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Ventech’s Liquid Heat Generator (LHG) is the ideal solution for Heavy Duty Trucks operating in cold weather environments. The LHG maintains engine operating temperatures and cabin comfort in the coldest climates, ensuring reliable diesel particulate filter regeneration with higher exhaust gas temperatures and engine load.

Key Applications:

  • Significantly reduce wasted fuel by minimizing idling

  • Rapidly reach full engine and cabin operating temperatures

  • Maintain optimum engine operating temperatures and cabin comfort in the coldest climates

  • Ensure reliable DPF regeneration with higher EGT’s and engine load


When other supplemental heater systems fail to work, the LHG can be relied upon to defrost windshields, defog windows, and maintain correct operating temperatures. Unlike complicated fuel-fired heaters, the LHG is simple to install, vehicle-specific, and requires no flame, fuel line, or exhaust.


Today, the LHG is adopted in hundreds of vehicles and industrial equipment throughout North America. The LHG eliminates the need for long idling times in heavy-duty trucks, saving fuel, reducing expensive wear and tear, and saving money for transportation departments and vehicle operators.


At a Glance

Cold liquid goes in.

Hot liquid comes out.

Highly efficient, rotational energy IN is converted to heat energy OUT at over 98%.

Hydraulic friction created by a toroidal vortex within the LHG heats the liquid.

This is similar to how a Torque Converter works.

how the liquid heat generator works.png
Greater than 98% Efficiency

No flame. No electricity. No exhaust.  No fuel lines. No maintenance.

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