Duct Cleaning in Centreville, MD
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Step 1 of 3: Equipment
Seven months of heating moves dust through the same ducts
Your furnace runs from October through April here, seven months of the year. On winter nights that average 28°F from December through February, it cycles on and off often to keep up, and every cycle pushes air, and whatever is riding in it, through the same ducts. Dust, pet hair, and the debris that settles in a duct system build up along the runs over a heating season that long.
That buildup does not stay put. Air moving through the ducts stirs it loose and carries it back into the rooms you are heating.
- 7 months
- October through April, your furnace pushes air through your ducts
- 4 months
- June through September, your air conditioner does the same
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NOAA nClimDiv, 1991–2020 normals
- How often should air ducts be cleaned?
- There's no fixed number of years that fits every home. It depends more on what's going on in the house. Pets, a recent renovation, someone with allergies, or dust building up around the vent covers faster than it should are all reasons to look sooner rather than later. A contractor can look inside the ducts and tell you whether they're due now or can wait.
- Is air duct cleaning worth it?
- It's worth it when the ducts actually need it, not on a set schedule regardless of condition. Dust, pet hair, and debris sitting inside the ducts get pushed into the air every time the furnace or air handler runs. Your furnace runs from October through April here, seven months of the year, so dirty ducts mean seven months of that debris circulating through the house. A contractor can check the ducts and tell you whether cleaning will make a real difference in your case.
- What does air duct cleaning involve?
- A contractor connects a vacuum system to the ductwork and uses brushes or air tools to loosen debris along the way. The vacuum pulls it out before it resettles further down the line. Each supply and return vent gets cleaned this way, along with the main trunk lines. The furnace or air handler and its coil usually get cleaned at the same time, since they sit in the same air path.