Harman Central Heating Wood/Coal Hot-Air Furnace SF-3500-A

Warm Up Your Quality Time with Harman Central Heating

Harman Hot-air Furnaces have three internal systems that help maintain a clean, consistent and comfortable temperature throughout your entire home: a complete automatic start and stop blower system, an automatic draft system with high limit control and a filter system to ensure clean air. All you have to do is set the thermostat!



  • Limited 5-Year Warranty
  • Exclusive Harman Spiral Chamber
  • Harman Grate System
  • Automatic Draft Control
  • Secondary Air Flow
  • Heavy Duty Blower
  • Three-Speed Blower Switch
  • Reversible Filter Box With 14" x 20" Filter
  • Domestic Hot Water Coil


Domestic Hot Water Coil



Fuel    Wood
BTU Range    170,000
Heating Capacity    4,000
Blower Size    1,400 cfm
Flue Size    7 inches
Weight    800 lbs
Depth    36 inches
Log Length    27 inches
Height    52 inches
Width    28 inches
Domestic Hot Water Coil    Optional
Number Of Grates    6
Ash Pan    Standard
Firebox Reducer    Optional
Height Top Of Flue    45 inches
Automatic Draft    Standard
Plenum Size    20" x 25"
Filter Box And Filter    Standard
Number Of Blower Speeds    1
Fan Control & High Limit    Standard
Thermostat    Standard
Depth Without Filter Box    36 inches
Depth With Filter Box    53inches


Clearances & Dimensions

Rear    30 inches
Side    24 inches
Front    36 inches
Clearance To Flue Pipe    18 inches

@ Kegerreis Stoves.