Division 3.8 Remarks related to heat pumps using exhaust air as energy source

Heat pumps using exhaust air as energy source use ambient energy, and such heat pumps therefore supply renewable energy. But simultaneously such heat pumps recover the energy in the exhaust air, which is not aerothermal energy according to the Directive^f1. It is therefore only the aerothermal energy that is counted as renewable energy. This is adjusted for by correcting the H_HP values for such heat pumps as set out in Section 3.6.