• Irma, WI
  • (715) 360-6292

HeatMaster G4000

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The HeatMasterss G Series is widely recognized as the flagship furnace of the industry. Many new innovative features make the new G Series line of furnaces the easiest to operate, longest lasting and highest performing in all real world applications.


Technical Information

Approx. Heating Space 4,000 sq. ft.
8 Hr. Burn Rate 90,000 BTU/hr
Water Capacity 116 gallons
Firebox Volume 9.4 cubic ft.
Recommended Wood Length 18-20"
Firebox Dimensions(L" x W" x H") 23" x 22" x 32"
Flexbox Door 20" x 20"
Weight 1,353 lbs
Outlets 1 set of 1" and 1 set of 1-1/2"
Chimney Size 6"
Overall Dimensions(L" x W" x H") 59" x 40" x 83"
Smokeless Loading
EZ Clean Handle
Ultra Efficient Heat Exchange Tubes
Insulated Hinged Rear Door
Recirculation Pump
Modulating Air Dampers & Oxygen Sensor
Large Capacity Firebox
Tornado Combustion Chamber
Thermal Resistant Foam Board Insulation