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SaunaLife 6 - Person Wood - Fired Hot Tub | Model S4B/S4N - Topture

SaunaLife S4 | Wood-Fired Hot Tub · 6-Person

A 6-person wood-fired hot tub with a thermo-spruce shell and stainless steel stove that heats 304 gallons in under 2 hours — no electricity needed.

$5,690
$5,690 - $5,990
$5,690
$6,599
Save $909
$6,599 - $6,899
$6,599
+$950 shipping to the contiguous US
  • Heats 40°F to 95°F in under 2 hours — 3× faster.
  • Thermo-spruce exterior resists rot and weathering outdoors.
  • No electricity required: the stove runs entirely on firewood.
Exterior Finish: Natural Spruce - S4N
SaunaLife S4 | 6-Person Wood-Fired Hot Tub $5,690
Shipping (contiguous US) $950
Total $5,690
  • Secure checkout
  • 30-day guarantee
  • 2 Year warranty
In stock — estimated delivery:
Curbside freight delivery — items lowered to ground level

See What People Are Saying…

“This has completely transformed my workspace. The natural light is a game changer!”

Lisa R.
Verified owner

“Built it in a weekend with my brother. Glass front is the move — feels like a real room, not a closet.”

Mark T.
Verified owner

“I love the design and how easy it was to set up. Highly recommend for any home owner.”

James K.
Verified owner
Description

The SaunaLife SOAK-Series Model S4 represents the very best in wood-burning hot tub quality, efficiency, and luxury.

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 Northern 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.


Engineered and crafted in the Northern Europe, this super-efficient hot tub heats in 1/3 of the time and consumes 50% less wood than other wood-fired hot tubs. The interior surface is easy to clean, and the exterior is crafted from thermally enhanced spruce for superior weather resistance and durability. It uses an ingenious self-cleaning corrugated stove with a secondary chamber that transfers heat from the smoke. Brilliantly, the air between the fiberglass lining and the wood exterior is super-heated to accelerate the heating process.

Features:

  • Comfortably seats up to 6 people
  • Heats water to ideal temperatures in under 2 hours
  • Durable Thermo-Spruce tub surround (1.65” thick)
  • Thick dark grey contoured fiberglass lining
  • Stainless steel wood-burning heater utilizes dual heat compartments for unmatched efficiency
  • Wood-burning heater constructed of 304 stainless steel
  • Polished stainless steel chimney with protection
  • 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
  • Arrives fully assembled (aside from chimney) and no electricity required
    Includes

    Includes:

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

    Specifications:

    • Maximum Temperature: 106°F
    • Water Heating Time: 40°F (5°C) to 95°F (35°C) in under 2 hrs
    • Exterior Dimensions: 79"Diameter x 37"H
    • Interior Dimensions: 71"Diameter x 33"D
    • Water Capacity: 304 Gallons
    • Product Weight when filled: 3,064 lbs
    • Material: Thermo-Spruce
    • Chimney Dimensions: 4.7"Diameter x 95"H
    • Stove Dimensions: 19.8"D x 11.8"W x 13.1"H
    • Maximum Wood Length: 16"
    • Shipping Dimensions: 91"L x 46"W x 87"H
    • Shipping Weight: 595 lbs
    Manual

    Download the Installation Manual (PDF)

    Dimensions (PDF)

    Warranty

    SaunaLife Shipping Information

    General Delivery Information (Applies to Both)

    All deliveries require a scheduled appointment. The sauna will arrive protected on a wooden pallet, sometimes encased in wood. Prior to shipping this product, we often contact customers to share shipment details and needs and discuss any extenuating delivery circumstances that may complicate or cause additional delivery expenses. Our goal is to ensure your project’s success.

    Flat Rate Freight (LTL Truck)

    The driver is responsible for curbside delivery only and will lower the items to ground level.

    Exception for SaunaLife G3 & G4: These models are too long for lowering. In these cases, the customer is responsible for hand off-loading (piece by piece) or for off-loading with a forklift.

    Flat Rate Freight (Flat Bed Truck)

    For this option, the driver provides "delivery only" with limited assistance at the site. The customer is entirely responsible for removing the sauna crate from the truck.

    Required Equipment: You must provide a forklift or crane to offload the crate.

    Note: On rare occasions, remote or complex delivery areas may not qualify for these rates.

    Model Shipping Options

    Model Shipping
    E6 LTL
    E6W LTL
    E7 LTL
    E7W LTL
    E7G LTL
    E8 LTL
    E8W LTL
    E8G LTL
    EE6G LTL
    EE8G LTL
    CL3G LTL
    CL4G LTL
    CL5G LTL
    CL7G LTL
    CL12GCPCP Flat Bed Truck
    G2 LTL
    G3 LTL /contact us for "Flat Bed Truck" delivery
    G4 LTL /contact us for "Flat Bed Truck" delivery
    G6 Flat Bed Truck
    G11 Flat Bed Truck
    GL4 LTL
    GL6 LTL
    X2 LTL
    R3 LTL
    S4B LTL
    S4N LTL

    Your Own Hot Tub Ritual, in 3 Simple Steps

    You don't need a contractor or six months of forum research.

    Set it up
    Step 1

    Set it up

    Place it on a level pad, fill it with a hose, and you're soaking the same week — no plumber, no hookups.

    Light the fire
    Step 2

    Light the fire

    Load the firebox, drop in a match, and the wood-fired stove brings the water up to soak temperature on its own.

    Make It a Ritual
    Step 3

    Make It a Ritual

    The first few soaks tend to set the rhythm — the tub becomes a habit, not an expensive lawn ornament.

    REAL HOMES. REAL REVIEWS.

    See What Topture Customers Are Saying…

    Topture is rated 4.9/5 by 461+ verified customers

    We thought about buying a sauna for years and finally did. We absolutely love it, especially in the winter. It’s incredibly easy to assemble with two people the whole family uses it.

    Verified owner

    Ordered this sauna fall 2024 and we love it. No better feeling during a Minnesota winter. Lastly, I have to mention the customer service for this purchase has been like no other. Any questions or requests I had were addressed immediately by Topture. I got more than I expected from them and have already recommended them to several people looking for saunas. SO if you're thinking about it, JUST DO IT already..

    Verified owner

    Thanks for the great service - greatly appreciated.

    Verified owner
    461+ Verified Reviews

    Real homeowners, rated 4.9/5 across verified reviews.

    Lifetime Expert Support

    Same team before and after the sale, from sizing to warranty support.

    Authorized SaunaLife Saunas Dealer

    Authorized products with the applicable manufacturer warranty.

    Full-Value Freight Protection

    Freight damage? We help coordinate the claim and replacement process.

    STILL UNSURE?

    Frequently Asked Questions

    General

    Where are you located, and where do you ship from?

    We are a U.S.-operated company with our main headquarters in Sheridan, Wyoming.

    Orders are shipped across the continental U.S. from our network of warehouses, managed by our logistics partners in California, Illinois, Texas, New York, Florida, and Toronto.

    How much is shipping?

    Orders over $200 ship free within the continental United States. Orders under $200 carry a small shipping fee.

    Two exceptions: SaunaLife and ThermaSol products carry a freight charge at any order value, and sauna stones ordered without a heater ship at $60 per box because of their weight.

    Every charge is shown at checkout before you pay.

    Do you provide financing?

    Absolutely! To view your financing offer, simply select Shop Pay Installments as your payment method at Step 3 of checkout.

    You'll need to enter a debit card to receive your offer, but don’t worry—you can still back out before completing the purchase.

    How long will it take for my items to arrive?

    If your order is in stock, most orders ship within 2–7 business days of purchase. Transit time then depends on the distance from the warehouse and, for freight, on booking a delivery appointment.

    For custom, pre-order or made-to-order items, the estimated delivery time frame is listed on the product page. Delivery dates are estimates, so please don't book installation labor until your order has arrived and been inspected.

    What happens after I place my order?

    As soon as you place your order, you'll receive a confirmation email with your order details—be sure to keep it for your records. Once your order ships, you'll receive another email with tracking information.

    For freight deliveries, the carrier will call or text you to schedule an appointment once the shipment reaches their local terminal. Someone needs to be there to inspect the shipment and sign for it. Smaller parcels arrive by UPS or FedEx without an appointment.

    Is there a warranty?

    Yes, all products come with a manufacturer warranty. You can find the specific warranty details for each product under the "Warranty" tab on its product page.

    Do you have a showroom?

    We don’t have a showroom — we sell online. Our team is available by phone, email and chat to help you compare models, sizes and heaters, and we can send dimensions, installation manuals and electrical requirements before you buy.

    Where do you deliver to?

    We deliver throughout the 48 contiguous states, with curbside freight delivery for large items. Free shipping and standard rates apply there only. Alaska, Hawaii, Puerto Rico, other U.S. islands and Canada are quoted separately, depending on the brand and model. We can't ship freight or oversized items to P.O. boxes.

    Do you ship internationally?

    International Shipping

    For many products, yes, including to Canada, by custom quote. Email contact@topture.com with the product and your address before you order; availability and cost depend on the brand and model. Any duties, taxes and customs fees are your responsibility.

    Shipping to Hawaii, Alaska, and Puerto Rico

    Free shipping applies to the continental United States only. Shipping to Alaska, Hawaii, Puerto Rico and other U.S. islands is quoted separately and depends on the brand and model. Email contact@topture.com for a quote before you order.

    SaunaLife 6 - Person Wood - Fired Hot Tub | Model S4B/S4N - Topture

    Your hot tub, done the right way.

    • Heats 40°F to 95°F in under 2 hours — 3× faster.
    • Thermo-spruce exterior resists rot and weathering outdoors.
    • No electricity required: the stove runs entirely on firewood.
    • Secure checkout
    • 30-day guarantee
    • 2 Year warranty