Duct Cleaning in Winona, MN
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Eight months of heat pushes a lot of air through your ducts
Your furnace runs October through May here, eight months of the year. That's eight months of air moving through the same trunk lines and branches, carrying dust and whatever settles in the house over a Minnesota winter. On nights averaging 11°F, the furnace cycles hard to keep the house warm, and every cycle pushes more of that buildup through the system.
The county has seen 30 winter storms and 63 damaging wind events over the past ten years, and storms like these can knock out power. Statewide, 13% of households went at least 24 hours without power in 2024. When a furnace shuts down and restarts, it stirs up what has settled in the ducts and pushes it back into the rooms you're heating.
- 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 is no set schedule that fits every house, but a contractor can look at your ducts and tell you if they need it. If anyone in the house has allergies, or you have had rodents or a water leak into the ductwork, get it looked at sooner rather than later. Homes here run the furnace eight months of the year, October through May, so dust moves through the system more than it would in a house that barely uses heat or air conditioning.
- Is air duct cleaning worth it?
- It is worth it if you can see dust coming out of the vents, if a room never seems to get enough air, or if someone in the house has allergy or asthma symptoms that ease up when they are away from home. It will not fix a duct that is leaking air into the attic or crawl space, or one that was sized wrong to begin with. A contractor can look at the ductwork and tell you whether cleaning will actually help or whether the real problem is somewhere else.
- What does air duct cleaning involve?
- A contractor connects a vacuum to the duct system and uses brushes or air tools to knock dust and debris loose from the inside of the ducts, then pulls it out through the vacuum. The supply and return vents get cleaned too, along with the coil and blower compartment if they need it. A thorough job usually includes the furnace or air handler itself, since dust settles there as much as anywhere else in the system.