I have a new heat pump furnace... and black soot is everywhere in my condo... what could cause this?
hvac1000
Dec 9, 2008, 05:51 AM
If the ducts were not cleaned before the new unit was installed the disturbance of the duct during the new install might have knocked a bunch of old dirt/debris loose allowing to to flow into your condo. All else is guess work but you could take a sample and have it analysed somewhere.