Narvi Kuru Wood-Burning Heater

Traditional Finnish Wood-Fired Heat. Authentic Sauna Atmosphere.

The Narvi Kuru Wood-Burning Sauna Heater delivers the authentic warmth and atmosphere of a traditional Finnish sauna. Crafted in Finland by trusted sauna manufacturer Narvi, the Kuru blends timeless Nordic sauna culture with modern craftsmanship and reliable performance.

A stylish glass fire door allows you to enjoy the natural glow of the fire while the heater produces rich, soft steam as water is poured over the heated stones. The durable black steel body with stainless steel front detailing creates a clean, refined appearance that complements both traditional and modern sauna interiors. 

Available in two models to accommodate a range of a sauna room sizes, the Narvi Kuru provides powerful heating performance while maintaining the gentle, balanced löyly (steam) that defines the traditional Nordic sauna experience. 

Quick Highlights

• Fuel Type: Wood-Burning
• Mount Type: Floor-Standing
• Sauna Room Size: 283-706 cu ft (depending on model)
• Stone Capacity: 77-88 lbs (depending on model)
• Control System: Manual air control and wood-burning operation
• Design: Modern steel sauna stove with Nordic styling
• Installation: Chimney connection required (top or rear flue)
• Made In: Finland

Why You'll Love It

• Authentic wood-burning Finnish sauna experience
• Heat-resistant glass fire door to enjoy the natural fire glow
• Large stone capacity for soft, even löyly (steam)
• Efficient combustion for strong, consistent heat
• Flexible chimney connection options (top or rear)
• Durable steel construction built for long-lasting performance
• Clean Nordic design complements traditional or modern saunas
• Built in Finland by one of the most respected sauna heater manufacturers

Choosing Your Heater Size

The Narvi Kuru heater is available in two models designed for different sauna room sizes. Selecting the appropriate heater ensures efficient heating and optimal löyly (steam).

Recommended sauna room sizes:

Sizing Tip:
If your sauna includes glass doors, windows, exterior walls, stone surfaces, or outdoor installation, selecting the next larger heater size may help maintain proper heating performance.

• Kuru 14 – Sauna rooms 283-494 cu ft
• Kuru 20 – Sauna rooms 353-706 cu ft

Important Information

Product Details

• Sauna stones included for optimal heat retention and steam production
• Chimney adapter included for connection to compatible chimney systems
• Heat-resistant glass fire door creates a warm ambient fire glow
• Wooden handle remains cool and comfortable during operation
• Durable painted steel body with stainless steel front detailing designed for years of performance
• Backed by a 2-year Limited Manufacturer Warranty

Installation

• Chimney systems and floor protection plates may be required depending on installation 
• Protective floor plate required when installing the heater on combustible flooring such as wood, vinyl, laminate, or other heat-sensitive materials 
• Optional wall heat shields may be used to reduce required wall clearances or when the chimney exits through a wall
• Flue connection can be configured from either the top or rear of the heater depending on chimney layout
  
• Chimneys may exit through the roof or through a wall before continuing vertically outside
• Proper sauna ventilation and insulation are required for safe operation
• Installation must comply with local building codes and safety clearances
• Always consult the installation manual or a qualified installer   

Installation Tip: Due to the substantial weight of the heater when filled with stones, some installations – especially on uneven surfaces – may benefit from using an adjustable floor plate to ensure proper stability and safe operation. Adjustable Installation Base (floor plate) available separately.

Shipping

• Heater units typically ship via ground delivery
•  Manufacturer-recommended sauna stones are included and may ship in separate boxes via ground delivery
• When ordered as part of a sauna package, the heater and stones may ship together with the sauna via freight delivery 
• Shipping method will be confirmed prior to shipment 
• Lumaterra Wellness coordinates shipping directly with the manufacturer to ensure safe and efficient delivery 

What's Included

• Narvi Kuru sauna heater
• Sauna Stones
• Chimney adapter
• Installation Manual

Technical Specifications

Model Options

• Kuru 14: 283-494 cu ft
• Kuru 20: 353-706 cu ft
  

Heat Output

• Kuru 14: 13 kW
• Kuru 20: 16 kW

Stone Capacity

• Kuru 14: 77 lbs
• Kuru 20: 88 lbs

Net Weight

• Kuru 14: 108 lbs
• Kuru 20: 121 lbs

Total Shipping Weight (with Stones)

• Kuru 14: 185 lbs
• Kuru 20: 209 lbs 

Product Width

• Kuru 14: 16.5 in
• Kuru 20: 18 in

Product Height – 26.5 in

Product Depth – 18.5 in

Flue Connection Diameter – 119 mm (4.68 in)

Flue Connection – Top or Rear

Minimum Sauna Room Height – 78 in

Maximum Firewood Length – Approx. 13 in

Country of Origin – Finland 

Resources

Access manufacturer documentation, installation requirements and detailed specifications.

Downloads & Documentation:

Narvi Kuru Data Sheet
Narvi Kuru Installation Manual