Source google image: http://www.qualiteconstruction.com/uploads/RTEmagicC_E13_schema-1_pompe-a-chaleur-air-air_01.png.png
Pompe a chaleur air air froid
Source google image: http://www.qualiteconstruction.com/uploads/RTEmagicC_E13_schema-1_pompe-a-chaleur-air-air_01.png.png