A residential attic with flexible silver HVAC ductwork connecting to an air handler unit, surrounded by blown-in fiberglass insulation and exposed wooden rafters.

Duct Cleaning in Minneapolis, MN

Tell us about your home, and a licensed contractor who covers Hennepin County will get in touch.

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment
A silver foil-insulated flexible air duct running through an attic filled with loose fiberglass insulation and wooden roof framing.

Eight months of heating pushes a lot of air through your ducts

Your furnace runs October through May here. On the nights that average 10°F, it cycles on and off for hours at a stretch, pulling household dust and pet hair through the same trunk lines and branches over and over. That is a long season for buildup to settle inside ductwork.

Hennepin County has also seen 33 winter storms and 142 damaging wind events over the past ten years. When storms knock out power, the furnace and its filter stop running too, and dust keeps drifting into ducts that are not being filtered at all. Once the power comes back, that buildup is still sitting there, and the furnace just pushes it through the house again.

8 months
October through May, your furnace pushes air through your ducts
3 months
June through August, your air conditioner does the same
Isometric cutaway illustration of a house interior showing ductwork running from a furnace through rooms with furniture, a bathroom, and a bedroom, under a shingled roof.
Your ducts carry heat October through May and cooled air June through August.

NOAA nClimDiv, 1991–2020 normals

How often should air ducts be cleaned?
There's no set schedule that fits every home. If anyone in the house has allergies, or pets are shedding into the return vents, ducts need attention more often than a house without either. A contractor can look inside the ductwork and tell you what's actually built up in there, which is a better guide than any fixed timeline.
Is air duct cleaning worth it?
It's worth it when there's a real reason behind it, not just on a schedule. Dust blowing out of the vents when the furnace kicks on, a musty smell, or ductwork that's never been touched since the house was built are all good reasons. Cleaning ducts that are already in decent shape won't do much, since the filter is what's supposed to be catching the dust and debris in the air, not the ducts themselves.
What does air duct cleaning involve?
A contractor connects a vacuum to your duct system to pull air through it while brushing or agitating the inside of the ducts to loosen dust and debris. Every supply and return vent in the house gets cleaned this way, along with the main trunk lines. Some contractors also clean the blower compartment and coil, since those collect dust too and sit right in the airflow.