Products – Heaters


MAC400G Indirect Flame Heater

Model: MAC400G

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Efficient, portable heat; the MAC400G Indirect Flame Heater

The MAC400G is highly efficient and extremely portable in a small size heater platform. The MAC400G offers 400,000 BTU’s per hour (117 kW/hr) of heat in a compact trailer mounted design that will get you into even the tightest areas. It is an indirect diesel flame heater that provides clean, safe, and reliable air flow capable of ducting long distances with minimal loss of air pressure or outlet temperature. The MAC400G is ideal for use in applications such as construction areas, small to medium structure heating, concrete curing work, equipment thawing, and moisture control. The MAC400G is comprised of rugged, heavy-duty steel construction inside and out. Large doors provide easy access for service, maintenance, and operation.

The MAC400G has a temperature rise of up to 180° F (82° C) and an air output volume of 1,700 cubic feet per minute at 3 inch static pressure, delivered through one (1) 12 inch outlet. The heat exchanger is designed and constructed of stainless steel. We offer simple to use, push button controls for ease of operation.

Features & Benefits



  • 400,000 BTU/hr (117 kW/hr)
  • Output Air Volume: 1,700 CFM @ 3" static pressure
  • Normal Operating Fuel Rate: 3.4 GPH (12.9 lph)



  • Burner fuel source
    • Diesel
  • Self-contained
  • Trailer mounted 



  • Skid mounted
  • Custom paint