WoodMaster proudly announces the release of the CleanFire 1800, a next-generation outdoor wood furnace. EPA Step 2 Certified, CleanFire 1800 delivers up to 93% (LHV) overall efficiency and a powerful 245,000 Btu/hour heat output.
What’s New:
Easier Operation, Cleaner Burn, Greater Efficiency
- Improved Firebox Access: Taller door with lower bottom edge makes for better visibility into the firebox.
- Enhanced Efficiency: Deeper heat exchanger and longer Fusion Combustor reduce maintenance frequency.
- Optimized Airflow: Dual rows of primary air tubes and 360° air supply ensure efficient combustion with various wood types.
- Low Maintenance Design: No ash pan increases heat transfer area and reduces upkeep.
- Easy View™ Heat Exchanger: More surface area than previous models for higher efficiency; shorter, stronger turbulators for durability.
- Simplified Plumbing: Pre-installed fittings, valves, and pump flange save time and cost during setup
Exploring the CleanFire Series is a smart move for anyone seeking a cleaner, more cost-effective way to heat their home, garage, or outbuildings, as well as domestic water. These outdoor wood furnaces use advanced combustion technology to burn wood more efficiently.
With EPA Step 2 Certification, reduced wood consumption, and remote monitoring via smartphone, the CleanFire Series offers reliable whole-home heating while keeping smoke, ash, and the fire outside.
The CleanFire checks every box of what an outdoor wood furnace should be:
Clean & Efficient
Enjoy the benefits of cleaner burning and high efficiency and use up to 60% less wood compared to many other forms of wood heating.
Easy Maintenance
The patented vertical Easy View Heat Exchanger with hinged door provides full access without the use of tools. Fully accessible front area and rear ash cleaning area.
Convenient
The FireStar combustion controller constantly monitors how the wood is burning and adds air where and when it’s needed for the cleanest, most efficient combustion. You can even see how it’s operating in real time on your smartphone.
Comfortable & Safe
CleanFire outdoor wood furnaces provide the warmth and comfort of burning wood — without the mess, inconvenience and dangers that can be caused by indoor burning.
Eliminate Heat Bills
Drastically reduce or eliminate your fossil fuel or electric heating bill. Owners that cut their own wood can entirely eliminate their heating bills.
Visit WoodMaster.com to learn more about the CleanFire series.
*Efficiencies are determined under the same test conditions using higher heating value, lower heating value and overall efficiency.

