreats, and backyards.
  • Innovative Heat Circulation System
    • Super-heated air between the fiberglass lining and wood exterior accelerates heating.
    • Cooler water is drawn through a lower channel and redistributed through an upper channel for even temperature distribution.
  • Seats Up to 6 People: Perfect for social gatherings, family relaxation, or solo retreats.
  • Dark Grey Contoured Fiberglass Lining
    • Ergonomically shaped for superior bather comfort.
    • Easy to clean, non-porous surface for low maintenance.
  • Matching Thermo-Spruce Steps for Easy Access: Provides safe and convenient entry into the hot tub.
  • Extra Thick, Steel-Reinforced Foam Insulated Cover
    • Folds for easy removal and storage.
    • Dark grey marine-grade vinyl exterior for durability.
  • Integrated Hot Tub Drainage Tap: Allows for easy water management and cleaning.

Model S4 Wood-Fired Hot Tub Specifications

  • Capacity: Up to 6 bathers
  • Exterior Dimensions: 79” Diameter x 37” H
  • Interior Dimensions: 71” Diameter x 33” Deep
  • Weight: 595 lbs
  • Water Capacity: 304 Gallons
  • Material: Thermo-Spruce Exterior, Fiberglass Interior
  • Heating System: 304 Stainless Steel Wood-Burning Stove
  • Chimney: Polished Stainless Steel with Protective Cap

What’s Included?

  • Luxury Thermo-Spruce Hot Tub (Fully Assembled & Ready to Use)
  • 304 Stainless Steel Wood-Burning Heater
  • Polished Stainless Steel Chimney with Cap
  • Ergonomic Dark Grey Fiberglass Lining
  • Matching Thermo-Spruce Wooden Steps
  • Extra Thick, Insulated Foam Cover (Steel Reinforced, Foldable)
  • Integrated Drainage Tap for Easy Water Management

Downloads: 

Soak-Series Model S4

Elevate Your Backyard with the SaunaLife S4 – A Fully Assembled, Eco-Friendly, & Fast-Heating Wood-Fired Hot Tub for the Ultimate Relaxation Experience!

Order Processing: Once your order is placed, you’ll receive a confirmation email. Please allow 1–3 business days for order review and processing. If we need to confirm delivery details or there are any delays, we’ll reach out right away.

How Saunas Ship:

  • Freight Delivery (Most Saunas): Sauna kits and larger models ship on a pallet via freight carrier and are delivered curbside.
  • Parcel Shipping (Smaller Items): Accessories or small components may ship via UPS, FedEx, or USPS.

Estimated Delivery Timeline:

  • Processing: 1–3 business days.
  • Estimated Ship-Out: Typically ships in 1–2 weeks.
  • Transit Time: Freight shipments typically take 3–10 business days once shipped.
  • Delivery Appointment: The carrier will usually contact you to schedule delivery. An adult must be present to receive and inspect the shipment.

Important Delivery Notes:

  • Curbside Delivery: Freight is delivered to the end of your driveway or loading area. Inside delivery or white-glove service is not included unless arranged in advance.
  • Measure First: Confirm doorway widths, staircases, and access paths. Sauna kits ship in multiple boxes and/or pallets.
  • Inspect on Arrival: Before signing, check for visible damage to packaging or pallet.

If There’s Damage: Note it on the delivery receipt (ex: “Damaged – subject to inspection”), take photos, and contact us within 48 hours so we can assist with next steps.

Warranty Coverage:

We are an authorized dealer, and all saunas include the full manufacturer’s warranty. Coverage terms vary by brand and model and are listed on the product page.

What’s Typically Covered:

  • Manufacturer defects in sauna materials and components
  • Heaters, controls, and electrical components per manufacturer policy
  • Replacement parts shipped to you (labor not typically included)

What’s Typically Not Covered:

  • Shipping damage not noted at delivery
  • Natural wood variation, knots, or movement over time
  • Improper installation, misuse, or operation outside manufacturer guidelines
  • Electrical issues due to incorrect wiring or inadequate power supply

Need Help? If you have questions or need to start a warranty claim, contact us and we’ll help coordinate with the manufacturer to get things resolved as quickly as possible.

Sauna FAQs

Benefits of Sauna
What are the main benefits of using a sauna? +
People use saunas to support relaxation, stress relief, muscle recovery, improved circulation, better sleep, detoxing the body, increasing longevity and many more. Sauna has been studied and proven to be among the most efficacious practices known to man.
Is there a difference in benefits between infrared and traditional saunas? +
Infrared saunas provide radiant heat at lower temperatures, which many users find more comfortable for longer sessions. Traditional saunas heat the air to higher temperatures for a classic, intense sauna experience. Both are popular for wellness use—the best choice depends on personal preference.
How often should I use a sauna, and how long should sessions be? +
Most people use a sauna 3–5 times per week for 15–45 minutes per session. Start shorter and increase gradually, stay hydrated, and listen to your body.
Choosing the Right Sauna
Which sauna type should I choose: infrared, traditional, or hybrid? +
Infrared saunas are known for lower-temperature comfort and convenience. Traditional saunas offer higher heat and a more intense, classic feel. Hybrid saunas combine both options, allowing flexibility based on how you want to use your sauna.
What size sauna do I need? +
One- and two-person saunas are ideal for personal daily use. Larger models offer more room to stretch or share with others. If space allows, many buyers prefer to size up for added comfort.
What’s the difference between full spectrum and far infrared? +
Far infrared focuses on steady, comfortable radiant heat. Full spectrum typically includes near, mid, and far infrared wavelengths for those who want the broadest range of infrared output. Both are effective for general wellness use.
What to Know Before You Order
Will this sauna work in my home or space? +
Most saunas work well in residential spaces as long as you have adequate room, ventilation, and the proper electrical connection. Always review product dimensions and requirements before ordering.
What are the electrical requirements? +
Many smaller infrared saunas use a standard 120V outlet. Larger infrared and traditional models often require a dedicated 240V circuit. Electrical requirements are listed on each product page.
How difficult is assembly and setup? +
Most saunas are designed for straightforward assembly and can be set up in 1–3 hours with two people. Some traditional models may require an electrician if hardwiring is needed.
How much does it cost to run a sauna? +
Operating cost depends on sauna size, heater wattage, usage frequency, and local electricity rates. Most owners find sauna use comparable to running other common household appliances.
Shipping & Warranty
How is a sauna shipped and delivered? +
Saunas typically ship via freight in boxed or crated shipments. The carrier will contact you to schedule a delivery appointment once the shipment reaches your area.
Is shipping included in the price? +
Yes. All saunas include free shipping. The price shown on the product page is the final delivered price.
What warranty comes with my sauna? +
All saunas include the manufacturer’s warranty. Coverage details vary by brand and model and are listed on each product page.
What if my sauna arrives damaged or I need help? +
Inspect your delivery upon arrival and note any visible damage before signing. If you need assistance at any point, contact support@wellnessjunction.com or call 877-791-8083.

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