Customer in Silo Condominiums on high floor requested preventative maintenance for three existing heat pump systems. Preventative maintenance was performed and master service technician also installed three carrier steam humidifiers, one each per system in home. Customer stated air is very dry and wanted to have the extra humidity. Installation was completed and customer extremely happy with quality of workmanship, professionalism, as well as the end result of greater humidity. Customer will recommend Advanced Heating & Cooling to everyone in his building.