What are the new Title 24 duct standards about?
As of October of 2005 new California Title 24 standards took effect. Title 24 as it relates to HVAC once concerned itself primarily with new construction. But the new standards affect the replacement market in ways unseen before. If you replace any of the three major components of your HVAC system (furnace, AC or evaporator coil) then you may be required to have your ducts tested for leakage. If your duct system exceeds a certain amount of leakage then you may be required to have them sealed. The same goes if you need to replace more than a certain amount of duct. A detailed explanation is here.
