• Solutions for Diesel Pickup Trucks
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    Solutions for Diesel Pickup Trucks

    Ventech LHGs are being installed on pickups, lengthening engine life, improving Diesel Particulate Filter (DPF) Regeneration and providing quick defrost to the windshield and quick comfort for the occupants.


  • Beat the Cold Bus Blues
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    Beat the Cold Bus Blues

    Up to 90,000 BTUs of cabin heat within 15 minutes of start-up. More heat in less time. The LHG has no fuel lines, No emissions. Reduced idling, fuel consumption and engine wear and maintenance.

  • Solutions for Diesel Generators
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    Solutions for Diesel Generators

    Eliminate generator wetstacking and give your engine a boost in cold weather applications with the Ventech LHG.

  • LHGs for the Harshest Climates
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    LHGs for the Harshest Climates

    The Arctic LHG enables a vehicle to reach and maintain operating temperatures even in the harshest climates. Tested and proven on the Northern Slopes of Alaska.

  • Solutions for Industrial Equipment
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    Solutions for Industrial Equipment

    The LHG by Ventech has been applied to many Industrial equipment needs, delivering longer engine life, and a more comfortable environment for crews.

  • Auxiliary Power Units
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    Auxiliary Power Units

    Ventech LHGs are working in the harshest climates as a critical component of the Puritan Arctic Heat Generator. These APUs are helping to keep truckers and their trucks operating at peak performance.

Introducing the all NEW (Fall 2016) Ventech Liquid Heat Generator LHG700

The Ventech Liquid Heat Generator (LHG) is a revolutionary Rapid Auxiliary Heating System available for many vehicle applications.

For Fall 2016, Ventech has introduced the new LHG700; a more compact and higher performance Rapid Supplemental Heater that replaces the earlier LHG513 and LHG600 models.
The Ventech LHG provides near instant heat for comfort and safety of the vehicle  occupants. Vehicle Warm Up times are typically reduced by over 50% or more.

The Ventech LHG helps solve key issues in many transportation and vehicle applications.

This includes reduced idling, less fuel consumption, decreased emissions, and improved engine life-cycle resulting in cost reductions and improved air quality.

The Ventech LHG can significantly improve the Diesel Particulate Filter (DPF) Regeneration process.

The Ventech LHG is not a fuel-fired heater. It uses no combustion, has no fuel  lines, and does not require maintenance.



  • Close-to-instantaneous Engine & Cabin Heat
  • ~50% Reduction in Warm-Up Time
  • ~50% Less Idling
  • Rapid Windshield Defrost
  • Significant Improvement in Comfort & Safety
  • Less Emissions & Wasted Fuel
  • Improved DPF Regeneration
  • No Flame, No Fuel Lines, No Exhaust, No Maintenance
  • Installs in 2-4 Hours

The Ventech LHG is Low Cost, Simple, and Very Effective, producing > 45,000 Btu’s within seconds of engaging.

New for the Fall of 2016 - Advanced LHG700 MicroController with Quick-Diagnostics Indicators.

For 2016, Ventech also introduces the new 2nd Generation Microcontroller ECM (Electronic Control Module) with built-in Diagnostics for quick installation, startup, and debug.

The LHG will only engage under the right conditions. If the certain temperatures  or the engine RPM are too high(or too low), the LHG clutch deliberately won't engage. With the new Quick-Diagnostics Indicators, any single Red condition indicator (LED) will prevent the LHG Clutch from engaging, while all the Green condition indicators must be present for the clutch to engage.

That's all there is to it. A simple and foolproof way to better understand the operation of the 2016 LHG700 and to aid in fault finding should something go wrong.

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