Since you don"t see your ducts most of the time (they are hidden behind gyprock, flooring, and rarely frequented rooms) it"s often hard to understand why they may need regular cleaning. However, the ducts in a home circulate air through them regularly that comes through the return vents; the air that enters the return vents contains debris, dust, hair dander, and pollution. Over the space of a year, this debris will begin to build up along the inside of the ductwork, and after three years this contamination level is often enough to begin to create problems for your home, the quality of your air, and the furnace.
To prevent the problems of dirty ductwork, you should schedule regular duct cleaning. Every 3– 5 years is recommended, although some homes may need it more regularly. The job requires professionals with power vacuums and agitation equipment; it isn"t something you can handle yourself using a dyson and a brush
To protect your IAQ: Indoor air quality has been on the decline since home design created more effective heat sealing. Duct cleaning removes a major source for air contaminants from inside a home, helping to keep it a healthier and more relaxed place.
To drop your heating and cooling bills: Even the thin layer of dust that can start to accumulate in ducts after only a year is enough to create friction against the airflow from an air conditioner or forced-air heater. Heavy congestion in the ventilation ducts can mean a comfort system that costs a 33% more to run.
To keep your place clean: Here"s a startling fact: a six-room home on average circulates forty pounds. of dust through its ventilation system every four seasons. Try to conceptualize that much dust spread over your home! If your home is filled with dust no matter how much effort you put in to keep it clean, a clogged ductwork system is most probably contributing to the problem. Cleaner ductworks mean a cleaner residence.