Did you know that ducts play an important role in indoor air conditioning? Ducts distribute the conditioned air from your unit into and throughout the house. They are usually found in houses that have installed forced-air conditioning systems, i.e. heating and cooling systems. Typically, houses that have ducted air-conditioning systems lose about 20% of the air that flows out of the duct system. This may be due to poorly connected ducts, leaks or holes in the ducting system. … Continue Reading