Ventilation systems require thermal insulation in order to restrict and control heat loss. In ducts that transport warm air, reduce unnecessary heat loss is financially and environmentally beneficial in terms of the corresponding reduction in energy use, and in terms of restricting unwanted heating of the surrounding environment.

Warm air
When transporting warm air through long ventilation ducts, the temperature of the air should be maintained at the specified temperature. If a specific heat loss is required, the installation specifications must be taken ito account when planning the insulation solution and its thickness.

Cool air
Ducts that transport cool air also need a good thermal insulation solution. Rather than preventing heat loss from within the duct, the purpose of the insulation is to maintain the lower temperature inside the duct by insulating them from the warmer ambient air temperature. If the cool air in the duct is heated by the surrounding air, not only will the HVAC system function less effectively, but more energy will be needed to maintain the duct's correct temperature. With properly insulated ducts, this is easily achieved, meaning the whole ventilation system can work as designed and less equipment calibration is required.