CleanFire 1800 Outdoor Wood Furnace

Engineered specifically to be easier than ever to operate and maintain, the CleanFire 1800 is cleaner burning, more efficient and packed with enhanced features!

WoodMaster outdoor wood furnaces are compatible with most existing and new heat systems, including forced air, hydronic heat, radiant baseboard, existing water-to-water and in-floor. They can also be hooked up to your domestic hot water.

The CleanFire 1800 is EPA Step 2 Certified.

Overall Efficiency (LHV) – 92.7%*
Overall Efficiency (HHV) – 86.5%*
Manufacturers Rated Heat Output Capacity** – 245,000 Btu/hr
Heat Output (12 hr) – 156,000 Btu/hr

Get Pricing

*Efficiencies are determined under the same test conditions using higher heating value, lower heating value and overall efficiency. **Based on EPA qualifying test.

Specifications

Furnace Specifications

Firebox Volume: 23 cubic ft
Firebox Dimensions: 37″L x 41.5″H x 26″W
Door: 22.75″W x 28.75″H
Ash Cleanout Door: 19″W x 11″H
Water Capacity: 360 gal.
Weight: 2,500 lbs
Three sets of 1-1/4″ Supply and Return Ports
Bypass Door and Alarm

Ceanfire Base and Dimensions Illustration

Colors

Copper | Bronze

Charcoal | Bronze

Green | Bronze

Taupe | Bronze

Features

Features/Benefits

Taller firebox door and the bottom of the door is lower for better firebox visibility.
Deeper heat exchanger for better efficiency and a longer Fusion Combustor aid in easier operation and a longer duration between maintenance intervals.
Two rows of primary air tubes are located on both sides of the firebox; the top row of air tubes is higher than the bottom of the door.
360-degree primary air supply provides air in the front, back and both sides of the firebox for optimal combustion burning different types of wood.
No removable ash pan means less maintenance and more heat transfer area.
Fireball tunnel refractory sections are more robust and interlocking.
Easy View™ Heat Exchanger offers 52% more surface area than CleanFire 700 resulting in higher efficiency. Easy-to-install turbulators are shorter and more robust for added durability.
Fittings, nipples, valves and a pump flange are standard on one set of supply and return ports. This saves time and money and makes connecting water lines easy.