Since you don"t see your ducts most of the time (they are hidden behind sheet rock, floorboards, and rarely frequented rooms) it"s often a struggle to understand why they may need regular cleaning. The ducts in a building circulate air through them regularly that comes through the return vents; the air that enters the return vents contains debris, skin flakes, allergens, and other contamination. Over the span of a year, this debris will begin to build up along the inside of the ducting, 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 heating system.
To prevent the problems of contaminated ductwork, you should schedule regular duct maintenance. Every 3– 5 years is recommended, although some homes may need it more often. The job requires professionals with power vacuums and agitation equipment; it isn"t something you can handle yourself using a shop vac and a brush
To protect your indoor air quality: Indoor air quality has been on the decline since home design created more effective heat sealing. This heat sealing helps a house save money, but it also restrains fresh air circulation that can remove stale air from the in the house. Reduced indoor air quality can lead to an array of health concerns, most of them respiratory, and it is particularly harmful for people who suffer from asthma and allergies. Duct cleaning removes a major reserve for air contaminants from inside a home, helping to keep it a healthier and more comfortable place.
To lower your heating and cooling bills: Even the small amount of dust that can start to accumulate in ducts after only a year is good enough to create friction against the airflow from an air conditioning system or forced-air heater. The harder an AC or heater has to work to overpower friction, the more power it will use up, and you will see this reflected on your costs. Heavy congestion in the ventilation ducts can mean a comfort system that costs a third more to run. Keeping the “lungs" of your HVAC system clean will keep your bills down.
To keep your residence clean: Here"s a startling fact: a six-room home on average circulates 18 kilos. of dust through its ventilation system every year. Try to envision that much dust spread over your home! If your house is filled with dust no matter how much effort you put in to keep it clean, a clogged ductwork system is undoubtedly contributing to the trouble. Cleaner ducts mean a cleaner property.