Duct Cleaning in Lewistown, MT
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Step 1 of 3: Equipment
Ten months of heating pushes air through your ducts
Your furnace runs from September through June here, ten months of the year. That's ten months of air moving through your ductwork, carrying dust and whatever else has settled in the lines back into your rooms.
Wind is part of that too. Fergus County has logged 147 damaging wind events over the past ten years, and wind pushes dust and debris into a house through every gap it can find. That works its way into the ducts along with everything else, and with the furnace running most months, it builds up rather than blowing through.
- 10 months
- September through June, 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. If anyone in the house has allergies, or you've had rodents or water damage in the ductwork, get it looked at sooner rather than later. Homes here run the furnace and blower from September through June, nearly ten months a year, so dust moves through the system more than it would in a place with a shorter heating season. A contractor can look at the ducts and tell you whether yours need cleaning now or can wait.
- Is air duct cleaning worth it?
- It depends on what's actually in your ducts. If you can see dust building up at the vents, if the system smells musty when it kicks on, or if someone in the house has unexplained allergy symptoms, cleaning is worth doing. If none of that applies, it's not urgent. Cleaning ducts that are already reasonably clean won't improve air quality much, since the filter is what catches particles as air moves through the system, not the duct walls.
- What does air duct cleaning involve?
- A contractor connects a vacuum system to the 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 usually check the vents, the return, and the blower compartment too, since debris collects there as well. The job covers the ducts themselves, not the furnace or air conditioner, though a contractor may point out other issues they notice while they're in there.