Gas appliances, such as stoves and furnaces, emit combustible gases like carbon monoxide. When ducts are not working correctly, these gases can be drawn back into the house, making the air toxic. Additionally, if ducts are leaking, outside air can be pulled in, which may contain contaminants such as dust, pollen, or mold spores. This can lead to allergies and other respiratory issues, such as asthma, and can even cause mold growth.
Insects and rodents can also enter ducts through holes and form colonies inside them, clogging the ducts of the heating, ventilation and air conditioning system. This can damage the system and increase heating and air conditioning costs. Organizations that specialize in pipeline cleaning, such as the EPA, NADCA, NAIMA, and SMACNA, do not recommend the routine use of sealants to encapsulate contaminants in any type of duct. However, sealants may be appropriate in certain cases such as repairing damaged fiberglass insulation or combating fire damage to ducts.
Pest infestations can also saturate ducts with contaminants that are harmful to health and reduce indoor air quality. It is essential to have a qualified expert inspect your ducts for any damage or potential safety risks. They will know the appropriate concentration so as not to damage the ducts or endanger plants, pets or people who live in your home. If your ventilation system was not properly installed or is aging considerably, you may need duct repair services.
