By Paul Scelsi The homeowner makes the phone call to the HVAC contractor because the air conditioning system isn’t cooling the house like it should or it’s not working at all. During the service call, the HVAC contractor might discover that besides fixing the air conditioning system, the attic ventilation could use some attention. That’s a likely possibility because in our poll of residential roofing contractors across North America spring 2019, 77% of the homes… Read More