Construction of AHM units bases on the framework made of aluminum profiles. Casing consists of “sandwich” type panels filled with 50 mm thick mineral wool. There are 3 sizes of the units available with the efficiency from 34000 to 135.000m3/h intended for air processing in the scope of: filtering, heating, cooling, moistening. There is an opportunity of using the recirculation or heat recovery on the glycol exchanger. AHM units can be used as the serial units. Casing is available as the internal and roof version. Roof version is additionally equipped with air intake, air exhaust, flat or skewed roof, specially protected air throttling valves. Specially equipped with air throttling valves. These units can be installed on the leveled screed or on steel construction. They are available as a standard or special version.