SaunaLife

SaunaLife S4B Wood-Burning Hot Tub | 6-Person Outdoor Soaking Tub, No Electricity

Name: SaunaLife S4B Wood-Burning Hot Tub | 6-Person Outdoor Soaking Tub, No Electricity
Brand: SaunaLife
SKU: SL-MODELS4
Price: 5990.00 USD
Availability: InStock

$5,990.00 USD

Sale Sold out

Shipping calculated at checkout.

The SaunaLife SOAK-Series Model S4B is a premium wood-burning hot tub handcrafted in Northern Europe, designed to accommodate up to six bathers in eco-friendly, electricity-free comfort. Built with a durable Thermo-Spruce exterior finished in sleek black and a contoured dark grey fiberglass interior, the S4B combines refined outdoor aesthetics with exceptional long-term durability. At its core, an advanced 304 stainless steel dual-compartment wood-burning heater heats 304 gallons of water from 40°F to 95°F in approximately 1.5 to 2 hours, making it one of the fastest-heating wood-burning hot tubs available.

The S4B's self-cleaning corrugated stove design transfers heat from exhaust smoke, reducing wood consumption by up to 50% compared to traditional wood-fired tubs. Fully assembled and requiring no electricity, this outdoor hot tub offers complete flexibility in placement with minimal environmental impact. An extra-thick, steel-reinforced insulated cover with marine-grade vinyl exterior retains heat and protects the tub between uses, while the included Thermo-Spruce steps and integrated drainage system complete the package for a truly turnkey outdoor soaking experience.

Key Features

Up to 6-person capacity wood-burning outdoor hot tub
No electricity required, fully eco-friendly operation
304 stainless steel wood-burning heater with dual heat compartments
Self-cleaning corrugated stove design, reduces wood consumption by up to 50%
Heats 304 gallons from 40°F to 95°F in approximately 1.5 to 2 hours
1.65" thick Thermo-Spruce surround, lasts up to 2x longer than cedar
Black painted exterior for a modern, refined outdoor aesthetic
Thick dark grey contoured fiberglass interior lining for comfort and easy cleaning
Extra-thick steel-reinforced insulated cover with marine-grade vinyl exterior
Polished stainless steel chimney with chimney cap
Integrated drainage system with tap
Matching Thermo-Spruce steps included
Fully assembled and ready to install
Handcrafted in Northern Europe

Technical Specifications

Dimensions & Capacity

Exterior: 79" Diameter x 37"H | Interior: 71" Diameter x 33"H
Water Capacity: 304 gallons | Maximum Capacity: Up to 6 bathers
Maximum Water Temperature: 106°F | Maximum Wood Length: 16"

Heater & Chimney

Heater: 304 Stainless Steel Wood-Burning, Dual Heat Compartments
Stove Dimensions: 19.8"L x 11.8"W x 13.1"H
Chimney: 95"H x 4.7" Diameter, polished stainless steel with cap

Materials

Exterior: 1.65" Thermo-Spruce, black painted finish
Interior Lining: Dark grey contoured fiberglass
Cover: Steel-reinforced foam, dark grey marine-grade vinyl exterior

Weight & Shipping

Product Weight (filled): 3,064 lbs
Shipping Dimensions: 91"L x 46"W x 87"H | Shipping Weight: 595 lbs
Flat Rate Freight: $950 to the contiguous United States

What's Included

Fully assembled wood-burning hot tub
304 stainless steel wood-burning heater
Polished stainless steel chimney with chimney cap
Matching Thermo-Spruce steps
Extra-thick steel-reinforced insulated folding cover
Integrated drainage system with tap
Installation manual

Thermo-Spruce Advantages

Lasts up to 2x longer than cedar
Superior thermal resistance for excellent heat retention
Eco-friendly and chemical-free
Exceptional dimensional stability for outdoor water use

Shipping
Flat rate freight of $950 to the contiguous United States. Ships fully assembled on a wooden pallet by special appointment with curbside delivery. Customers will be contacted prior to shipment to coordinate delivery and discuss any site-specific requirements. Remote delivery areas may be subject to additional charges.

Manuals:
Model S4 Installation Manual
Model S4 Dimensions

Warranty policy

Our warranty coverage varies by product category and manufacturer. All products sold through Marterra Elements are covered by the manufacturer's warranty as specified below.

Product-Specific Warranty Terms

Outdoor Showers & Saunas (SaunaLife)

Structural Components: 3-year limited warranty on wood construction and structural integrity
Hardware & Fixtures: 2-year warranty on stainless steel components, heaters, and fixtures
Electrical Components: 1-year warranty on control systems and electrical parts

Official Warranty Information – SaunaLife

Hot Tubs & Spas (Empava, SaunaLife)

Shell & Structure: 3-year limited warranty on acrylic shells and structural components
Plumbing & Jets: 2-year warranty on pumps, jets, and plumbing systems
Heaters & Controls: 2-year warranty on heating elements and control systems
Cabinet & Cover: 1-year warranty on exterior cabinets and insulated covers

Official Warranty Information – SaunaLife

Official Warranty Information – Empava

Cold Plunge Tubs (Revive Plunge)

Tub & Structure: 1-year comprehensive warranty
Chiller Units: 1-year warranty on compressor and cooling systems
Filtration Systems: 1-year warranty on pumps and filtration components
Inflatable Models: 1-year warranty on materials and seams

Official Warranty Information – Revive Plunge

Infrared Saunas (Wizzisauna)

Wood Structure: 3-year limited warranty
Heating Panels: 5-year warranty on carbon-crystal heating elements
Electronics: 1-year warranty on control panels and Bluetooth systems

Official Warranty Information – Wizzisauna

Compression Therapy Systems (Rapid Reboot)

Control Units: 2-year warranty on CLASSIC and REGEN units
Attachments: 2-year warranty on boots, hips, and arm attachments
Accessories: 1-year warranty on thermal therapy sleeves

Official Warranty Information – Rapid Reboot

Fitness Equipment (OxeFit)

Frame & Structure: Varies by model (see product specifications)
Electronics & AI Systems: 1-year warranty
Accessories: 1-year warranty

Official Warranty Information – OxeFit

Wellness Technology (Airvida)

Red Light Therapy Beds: Varies by model (see product specifications)
Hyperbaric Chambers: Varies by model (see product specifications)
Hydrogen Systems: Varies by model (see product specifications)

1 year official warranty for all Airvida products and elements.

Pizza Ovens (Empava)

Structure: 2-year warranty on oven body and construction
Heating Elements: 2-year warranty on burners and heating systems

Official Warranty Information – Empava

What's Covered

Our warranty covers:

Manufacturing defects in materials and workmanship
Structural failures under normal use
Malfunctioning components during the warranty period
Parts replacement for defective components

What's Not Covered

The warranty does not cover:

Normal wear and tear
Damage from improper installation or use
Damage from neglect, abuse, or misuse
Damage from natural disasters, accidents, or acts of God
Cosmetic damage that doesn't affect functionality
Products modified or repaired by unauthorized technicians
Damage from improper maintenance or cleaning
Commercial use (unless specified as commercial-grade)
Shipping damage (must be reported within 48 hours of delivery)

Warranty Claim Process

Step 1: Contact Us

Email: support@marterraelements.com
Include your order number, product name, and photos/videos of the issue
Describe the problem in detail

Step 2: Evaluation

Our team will review your claim within 2-3 business days
We may request additional information or photos

Step 3: Resolution

Repair: We'll provide replacement parts and instructions
Replace: We'll ship a replacement unit if repair isn't feasible
Refund: In rare cases, we may offer a refund (subject to approval)

Step 4: Return (if required)

We'll provide a prepaid shipping label for warranty returns
Pack the item securely in original packaging when possible

Installation & Maintenance Requirements

To maintain warranty coverage:

Follow all installation instructions provided
Use only authorized installers for products requiring professional installation
Perform regular maintenance as specified in product manuals
Use only approved cleaning products and methods
Keep records of maintenance and service

Extended Warranty Options

Extended warranty coverage may be available for select products. Contact us for details on extended protection plans.

Manufacturer Direct Warranties

Some products are covered directly by the manufacturer. In these cases:

Marterra Elements will facilitate the warranty claim process
You may be directed to contact the manufacturer directly
We'll assist with coordination and follow-up

Shipping & Handling

Warranty Repairs: We cover shipping costs for warranty-approved repairs
Non-Warranty Issues: Customer is responsible for shipping costs
Curbside Delivery: Most products include free curbside delivery
White Glove Service: Available for purchase on select items

Customer Satisfaction Guarantee

In addition to manufacturer warranties, Marterra Elements offers:

30-day satisfaction guarantee on select products
Expert customer support throughout your ownership
Access to installation guides and maintenance resources
Dedicated support team for troubleshooting

Contact Information

Marterra Elements Customer Support

Website: www.marterraelements.com
Email: support@marterraelements.com
Phone: +1 (844) 840-0414
Hours: Monday-Friday, 8 AM - 4 PM EST

Important Notes

Warranty terms begin from the date of purchase
Original proof of purchase required for all warranty claims
Warranty is non-transferable and applies to original purchaser only
Some products may have different warranty terms - refer to product-specific documentation
This warranty gives you specific legal rights, and you may have other rights which vary by state/province

Shipping & Refund

Shipping Policy

We offer multiple shipping options depending on the product type, brand, supplier, and delivery location. In certain cases, products are fulfilled and shipped directly from our authorized suppliers or fulfillment partners.

All available shipping methods, costs, and estimated delivery timelines are clearly displayed at checkout before payment is completed. Read more about Shipping Policy.