Duct Cleaning in Milwaukee, WI
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Eight months of heating pushes dust through the whole system
Your furnace runs from October through May here, close to eight months of the year. Every time it kicks on, air moves through the ducts and any dust sitting in them gets stirred up and pushed into your rooms. With winter nights averaging 18°F, the furnace is cycling on and off for hours at a stretch, and that is a lot of air moving through the same ductwork night after night.
Wisconsin also sees its share of power interruptions, and about 18% of households last year went without power for a full day or more. When the furnace stops and starts back up after an outage like that, whatever has settled in the ducts gets another push. Dust and debris that build up over a heating season like this end up back in the air you're breathing, not just sitting in the ducts where you can't see them.
- 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 go by what you notice. If dust settles again soon after cleaning, if anyone has allergies acting up, or if you've had a renovation or repair that left debris behind, that's when to call someone out. Homes here run the furnace October through May, eight months a year, so ducts that already need attention get used hard once the cold sets in.
- Is air duct cleaning worth it?
- It's worth it when there's a real reason behind it, not just as a routine chore. If you're seeing dust settle again soon after cleaning, or a musty smell when the air kicks on, or you know there's debris in the ducts from a renovation, cleaning solves that. It won't lower your heating bill or fix a furnace that's struggling, so if that's the goal, a contractor should look at the equipment itself first.
- What does air duct cleaning involve?
- A contractor connects a vacuum system to your ductwork, then uses brushes or air tools to knock loose dust and debris from inside the duct walls so it can be pulled out. They'll go through the supply and return ducts, and check the vent hood and registers throughout the house. Once the ducts are done, the filter should go in clean too, since a dirty filter puts the dust right back into air that just got cleaned.