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S4N Wood-Fired Outdoor Hot Tub

S4N Wood-Fired Outdoor Hot Tub

The SaunaLife Model S4N brings traditional Nordic-style soaking to the backyard with a fully assembled, wood-fired outdoor hot tub designed for up to six people. Finished in natural Thermo-Spruce and featuring a contoured dark grey fiberglass interior, the S4N combines authentic wood craftsmanship with an efficient off-grid heating system that requires no electrical connection. At the heart of the S4N is a 304 stainless steel wood-burning stove engineered with dual heat compartments for efficient heat transfer. The system draws cooler water through a lower channel and redistributes heated water through an upper channel, helping maintain a more even water temperature throughout the tub. The S4N holds approximately 304 gallons of water and can heat the water from 40°F to 95°F in approximately 1.5–2 hours under the specified conditions. Its maximum specified water temperature is 106°F. A smooth, ergonomically contoured fiberglass interior provides comfortable seating for up to six bathers, while the 1.65-inch Thermo-Spruce surround provides a natural architectural finish. An insulated steel-reinforced cover helps retain heat between uses, and matching Thermo-Spruce steps provide convenient entry and exit. Designed by SaunaLife and handcrafted in Northern Europe, the Model S4N arrives fully assembled for a straightforward outdoor installation.
Fits 6 people
Outdoor
$5,690
$5,690 $10,000
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  • 🔥 Built for Recovery
  • 🌲 Premium Materials
  • ✨ Exceptional Comfort

Key Features

Up to 6-Person Capacity: Spacious round configuration provides room for up to six bathers.

Wood-Fired Heating: Enjoy traditional hot-water soaking without requiring an electrical connection.

304 Stainless Steel Stove: Durable wood-burning heater provides efficient water heating.

Dual-Flow Heating System: Draws cooler water through a lower channel and returns heated water through an upper channel to help distribute heat throughout the tub.

Rapid Heat-Up: Heats approximately 304 gallons of water from 40°F to 95°F in approximately 1.5–2 hours.

Maximum 106°F Temperature: Supports water temperatures up to the specified maximum of 106°F.

Natural Thermo-Spruce Exterior: Thermally modified spruce creates a warm, natural exterior designed for outdoor use.

1.65-Inch Wood Surround: Substantial Thermo-Spruce construction surrounds the fiberglass bathing area.

Contoured Fiberglass Interior: Dark grey molded fiberglass provides a smooth, comfortable and easy-to-maintain bathing surface.

304-Gallon Water Capacity: Generous capacity supports comfortable group soaking.

Insulated Cover: Steel-reinforced foam cover with a dark grey marine-grade vinyl exterior helps retain heat when the tub is not in use.

Matching Thermo-Spruce Steps: Included wood steps provide convenient access.

Integrated Drainage Tap: Built-in drainage simplifies emptying the tub.

No Electricity Required: Wood-fired operation makes the S4N suitable for off-grid outdoor applications.

Fully Assembled: Arrives assembled and ready for site placement and setup.

Handcrafted in Northern Europe: Designed by SaunaLife and crafted in Northern Europe.

Product Details

Model: S4N

Series: Soak Series

Capacity: Up to 6 People

Product Type: Outdoor Wood-Fired Hot Tub

Exterior Material: Natural Thermo-Spruce

Exterior Thickness: 1.65 in

Interior Material: Dark Grey Contoured Fiberglass

Heating Type: Wood-Burning

Stove Material: 304 Stainless Steel

Water Capacity: 304 Gallons

Maximum Temperature: 106°F

Heat-Up Performance: Approximately 40°F to 95°F in 1.5–2 Hours

Electricity Required: No

Maximum Wood Length: 16 in

Drainage: Integrated Drainage Tap

Cover: Steel-Reinforced Insulated Foam Cover

Cover Exterior: Dark Grey Marine-Grade Vinyl

Steps: Natural Thermo-Spruce

Assembly: Fully Assembled

Installation: Outdoor

Origin: Northern Europe

Included Accessories

  • Fully Assembled Model S4N Hot Tub
  • Thermo-Spruce Steps
  • 304 Stainless Steel Wood-Burning Stove
  • Insulated Cover
  • Integrated Drainage Tap
  • Polished Stainless Steel Chimney
  • Chimney Cap
  • Installation Instructions

Dimensions

Hot Tub

Capacity: Up to 6 People

Exterior Dimensions: 79 in Diameter × 37 in H

Interior Dimensions: 71 in Diameter × 33 in H

Water Capacity: 304 Gallons

Product Weight: 441 lb.

Filled Weight: 2,976 lb.

Wood-Burning Stove

Stove Dimensions: 19.8 × 11.8 × 13.1 in (W × D × H)

Maximum Wood Length: 16 in

Chimney

Chimney Dimensions: 0.7 in Diameter × 95 in H*

Shipping & Delivery

Flat-Rate Freight: $950 shipping to the contiguous United States and $1,250 to Canada. Remote or complex delivery locations may not qualify for these standard rates and may require an additional freight quote.

Other Delivery Areas: Contact customer service for a custom freight quote.

Delivery Method: Due to the size and weight of the handcrafted hot tub, delivery is scheduled by special appointment. The S4N arrives securely protected on a wooden pallet with a protective wood enclosure.

Curbside Delivery: The freight carrier provides curbside delivery only and will lower the shipment to ground level. Customers are responsible for moving the hot tub from the curbside delivery point to its final installation location.

Delivery Coordination: Customers may be contacted before shipment to review delivery requirements and identify access conditions that could require additional services or result in additional charges.

Shipping Dimensions: 91 × 46 × 87 in (W × D × H)

Shipping Weight: 595 lb.

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S4N Wood-Fired Outdoor Hot Tub
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Crafted to Last

Materials chosen for beauty, strength, and natural resistance to heat and moisture.

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Quality Guarantee

Crafted with care, backed by our commitment to quality and your peace of mind.

Full Assembly
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Full Assembly

Our Pro Team will arrive to fully assemble your sauna for you for an additional fee.

UNMATCHED SUPPORT
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UNMATCHED SUPPORT

We offer free delivery and a 5-year warranty to ensure a pefect customer experience.

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KEY FEATURES

PRECISION CONTROL

PRECISION CONTROL

Experience adjustable temperatures from 34°F–131°F for both invigorating cold immersion and relaxing warm water therapy.

PREMIUM CRAFTSMANSHIP

PREMIUM CRAFTSMANSHIP

Natural cedar, refined finishes, and insulated construction combine lasting performance with timeless elegance.

PURE WATER SYSTEM

PURE WATER SYSTEM

Multi-stage filtration, continuous circulation, and ozone sanitation work together to maintain cleaner, fresher water.

SMART PERFORMANCE

SMART PERFORMANCE

An integrated 1 HP chiller, Wi-Fi controls, and all-in-one design deliver effortless operation every day.

Frequently asked questions

Can The Cold Spring be installed outdoors?

Yes. The Rodeo Wellness Cold Spring is designed for both indoor and outdoor installation and features an IPX4 splash-resistant design for dependable performance in a variety of environments. For optimal longevity, we recommend installing the unit on a stable, level surface with adequate drainage and following the installation guidelines provided in the owner's manual.

What temperature range does The Cold Spring offer?

The Cold Spring features a fully adjustable temperature range from 34°F to 131°F (1°C to 55°C), allowing you to enjoy invigorating cold immersion or relaxing warm water therapy in a single, all-in-one system.

How quickly does The Cold Spring cool the water?

Equipped with a powerful 1 HP chiller, The Cold Spring™ can reduce water temperature by up to 9°C (16°F) per hour under ideal operating conditions. Cooling performance may vary depending on ambient temperature, starting water temperature, and environmental conditions.

Does the Cold Spring require external plumbing or additional equipment?

No. The Cold Spring features a fully integrated all-in-one design with a built-in chiller, circulation pump, multi-stage filtration, and ozone sanitation system. No external plumbing or separate cooling equipment is required, resulting in a clean installation and a simplified ownership experience.

How does The Cold Spring maintain water quality?

The Cold Spring combines multi-stage filtration, continuous water circulation, and an integrated ozone sanitation system to help maintain cleaner, fresher water. Following the recommended maintenance schedule and replacing filters as needed will help ensure consistent performance.

Can I control the Cold Spring remotely?

Yes. The integrated Wi-Fi smart control system allows you to monitor and adjust water temperature remotely through the compatible mobile app, making it easy to prepare your plunge before each session.

What are the electrical requirements?

The Coldspring operates on a 110V / 60Hz household power supply and requires a dedicated 15A GFCI-protected circuit. We recommend installation by a qualified electrician to ensure compliance with local electrical codes.

How much water does The Cold Spring hold?

The Cold Spring has a maximum water capacity of 570 liters (approximately 150 gallons) and is designed to comfortably accommodate one person for full-body immersion.

Can The Cold Spring operate continuously?

Yes. The Cold Spring is engineered for continuous 24/7 operation, making it an excellent choice for residential wellness spaces, recovery studios, fitness facilities, spas, hotels, and other commercial environments.

What maintenance is required?

Routine maintenance includes cleaning the pre-filter, replacing the primary filter as recommended, maintaining the proper water level, and periodically refreshing the water. Following the maintenance guidelines in the owner's manual will help keep The Coldspring™ performing at its best.

What warranty does Rodeo Wellness provide?

At Rodeo Wellness, we stand behind every Coldspring we build. Each unit is backed by our warranty covering defects in materials and workmanship under normal use. Warranty coverage varies by product. For complete terms, conditions, and coverage details, please refer to our Warranty Policy.

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About Rodeo

At Rodeo we're on a mission to create the best saunas in the world. It all started with a simple realization - existing brands were either overpriced or cheap knock-offs.

So we built the brand we wished existed. A perfect balance of great materials, honest craftsmanship, and clean design at a fair price. We focus on what actually matters - crafting great products that hold up to real, everyday use.

We build with the belief that products should become part of your routine, not end up in a landfill. No trends. No gimmicks. Just great saunas, made the right way by people who care about their craft.

We make saunas for folks who deeply love the art of rest, recovery and relaxation after a hard days work.

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