Ductwork is more susceptible to air leaks than most homeowners realize.
As much as 30% of heated or cooled air can be lost because of holes, cracks and improper connections.
Having the duct system regularly tested and serviced is essential to the operation of the furnace and air conditioner. Duct sealing ensures that the maximum amount of conditioned air reaches the rooms in the home, providing more consistent temperature from room to room. Flaws in the ducts can result in a room feeling overheated or chilly, making it impossible to achieve satisfying comfort. Leaks in a return duct can draw dirty air into the system and circulate it through the home. Particulates, pollen, dust and VOCS can be introduced into the breathing air. It’s possible for pests to make a home in the ducts. Bacteria and mold inside the ducts aggravates symptoms of allergy, asthma and other health issues. There’s even a safety risk. If the ductwork runs near appliances, a flaw can allow combustion gasses into the ventilation system. If these gasses are combustible, there is the potential for fire or explosion. When the heated or cooled air is allowed to leak out, energy efficiency suffers. The furnace and air conditioner are required to work harder and run longer. Along with higher utility bills, the greater wear and tear and shorten service life and increase the risk of repairs. It’s important to inspect the ductwork and invest in sealing when necessary. Professional sealing processes can reduce leakage down to 2%. The procedure coats the surfaces of the pipes with an antimicrobial compound that resists the growth and spread of toxins.