Duct Cleaning in Shakopee, MN
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Eight months of heating pushes air through your ducts
Your furnace runs October through May here, eight months of the year. That is eight months of air moving through the same ducts, carrying dust back through the system and out through the vents into the house. With winter nights averaging 10°F, the furnace cycles on and off often through that stretch, and every cycle pushes more air through the ductwork.
Scott County has seen 35 winter storms and 53 damaging wind events over the past ten years, and storms like that knock out power. When the furnace stops mid-cycle, whatever was moving through the ducts settles instead of reaching the filter. Over eight months of heating, that settled dust adds up.
- 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, so most contractors go by condition rather than the calendar. If anyone in the house has allergies, or you've had work done that stirred up dust like a furnace replacement or a remodel, it's worth having them checked sooner. Homes with pets or a smoker inside usually need it more often too. If you can see dust coming out of the vents when the system kicks on, that's a sign to stop waiting and get it done.
- Is air duct cleaning worth it?
- It's worth it when there's a real problem to fix, like heavy dust buildup, a musty smell when the air kicks on, or signs of rodents or mold in the ducts. It won't lower your heating bills or fix an allergy on its own, so it's not something to do on a whim every year. A contractor can look at the ducts and tell you whether there's enough buildup to matter before you pay for the job.
- What does air duct cleaning involve?
- A contractor connects a vacuum to the duct system to pull it under negative pressure, then uses brushes or air whips to knock dust and debris off the inside walls so it gets pulled into the vacuum instead of blown into the house. The vents, the return grilles, and often the blower compartment get cleaned too, since dust collects there as well. The furnace filter should be replaced afterward since it's usually the dirtiest part of the whole system by the time the job is done.