2025 Generac Power Systems Flameless Mobile Heaters MFH900

Information

2025 Generac Power Systems Flameless Mobile Heaters MFH900

MFH900 Flameless Heater

The MFH900 flameless heater provides safe and reliable heat for Oil and Gas, Mining, Construction, Utility projects and more. Generac Mobile's flameless heat technology delivers heat without an open flame for use in hazard zone areas in which ignitable flames may be present. The MFH900 includes a brand new design for enhanced safety, serviceability and ease-of-use.

Features may include:

Powerful
  • 4.4 L Perkins® engine, FT4
  • 865,000 BTU output*
  • Max temperature output 180° F (82° C)
  • 88%+ heater efficiency
  • Hydraulic pump loop generates reliable heat in ambient temperatures down to -40° F/C
  • Rust-proof aluminum enclosure
  • 26-hour run time on one fuel and DEF fill
Safe
  • Flameless technology produces heat without an open flame
  • Safe to use in hazard zones in which ignitable fumes may be present
  • External E-stop switch for emergency situations
  • External duct connection lighting for enhanced safety
  • Comprehensive safety alarms and shutdowns
  • Positive air shutdown to prevent runaway engine
  • Lockable cabinet to prevent tampering and theft
  • 110% containment of engine fluids
  • DOT and Transport Canada compliant

Photos

Highlights

  • Fort Wayne, Indiana
  • 2025
  • Generac Power Systems
  • Flameless Mobile Heaters MFH900
  • Model: 120AF-E44TTA
  • Diesel
  • 6,590 lb (2,992 kg)
  • Available

Specifications

  • 2025
  • Generac Power Systems
  • Flameless Mobile Heaters
  • MFH900
  • General
  • Model: 120AF-E44TTA
  • Perkins®
  • EPA Final Tier 4
  • 4
  • 4.4 L (268.5 in3 )
  • @ 2,200 rpm: 140.8 hp (105 kW)
  • Dry type cartridge
  • Series turbocharged
  • Liquid cooled
  • Diesel
  • Two 12 V, 950 CCA, wet cell batteries
  • Fuel consumption rate: 7.9 gph (29.9 Lph) | DEF consumption rate: 0.312 gph (1.18 Lph) | Heat produced: Up to 865,000 BTU/hr (253.5 kW/hr) | Efficiency: Up to 85%
  • Minimum run time: 26 hr
  • Capable of operating at -40 to 100 °F (-40 to 37.8 °C) ambient—not considering derate factors | Heater Max Temperature: 120–180 °F (48.9–82.2 °C)
  • 3,500–5,000 ft3 /min (99.1–141.6 m3 /min)
  • Total: 200 US gal (757.1L) | Usable: 176 US gal (654.9 L)
  • Type: Flameless, self-contained | Wachendorf® controller and display
  • 10.3 qt (9.75 L)
  • 6,590 lb (2,992 kg)
  • 7,735 lb (3,512 kg)
  • 1 year, unlimited hours