The ducts in your house are hidden from sight, so you won’t have a good idea about how much dust, dander, lint, and other debris builds up inside them over the years. To give you an idea, a six-person home circulates on average 40 lbs. of dust through the ventilation system annually. Plenty of that will stay on the duct walls, and the more that collects, the more dust it will catch. This eventually leads to ductwork with so much build-up that it affects the energy efficiency of the HVAC system and adds to the amount of debris and allergens blown out into the air.
Professional duct cleaning will restore the ducts to near-pristine condition and help significantly to improve the HVAC system. But how often does your home need this service?