Products – Heaters


MAC2.5ES Indirect Flame Heater

Model: MAC2.5ES

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About the MAC2.5ES Indirect Flame Heater

The MAC2.5ES is a relatively large drag-skid platform, but slightly smaller than our MAC4.2. The MAC2.5ES delivers 2,500,000 BTU’s per hour (733 kW/hr) of heat. 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 to the targeted area. The MAC2.5ES is comprised of rugged, heavy-duty steel construction inside and out. Large doors provide easy access for service, maintenance, and operation.

The MAC2.5ES has a temperature rise of up to 180° F (82° C) and an air output volume of 12,000 cubic feet per minute at 3 inches of static pressure, delivered through a single 30 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



  • 2,500,000 BTU/hr (733 kW/hr)
  • Output Air Volume: 12,000 CFM @ 3" static pressure
  • Normal Operating Fuel Rate: 17.7 GPH (67 lph)



  • Burner fuel source
    • Diesel



  • Burner fuel source
    • Propane
    • Natural gas
    • Dual fuel
  • Modulating burner
  • Custom paint
  • Optional outlet duct sizes