Indirect Fired Heaters

Therm Dynamics TD500 IDF-GSE — Indirect-Fired Heater

The Therm Dynamics TD500 IDF-GSE is an indirect-fired diesel-hybrid heater that can run its electrical equipment from shore power or the built-in Kohler generator. The 2025 factory sheet rates it at 500,000 BTU/h and 4,800 cfm, with a Beckett burner and multipass stainless heat exchanger. It supports diesel or aviation kerosene, a standard 16-inch outlet and an optional two-way duct adapter. The manufacturer offers a highway-legal trailer option; the listed dimensions and dry weight describe the heater itself.

Specs & manuals ↓
Back to HVAC

Estimated equipment rental only. Delivery, taxes and applicable fees quoted separately. Final pricing confirmed with dispatch.

Specifications

Equipment

Manufacturer
Therm Dynamics
Model
TD500 IDF-GSE

Equipment specifications

Published maximum heat rating
500,000 BTU/h
Airflow
4,800 cfm
Fuel
Diesel or aviation kerosene
Maximum static pressure
3.5 in water column
Dry heater weight
1,600 lb
Heater dimensions, L × W × H
84 × 52 × 55 in
Discharge temperature
250°F / 121°C
Published efficiency
82%
Generator
Kohler Commercial EV Series; 6,500 W
Shore-power requirement
120 or 220 V; 20 A; 60 Hz
Electric fan motor
1 HP
Fuel capacity, U.S. value
50 US gal
Published runtime, shore power
16 h
Published runtime, generator
12.5 h
Maximum fuel burn
4.0 US gal/h
Burner
Beckett
Heat exchanger
Multipass stainless steel
Standard outlet duct
16 in
Optional outlet adapter
16-in to two 12-in outlets
Published maximum duct length
100 ft
Duct storage
Standard duct-tube storage
Auxiliary equipment
Block-heater input and auxiliary power output
Power modes
Grid/shore power or built-in generator
Trailer configuration
Highway-legal trailer available as factory option

Equipment Details

Capabilities & Features

  • Shore-power or onboard-generator operation
  • Beckett burner and stainless multipass heat exchanger
  • Auxiliary power for tools and lighting
  • Service-access panels
  • Standard duct storage

Available Options

  • 16-in to two12-in duct adapter
  • Remote thermostat
  • Highway-legal trailer
Become Operational

Need this on a mission profile?

We scope, qualify and deploy the right fleet — managed end to end, tracked on GC.