Duct Cleaning in Concord, NH
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Step 1 of 3: Equipment
Nine months of heating pushes a lot of air through your ducts
Your furnace runs from September through May here, nine months of the year. Every hour it runs, air moves through the same trunk lines and branches, carrying dust and whatever else has settled there.
Winter nights here average 14°F, cold enough that the furnace cycles on and off many times a day to hold the house steady. Each cycle pushes more air, and more of what has built up in the ducts, into the rooms you live in.
- 9 months
- September through May, your furnace pushes air through your ducts
- 2 months
- July through August, 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 schedule that fits every home, so a contractor should look at your ducts before you decide. If anyone in the house has allergies, or you've had renovation work that stirred up dust in the attic or crawlspace, it's worth checking sooner rather than later. Homes with pets tend to need it more often too. Since your furnace runs from September through May here, it's pulling air through the same ductwork most of the year, which is reason enough to have someone check them.
- Is air duct cleaning worth it?
- It depends on what's actually built up inside your ducts. If you can see dust collecting around your vents, or your furnace has been running for months pulling air through the same ductwork, cleaning them keeps that dust from blowing back into the rooms you live in. It won't lower your heating bill or fix a furnace problem, but it does mean cleaner air moving through the house. A contractor can look at your ducts and tell you if there's enough buildup to make it worth doing now.
- 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 from inside the ducts, then pulls it out through the vacuum. They'll also check the supply and return vents, and often the coil near your furnace or air handler, since dust collects there too. The filter isn't part of the ductwork itself, it just cleans the air passing through, so it gets replaced separately rather than cleaned.