SaunaLife Model S4 Soak Series 6 Person Wood-Fired Hot Tub
Usually Ships Out: 4-8 Business Days
Once an order is processed, packed, and shipped, we will send tracking information.
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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

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
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1.65” Thick Thermo-Spruce Exterior
- Lasts up to 2X longer than Cedar for superior outdoor durability.
- Naturally resistant to weather, moisture, and decay.
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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.
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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.
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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.
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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
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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 you place your order, you'll receive an order confirmation email. Please allow 1-3 business days for processing. If there are any unexpected delays, we’ll reach out to you immediately.
Shipping Methods:
- Standard Shipping: Small items ship with UPS, FedEx, or USPS. They usually do not need a delivery signature.
- Freight Shipping: Large or heavy items ship with a box truck to your curbside or loading dock. They will schedule a delivery appointment when the shipment is in your area.
Delivery Timeline:
- Processing: Please allow 1-3 business days for us to process your order in our system.
- Handling Time: This product should ship out in days from the time it is processed.
- Transit Time: Ground orders take 1-5 business days. Freight shipments may take 3-10 business days, depending on your location.
- Delivery Appointment: For freight deliveries, the carrier will contact you to set a delivery time. Someone must be present to receive the delivery.
Receiving Your Shipment: Inspect your shipment for damage before signing the delivery receipt. For any issues, mark “DAMAGED, NEEDS REVIEW,” take photos, and contact us within 2-3 business days.
Warranty Information:
We’re an authorized dealer; all products include the original manufacturer’s warranty. See product details for coverage specifics.
Questions or a claim? Contact us or the manufacturer for assistance.
