Hecht 3021 is an diesel hot air turbine suitable for heating ventilated area, such as construction sites, new buildings and etc. and it is also suitable as a backup source of heat. Fuel tank capacity is 19 l, the consumption is approximately 2 l / h. Thermal heating power is 70,000 Btu. Maximum recommended heating area is 166 m2.

Gas hot air turbine. Power consumption 57 W. Heat output 12–30 kW. Consumption 1.07–2.13 kg / h. Heating space 280 m2. Degree of protection IP44. Weight 6.5 kg.