Osburn 1800 Wood Insert

by Osburn

Like their cousins in the 1800/2200 freestanding series, the 1800 series inserts offer the same tried-and-tested architecture and the same great features, including a magnificent view of the fire through the bay window. They are also equipped with a powerful blower, transforming your old, inefficient fireplace into a highly effective heating system.

The 1800 series insert is both practical and elegant, and is a perfect choice for your living room or basement fireplace.


Fuel type : Dry cordwood
Recommended heating area (sq.ft.) : () 500 - 1,800
Firebox nominal volume (cu. ft.) : 1.8
Maximum burn time : () 6 h
Maximum heat output (dry cordwood) : (2) 65,000 BTU/h (19.0 kW)
Overall heat output rate (min. to max.) : (2)(3) 9,700 BTU/h (2.8 kW) to 36,300 BTU/h (10.6 kW)
Average overall efficiency (EPA cribs / Douglas fir) : (3) 66.0 % (HHV) (4) 71.0 % (LHV) (5)
Average overall efficiency (dry cordwood) :(3) N.A. (HHV) (4) N.A. (LHV) (5)
Optimum efficiency : (6) (7) 75 %
Average particulate emissions rate : (8) 2.8 g/h
Average CO : (9) N.A.

(1) Values are as measured per test method, except for the recommended heating area, firebox volume, maximum burn time and maximum heat output.

(2) The maximum heat output (dry cordwood) is based on a loading density varying between 15 lb/ft³ and 20 lb/ft³. Other performances are based on a fuel load prescribed by the standard. The specified loading density varies between 7 lb/ft³ and 12 lb/ft³. The moisture content is between 19% and 25%.

(3) As measured per CSA B415.1-10 stack loss method.

(4) Higher Heating Value of the fuel.

(5) Lower Heating Value of the fuel.

(6) Performances based on a fuel load prescribed by the standard at 7 lb/ft³ and with a moisture content between 19% and 25%.

(7) Optimum overall efficiency at a specific burn rate (LHV).

(8) This appliance is officially tested and certified by an independent agency.

(9) Carbon monoxyde.


High-efficiency EPA certified appliance Yes
Maximum log length 16"
Log positioning Over width
Chimney diameter 6"
Minimum chimney height (feet) 15'
Baffle type C-Cast
Approved for an alcove installation N.A.
Approved for a mobile home installation No
Shipping Weight 307 lb (139 kg)
Door type Single, glass with steel frame
Glass type Ceramic glass
Glass surface – dimensions (Width X Height) 22 3/4'' X 9 3/8''
Glass air-wash system Yes
Premium quality blower included (CFM) 90
Overall dimension (Height) 20 3/8''
Overall dimension (Width) 30''
Overall dimension (Depth) 25 3/8''
Door opening – dimension (Height) 8 1/2''
Door opening - dimension (Width) 18 3/8''
Firebox – dimension (Height) 11 1/2''
Firebox – dimension (Width) 16 7/8''
Firebox – dimension (Depth) 14 5/8''
Firebox lined with refractory bricks for better heat distribution Yes
Stainless-steel secondary-air system improving gas combustion Yes
Adjustable threaded legs Yes
Steel thickness – body 3/16"
Steel thickness – top 5/16"
Fireplace opening – minimum (Height) 20"
Fireplace opening – minimum (Width) 23 3/8"
Fireplace opening – minimum (Depth) 14 5/8"
USA standard (emissions) EPA
Canadian Standard (emissions) CSA B415.1-10
USA standard (safety) UL 1482
Canadian standard (safety) ULC S628
Tested and listed as per applicable standards By an accredited laboratory (CAN/USA)
Warranty Limited lifetime
Minimum clearances to combustibles* 
(Data expressed in inches. 1 inch = 25.4 mm)
  Canada United-States
Clearance – top (measured from the platform on which the appliance is installed)** N.A. N.A.
Clearance – combustible side mantle to unit 10'' 10''
Clearance – combustible top mantle to unit 14'' 14''
Clearance – combustible side wall to unit 17''
Clearance – minimum floor protection in front of the appliance 18" 16"
Clearance – top shelf to unit 22'' 22''

* The information given on the certification label affixed to the appliance always overrides the information published in any other media (owner's manual, catalogues, flyers, magazines and/or web sites).

** Some appliances have been tested with a low ceiling. Before setting up your unit, refer to the installation manual.


Osburn 1800 Wood Insert Operational Manual

Osburn 1800 Dimensions


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