HI400HD – Portable, durable and versatile for all heating applications

HI400HD portable indirect fired air heaters produce clean, dry, healthy heat offering an ideal environment for a variety of construction, residential and restoration applications without the use of an open flame, combustion carbons or water. Available in Diesel or Natural Gas/Propane, the HI400HD can handle various heating and drying applications at over 85% efficiency due to dedicated 2nd blower for combustion; one of the highest in the industry! Large pneumatic tires mean easy positioning on jobsites. The HI400HD is CSA approved.

  • The HI400HD comes standard with -40 degree F/C cold weather kit and robust design that features lifting bail, fork pockets and adjustable handle.
  • Diesel model features 2 stage burner with low-fire setting for fuel savings during low heat demand.
  • Adjustable ball valve on Natural Gas/Propane model allows flexibility to switch from Natural Gas to Propane with ease and includes safety locking device to keep valve from moving once set.
  • Burner head and gas pipe assembly are made from 100% stainless steel for long life.
  • Optional 4″ burner supply air duct allows warm air from outlet to preheat combustion air for increased cold weather performance and higher efficiency.
  • Both Diesel and Natural Gas/Propane models are available with your choice of a 1 x 20″, 2 x 16″ or 3 x 12″ supply. A 20″ return air adapter is also available to recirculate warm air from your heated structure to the building.

Accessories include thermostat, ductwork, L-vent pipe, L-vent adapter, and rain cap.


Technical Specifications

Technical Specifications Technical Specifications

Model Variations

Model Variations

Additional Information (PDF Files)

Product Information Sheet