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400,000 BTU Indirect Fired Construction Heater (Natural Gas/Propane) (HSP400ID-G / F105135)

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SKU: F105135

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The HeatStar HSP400ID-G PRO-SERIES 399,000 BTU/HR Indirect Fired (Natural Gas or Propane) Heater is an ideal heating solution for any large industrial or rental application. The Unit ships with factory installed dual 12" duct adapters. When paired with up to 100' of HeatStar high quality high temperature ducting, this indirect fired heater is an ideal heating system for delivering even heat to both event tents and construction sites with clean fresh heated air. You can place the unit outside the space and duct the warm air in or for a fuel savings you can place the heater in the space to be heated and vent the exhaust out. Either way, it's hard to beat the comfort and safety of indirect heat.

  • Heavy duty frame
  • Lift bracket
  • Heat exchanger to keep exhaust gas and heated air separate
  • Powerful fans ensure high static pressure
  • Long life stainless steel combustion chamber
  • Electronic flame control
  • Water resistant flame control box
  • Automatic safety and control devices
  • Optional thermostat available for constant temperature control
  • Durable powder coated finish
  • Heavy duty duct adapter available
  • UL Certified


ModelHSP400ID-G (F105135)
Weight473 lbs
Fuel TypeNatural Gas or Propane
Minimum LP Tank SizeSee Manual for Guidelines
Minimum NG Line SizeSee Manual for Guidelines
Electrical Rating120V/60 Hz, 13 Amps
Air Volume (CFM)4032
Gas Inlet Connection1/2in
Gas Inlet Pressure MinNG (7in w.c.) / LP (8in w.c.)
Gas Inlet Pressure MaxNG (10in w.c.) / LP (13in w.c.)
Clearance to Combustibles: Horizontal6 ft
Recirculating DuctingF105127 Adapter Ring / F105128 24in x 25ft Duct and Clamp
Duct Length Max100 ft
Duct DiameterStandard Dual (12in) or Single F105126 (16in)
Multiple Ducting OptionalF150040 12in x 25ft / F150050 16in x 25ft
Wheel TypePneumatic
Thermostat OptionalF105108 Analog (33') / F105106 Digital (33')
Item Length68"
Item Width27"
Item Height60"
Warranty1 Year Limited

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