I always have my HVAC tech come in to run the duct work for our basements. The only reason I have him come in is to determine whether or not the system can support the added square footage. He has never came back and said we need additional unit's. I'm not sure he is checking the units properly. I think he just wants to come in get it done and go home. Maybe i'm wrong, but I would like to be able to check the units myself. Does anybody have any tips for this?
199.2 KB Views: 9,024