Compressor installation including a compressor and a dryer which are mutually connected via a pressure pipe. The dryer includes a housing with a drying zone and a regeneration zone, and a rotating drum with a drying agent. The regeneration zone includes a first subzone and a second subzone. Two regeneration conducts connect to the pressure pipe, respectively a first regeneration conduit which connects to an inlet of the first subzone and through which compressed gas having a first temperature is guided, and a second regeneration conduit which connects to an inlet of the second subzone. The second regeneration conduit has a heating element for heating compressed gas flowing through the second regeneration conduit to a second temperature which is higher than the first temperature.