The WK400 serves as a great add on to your existing home heating system by giving you the option to heat your home with wood. Our WK400 wood fired hot air furnace puts you in control of how you choose to heat your home as well as how much you want to save over other heating fuel options.
The Benjamin Heating Difference
- Tubular aerodynamic design construction couples high efficiency with ease of cleaning.
- Certified to be installed either by itself (with optional blower) or in conjunction with an existing warm air furnace.
- Optional Blower can be installed on either side of the unit, providing increased flexibility.
- Three front-mounted cleanouts provide easy access for cleaning large tubular heat exchanger and firebox.
- Insulated casings for maximum heat retention
- Round firebox eliminates the need for firebrick.
- Firebox 22" diameter x 29-1/2" depth.
- 6 Year Limited Warranty

Specifications
Certified To: CAN/CSA B366.1 and UL391
WK400 Specifications
Shipping Weight
370 lbs
Overall Dimensions
34" L x 28" W x 43" H
Breech Pipe
7" I.D.
Firebox Size
20"dia. x 23.25"
Fire Door Size
12" x 14" Cast Iron Door
Wood Length
23" Long Log
Specifications of Optional Blower
Dimensions
24" L x 19" W x 29" H
Plenum
R / A Plenum 16" x 22"
Filter Size
16" x 20" x 1"
Blower Motor
G10 blower- 1/3 HP motor.
Mount Positioning
Left or Right Side
WK400A Control Kit
1 Damper Motor
1 Transformer
1 J-BOX/Cover
2 Fan Limits
2 Fan Brackets
1 Thermostat
WK400 Control Kit
1 Damper Motor
1 Transformer
1 J-BOX/Cover
1 Fan Limit
1 Fan Bracket
1 Thermostat