Metters Kosi No.35

Kosi No.35
The big brother of the Kosi range, the Kosi No.35 Freestanding Wood Heater is designed to bring powerful warmth, ambience, and classic Australian character to larger open-plan spaces. With its generous firebox and timeless freestanding design, it is ideal for family living areas, communal spaces, and homes that need dependable high-capacity heating.
Built with a mighty 73L firebox, the Kosi No.35 allows larger logs and more wood to be loaded at once, helping extend burn times and reduce the need for frequent reloading. Its fire brick, vermiculite liner, and baffle plate technology support a hotter, cleaner, and more efficient burn, while the inbuilt ash box makes everyday maintenance simple and mess-free.
Combining Australian heritage, practical performance, and modern combustion technology, the Kosi No.35 is a strong choice for homeowners seeking reliable warmth across very large living areas.
Size Specifications
Heater Dimensions: 694 mm W × 534 mm D × 864 mm H
Weight: 156 kg
Heating Area: Up to 350 m²
Firebox Dimensions: 540 mm W × 325 mm D × 374 mm H
Firebox Capacity: 73L
Firebox Thickness: 6mm steel
Maximum Log Size: 520 mm
Fan: Included
Outside Air Kit: Optional
Warranty: 15-year firebox warranty
Performance Specifications
Average Heat Output: 7.8kW
Emissions: 0.7g/kg
Efficiency: 68%
Additional Information
Large-Capacity Heating
Designed to comfortably heat very large open-plan spaces up to approximately 350 m².
Generous 73L Firebox
The larger firebox allows more wood and larger pieces to be loaded, helping support longer burn times and less frequent reloading.
Efficient Combustion Technology
Fire brick, vermiculite liner, and dual-port baffle plate technology help improve heat retention, combustion efficiency, and burn performance.
Low Emissions Performance
Produces low emissions of 0.7g/kg, supporting cleaner operation for a high-capacity freestanding wood heater.
Reliable Heat Output
Delivers an average heat output of 7.8kW for strong, consistent warmth in larger spaces.
Inbuilt Ash Box
Includes a convenient no-mess ash box to make cleaning and ash removal easier.
Durable Steel Construction
Built with a 6mm steel firebox for long-term strength and dependable performance.
Large Log Capacity
Accepts logs up to 520 mm, making it practical for extended heating and everyday use.
Fan Included
Comes with a fan to help circulate warmth more effectively throughout the room.
Optional Outside Air Kit
Can be configured with an outside air kit to support efficient combustion in suitable installations.
15-Year Firebox Warranty
Backed by a 15-year firebox warranty for added confidence and peace of mind.