Duct Cleaning in Concord, CA
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Step 1 of 3: Equipment
Six months of heating pushes dust through your ducts
Your furnace runs November through April here, and every time it kicks on it pulls air through the return and pushes it back out through the supply ducts. On nights averaging 41°F through the winter, the furnace cycles on and off often, and each cycle is another pass of air carrying dust and whatever else has settled in the house through that same ductwork.
Over six months that adds up to a lot of passes through the same ducts, and whatever the air carries each time settles a little more in the bends and the runs behind the walls.
- 6 months
- November 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 is no fixed schedule that fits every home. Pets, a recent renovation, or someone in the house with allergies are reasons to clean them sooner rather than later. If you see dust building up around the vent covers, or the air feels dusty again within days of a cleaning, that is a sign the interval is too long for your house.
- Is air duct cleaning worth it?
- It depends on what is actually in your ducts right now. Visible dust, debris, or signs of pests or mold are reasons cleaning will make a real difference to the air moving through your home. If the ducts are newer or were cleaned recently, there may be little to gain yet. A contractor can run a camera through the ductwork and show you what is there before you spend money on it.
- What does air duct cleaning involve?
- A contractor connects a vacuum system to the ductwork, then uses brushes or air tools to loosen dust and debris so it can be pulled out through the vacuum. Vent covers get cleaned on their own, and the furnace or air handler is usually cleaned too, since all the air in your house passes through it. Many contractors run a camera through the ducts before and after so you can see what came out.