Cozy Heat SW – Wood-Burning Sauna Stove with Stones | 12 kW & 18 kW

Cozy Heat SW – Wood-Burning Sauna Stove with Stones | 12 kW & 18 kW

Made in Estonia | Traditional Wood-Fired Heat | High-Efficiency Combustion | Cylindrical Steel Design | 12 kW & 18 kW Options | Free U.S. Shipping

Bring the authentic warmth of traditional European sauna bathing into your wellness space with the Cozy Heat SW Wood-Burning Sauna Stove, a beautifully engineered heater designed and manufactured in Estonia.

Combining high-efficiency wood combustion, a distinctive cylindrical steel design, and generous sauna stone capacity, the Cozy Heat SW creates the gentle, lasting warmth and rich steam experience that make traditional wood-fired saunas so inviting.

Available in 12 kW and 18 kW configurations, the Cozy Heat SW is suited to everything from intimate personal saunas to spacious gathering spaces.

Its thoughtfully engineered combustion system is designed to use less firewood while producing lower emissions than conventional alternatives, offering a practical balance of traditional craftsmanship and modern heating efficiency.

Whether you're building a new sauna or upgrading an existing wood-fired system, Cozy Heat SW brings time-honored Estonian sauna craftsmanship into your home.

Why Choose the Cozy Heat SW?

Authentic Wood-Fired Sauna Experience

Enjoy the warmth, atmosphere, and tradition of a real wood-burning sauna.

Unlike electric or infrared systems, the Cozy Heat SW uses natural firewood to generate heat, creating a classic sauna environment complete with the gentle sounds and inviting atmosphere of a wood fire.

Heated sauna stones retain warmth and allow you to create bursts of steam by carefully adding water according to the manufacturer's instructions.

Engineered for Efficient Combustion

The Cozy Heat SW incorporates a specially designed combustion chamber that directs airflow to multiple stages of the fire.

This engineered airflow helps support more complete combustion and efficient heat production.

According to manufacturer-reported comparative testing, Cozy Heat stoves have demonstrated:

• Approximately 25–40% lower firewood consumption compared with selected conventional heaters

• Significantly reduced smoke emissions under tested conditions

• Compliance with applicable German BImSchV emissions requirements

Actual fuel consumption and emissions depend on firewood quality, operating technique, chimney draft, and installation conditions.

Traditional Steam with Generous Stone Capacity

The Cozy Heat SW is built to accommodate a substantial quantity of sauna stones.

As the stones absorb heat from the wood-burning stove, they help create a steady, comfortable sauna environment.

Adding water to properly heated stones produces steam, allowing you to customize the humidity and sensation of your session.

The large stone capacity is particularly well suited to those who enjoy traditional Finnish-style sauna bathing.

Distinctive Cylindrical Steel Construction

The SW features a sleek, cylindrical outer frame that adds an elegant architectural element to the sauna interior.

Its sturdy steel construction is engineered for repeated exposure to high operating temperatures.

The open stone-surround design combines traditional functionality with a contemporary appearance.

Available in 12 kW & 18 kW Models

Choose the appropriate heating capacity for your sauna room.

Cozy Heat SW 12 kW

Designed for sauna rooms approximately 210–423 cubic feet (6–12 m³).

Ideal for smaller and medium-sized traditional sauna spaces.

Cozy Heat SW 18 kW

Designed for sauna rooms approximately 317–635 cubic feet (9–18 m³).

An excellent option for larger private saunas and spacious traditional sauna environments.

Proper sizing also depends on insulation, glass areas, ceiling height, and other construction details.

Designed & Manufactured in Estonia

Cozy Heat brings Estonian craftsmanship and traditional sauna expertise to modern wood-burning heater design.

Estonia has a longstanding sauna culture, and the SW reflects that heritage through practical construction, efficient heating, and an emphasis on the quality of the sauna experience.

Efficient Heat Retention

The substantial sauna stone capacity helps store thermal energy and provide a consistent source of warmth.

Enjoy a comfortable sauna environment with the flexibility to create steam as desired.

Engineered with Installation Safety in Mind

Cozy Heat stoves are designed with manufacturer-specified safety clearances.

Their combustion engineering allows relatively compact installations compared with some traditional wood-burning heaters, provided all required clearances, ventilation, floor protection, and chimney specifications are followed.

Professional installation is strongly recommended.

Designed for Your Ideal Sauna Experience

Traditional Finnish-Style Sauna Bathing

Experience the warmth and humidity of a wood-fired sauna with heated stones and carefully applied water.

Post-Adventure Relaxation

Enjoy comforting sauna warmth after skiing, hiking, cycling, and other outdoor activities.

Muscle Comfort & Unwinding

Use soothing heat as part of a broader relaxation and recovery-focused wellness routine.

Backyard Sauna Retreats

Create an authentic wood-fired experience in a compatible outdoor sauna cabin.

Custom Sauna Projects

Choose the 12 kW or 18 kW model based on your sauna dimensions, construction, and heating needs.

Key Features

• Traditional Wood-Burning Heat: Authentic sauna experience without an electric heating element.

• 12 kW & 18 kW Models: Two heating capacities for different room sizes.

• Made in Estonia: European sauna engineering and craftsmanship.

• High-Efficiency Combustion: Manufacturer-reported lower fuel consumption.

• Reduced Smoke Emissions: Designed to meet stringent European emissions requirements.

• Cylindrical Steel Frame: Distinctive, contemporary appearance.

• Large Stone Capacity: Supports lasting warmth and traditional steam.

• Water-on-Stone Sauna Experience: Adjustable humidity through appropriate water application.

• Floor-Mounted Construction: Designed for compatible sauna installations.

• Manufacturer-Specified Safety Clearances: Supports proper installation planning.

• Wood-Fired Operation: No electrical heating connection required.

• Free U.S. Shipping: Subject to delivery eligibility.

Technical Specifications

Specification	Cozy Heat SW 12	Cozy Heat SW 18
Brand	Cozy Heat	Cozy Heat
Model	SW 12	SW 18
Heater Type	Wood-Burning	Wood-Burning
Nominal Heating Capacity	12 kW	18 kW
Recommended Sauna Volume	210–423 cu. ft.	317–635 cu. ft.
Recommended Sauna Volume (Metric)	6–12 m³	9–18 m³
Fuel	Firewood	Firewood
Maximum Log Length	13"	15.7"
Approximate Stove Dimensions	19.29" W × 21.25" D × 32.12" H	21.65" W × 25.59" D × 34.25" H
Stove Weight Without Stones	108–159 lb	154–221 lb
Manufacturer Stone Load Range	220–265 lb	309–353 lb
Nominal Thermal Efficiency	73.9%	81.3%
Required Chimney Draft	12 Pa	12 Pa
Flue Connection	Top	Top
Construction	Steel	Steel
Installation	Floor-Mounted	Floor-Mounted
Manufacturer Standards	EN 15821 / Applicable BImSchV Requirements	EN 15821 / Applicable BImSchV Requirements

What's Included

The Cozy Heat SW sauna stove package is offered with:

• Cozy Heat SW Wood-Burning Sauna Stove in Your Selected Size

• Cylindrical Outer Heater Frame

• Heater Body with Firebox Door

• Ash Collection Components

• Cleaning Access Components

• Sauna Stones Supplied with the Selected Package

• Manufacturer Installation & Operating Manual

A compatible complete chimney system, chimney accessories, and any required floor or wall protection are separate installation considerations.

Installation & Safety Considerations

The Cozy Heat SW is a wood-burning appliance and requires proper planning, venting, and installation.

1. Choose the Correct Model: Select the 12 kW or 18 kW version based on sauna volume and construction.

2. Prepare the Installation Area: Follow all manufacturer-required clearances and noncombustible surface requirements.

3. Plan the Chimney System: Install a compatible, properly sized chimney and flue system according to the stove manual and local building codes.

4. Ensure Proper Ventilation: Provide the combustion air and sauna ventilation specified by the manufacturer.

5. Install the Stove: Securely position the appliance and complete the approved venting connection.

6. Complete Initial Firing: Follow manufacturer instructions for initial heating and protective coating curing.

7. Load the Sauna Stones: Arrange suitable stones according to the recommended quantities and placement instructions.

8. Enjoy Your Sauna: Use properly seasoned firewood and operate the heater according to the manufacturer manual.

Professional installation is strongly recommended. Wood-burning appliances require careful attention to chimney draft, combustion ventilation, fire protection, and local code compliance.

Shipping & Delivery

FREE U.S. SHIPPING

Enjoy complimentary shipping on the Cozy Heat SW Wood-Burning Sauna Stove package to eligible U.S. destinations.

• Order Processing: Typically packed and shipped within 1–3 business days.

• Estimated Delivery: Approximately 5–10 business days.

• Available Variants: 12 kW and 18 kW.

• Delivery Method: Large-item freight or parcel arrangements depending on package configuration.

Delivery timelines are supplier-provided estimates and may vary by destination, inventory availability, and carrier scheduling.

Frequently Asked Questions

What is the difference between the Cozy Heat SW 12 and SW 18?

The SW 12 is designed for sauna rooms of approximately 210–423 cubic feet, while the SW 18 serves approximately 317–635 cubic feet.

Choose based on sauna size, insulation, glass areas, and manufacturer sizing guidance.

Is the Cozy Heat SW electric or wood-burning?

The Cozy Heat SW is a traditional wood-burning sauna stove. It uses firewood rather than an electric heating element.

Can I pour water over the stones to create steam?

Yes. The Cozy Heat SW is designed for traditional sauna bathing with heated stones. Carefully add water according to manufacturer instructions to create bursts of steam.

Does the Cozy Heat SW come in different sizes?

Yes. The SW is available in 12 kW and 18 kW configurations.

What kind of wood should I burn?

Use appropriately seasoned firewood that meets the manufacturer's fuel requirements. Avoid treated, painted, or contaminated wood.

Does it require a chimney?

Yes. As a wood-burning appliance, the Cozy Heat SW requires a properly designed and installed chimney and flue system.

What makes Cozy Heat different from conventional sauna stoves?

Cozy Heat emphasizes efficient combustion, reduced emissions under its test conditions, substantial sauna stone capacity, and Estonian manufacturing expertise.

Can the Cozy Heat SW be installed in an existing sauna?

Potentially, if the sauna dimensions, ventilation, chimney system, foundation, and fire-safety clearances meet the manufacturer's requirements.

Is the heater suitable for a backyard sauna?

Yes. The Cozy Heat SW is designed for traditional sauna installations, including compatible backyard sauna cabins with proper venting and fire protection.

Bring Authentic Wood-Fired Sauna Warmth Home

The Cozy Heat SW Wood-Burning Sauna Stove combines traditional Estonian sauna craftsmanship with efficient combustion technology and a striking cylindrical design.

Available in 12 kW and 18 kW configurations, it offers versatile heating capacity for a range of traditional sauna spaces.

With its substantial stone capacity, distinctive appearance, and emphasis on gentle, lasting warmth, the Cozy Heat SW provides the foundation for an authentic sauna experience.

Real fire. Lasting warmth. Traditional sauna craftsmanship.

Important Safety & Wellness Information

Wood-burning sauna stoves must be installed and operated according to manufacturer instructions, applicable building codes, and local fire-safety requirements.

Use a properly approved chimney system, maintain all required clearances, and provide adequate ventilation. Install appropriate carbon monoxide and smoke alarms where required by local codes and installation conditions.

Keep combustible materials away from the stove, supervise fires at all times, and never leave an operating wood-burning heater unattended.

Only add water to sauna stones according to the manufacturer's operating instructions. Avoid excessive water application and contact with hot surfaces.

Sauna bathing involves elevated temperatures and may not be appropriate for everyone. Individuals with cardiovascular conditions, uncontrolled blood pressure, impaired heat sensitivity, or other relevant health concerns should consult a qualified healthcare professional before use.

This product is intended for traditional sauna heating and general wellness applications, not the diagnosis, treatment, cure, or prevention of disease.