Duct Cleaning in Janesville, WI
Tell us about your home, and a licensed contractor who covers Rock County will get in touch.
Tell us about the job
It takes about a minute.
Step 1 of 3: Equipment
Eight months of heating leaves ducts loaded with dust
Your furnace runs October through May here, eight months of the year. That is a long stretch of air moving through the same ducts, and dust and pet hair settle along the duct walls where the airflow never quite reaches.
Rock County has seen 78 damaging wind events and 17 winter storms in the past ten years, and storms like that knock out power. When the furnace shuts off and then kicks back on, it stirs up what has settled in the ducts and pushes it back into the house through the vents.
- 8 months
- October through May, your furnace pushes air through your ducts
- 3 months
- June through August, your air conditioner does the same
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
NOAA nClimDiv, 1991–2020 normals
- How often should air ducts be cleaned?
- There's no fixed number of years that fits every home. If anyone in the house has allergies, or you have pets shedding into the return vents, cleaning more often makes sense. Homes here run the furnace October through May, eight months of the year, so dust and pet hair move through the system more than in places with a shorter heating season. If you've had rodents in the ducts or a renovation kicked up drywall dust, get it done sooner regardless of when the last cleaning was.
- Is air duct cleaning worth it?
- It depends on what's going on in your ducts right now. If you're seeing dust blow out of the vents, or you notice a musty smell when the furnace kicks on, cleaning solves a real problem. If nobody in the house has allergy symptoms and the vents look fine, the case for cleaning on a fixed schedule alone is weaker. A contractor can look at the actual ducts and tell you what's built up in there before you decide.
- What does air duct cleaning involve?
- A technician hooks a vacuum system to the ductwork and uses brushes or air tools to knock loose dust and debris, then pulls it out through the vacuum before it resettles somewhere else in the house. They'll go through the supply and return runs, the vents themselves, and often the coil and blower housing where dust collects. Some contractors also clean the furnace itself since it's connected to the same air path. A licensed contractor registered with the Wisconsin Department of Safety and Professional Services can walk through what your specific ductwork needs.