The reason people say they want their ducts cleaned most often is indoor air quality. People that suffer from allergies, asthma, folks with respiratory illness and small children are most affected by poor indoor air quality. Most duct systems are not sealed well and pull in airborne contaminants like Bacteria, Mold Spores, Dust Mites, Insulation fibers and pollen. When your system is not running it gives these particles time to rest and pile up in your ducts, furnace and cooling coils. The best furnace filter will only remove what comes in contact with the cleaning surface. Your ducts will continue to get dirty if they are not properly sealed. The air that passes through the ducts travels in from the crawlspace or attic. By just cleaning your ducts you can remove years of dust and other allergens from the system, but there are a lot of other benefits like:
Makes your heating and cooling system run more efficiently- reducing your energy bills
Removes allergy triggers and dust from the duct system
Breathe cleaner air while at home
Duct cleaning & Replacement NYC