Duct Cleaning in Pittsburgh, PA
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Eight months of heating pushes a lot of air through your ducts
Your furnace runs October through May here, close to eight months a year. On winter nights averaging 24°F, it runs long and often, and every hour it runs is more air moving through the same ducts. Dust, pet hair, and whatever else settles in the trunk lines gets stirred up and pushed into the house again and again.
Allegheny County has seen 12 winter storms and 548 damaging wind events over the past ten years, and storms like that mean power blinks or goes out. When the furnace stops and restarts, or the system sits idle in a cold house, condensation can form inside the ducts. That damp buildup mixes with the dust already there, and it does not go away on its own.
- 8 months
- October through May, your furnace pushes air through your ducts
- 3 months
- June through August, your air conditioner does the same
NOAA nClimDiv, 1991–2020 normals
- How often should air ducts be cleaned?
- There's no fixed schedule that fits every home. Homes with pets, a smoker, or someone with allergies tend to need it more often than others. If you can see dust coming out of the vents or it's building up fast on furniture nearby, that's a sign to get it looked at rather than wait.
- Is air duct cleaning worth it?
- It depends on what's actually going on in your ducts. If they're full of dust and pet hair, or you can see it blowing out of the vents, cleaning them makes a real difference in the air you're breathing. If your ducts look fine and nobody in the house has allergy trouble, you're probably not gaining much by paying to have it done just because time has passed.
- What does air duct cleaning involve?
- A contractor connects a vacuum system to your ductwork and uses brushes or air tools to knock loose dust and debris, then pulls it out through the vacuum so it doesn't settle somewhere else in the ducts. They'll go through the supply and return lines and usually clean the grilles and registers too. The furnace or air handler often gets a look and a cleaning at the same time, since that's where a lot of the buildup starts.