500,000 BTU'S
3,500 CFM
Oil / Diesel
Generator / IDF Heater


Ideal for applications where portable heat and a generator are needed for all types of construction projects. 500,000 BTU/HR of clean, dry heat. This heater is portable and simple to operate. All parts have easy access for quick service and routine maintenance. TD heaters meet OSHA standards and have CSA or ETL approval. Our heaters have been operating in extreme conditions in Northern Canada for over 20 years.


    • 18 years of proven performance in the harshest conditions
    • Few moving parts and intelligently designed
    • Huge, real fuel savings versus indirect-fired flamed heaters. (40%)
  • SAFE
    • Flameless heat is captured from the diesel engine and a patented low-pressure hydraulic fluid heat plate
    • Therm Dynamics heaters are certified to CSA/UL standards
    • Expectations are for over 12,000 hours of dependable service




    • Fuel: Diesel / Kerosene
    • Max BTU Available: 500,000 BTU/H
    • CFM: 4,800
    • Static Pressure: 3.5” W.C.
    • Discharge Temperature: 250°F
    • Efficiency: 82%
    • Highway Legal Trailer


    • Generator: Kohler ES 6500 Watts
    • Shore Power: 120 or 220V, 20 AMP / 60 HZ, 1.0 HP Electric Fan


    • Weight: 1,600 lbs Dry
    • Overall Length: 84″
    • Overall Width: 52″
    • Overall Height: 55″


    • 50 GALS(US) / 159 LITERS
    • Run Time
      • Shore Power: 16 HRS
      • Generator: 12.5 HRS
    • Max Fuel Burn: 4.0 G PH


Our versatile, portable heaters can be used in hundreds of applications including thawing frozen ground, heating buildings or structures, curing concrete, drywall/paint drying, and removing excess moisture to inhibit mold growth, and any other application that requires clean, dry, flameless heat.


  • The most fuel-efficient, durable, and reliable INDIRECT FIRED heater in its class. Whisper Quiet < 68 db while operating on Shore Power
  • Easy access for quick service and routine maintenance
  • Standard 16″ duct with optional “Step Down” to 2 x 12″ ducts
  • Beckett Burner, 82% efficient, “Multi Pass” stainless steel heat exchanger, Plenum fan
  • Kohler Generator “Commercial EV Series” ~ 6500 watts, completely portable heater, plus power for lights and tools
  • 4,800 CFM can accommodate up to 100′ of ducting 
  • Standard Duct Tube Storage
  • Simple to operate
    • Set to shore power or Generator
    • Turn on master switch
    • Push start
  • Black Heater “In” ~ preheat in extreme cold
  • Auxiliary Power “Out” ~ operate tools and lights
  • Shore Power “In” ~ whisper quiet operation, save on fuel
Copyright © 2023 Frend Therm Inc.. All Rights Reserved.
757 Henry Road, Box 150, Petersfield, Manitoba Canada R0C 2L0