Utah HVAC Pros
A sunlit attic space filled with blown-in insulation, wooden rafters, flexible silver ductwork, and a metal HVAC air-handling unit.

Duct Cleaning in Provo, UT

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Step 1 of 3: Equipment
Flexible insulated HVAC ducts and an air handler unit installed in a dusty attic with a skylight.

Nine months of forced air moves a lot of dust through your ducts

Your furnace runs September through May here, close to nine months of the year. Every one of those months, air is moving through your ducts, and whatever is riding in that air settles along the way. Dust, drywall dust from repairs, pet hair, all of it collects in the bends and the long runs where the air slows down.

With winter nights averaging 18°F, the furnace is working hard most of that stretch, pushing more air through the system than it would in a milder climate. A duct system carrying that much air for that many months builds up more than one that only runs a few weeks a year. That buildup can restrict airflow to the rooms furthest from the furnace and give the system more to circulate every time it kicks on.

9 months
September through May, your furnace pushes air through your ducts
2 months
July through August, your air conditioner does the same
Isometric line illustration of a cutaway house showing interior rooms with ductwork or piping running along the ceiling and mechanical equipment units.
Your ducts carry heat September through May and cooled air July through August.

NOAA nClimDiv, 1991–2020 normals

How often should air ducts be cleaned?
There's no set schedule that fits every home. Have a contractor look inside the ductwork if anyone in the house has allergies, if you've had a rodent problem, or if a renovation kicked up drywall dust. Homes with pets or smokers tend to build up dust and hair faster, so those ducts are worth checking sooner rather than later.
Is air duct cleaning worth it?
It's worth it if your ducts actually have a buildup problem, not just as routine maintenance. Dust that returns quickly after cleaning is a sign. So is a musty smell when the furnace or AC kicks on, or mold you can see near a vent. If none of that describes your home, a contractor can look inside the ductwork and tell you honestly whether it needs it.
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 before pulling it out through the vacuum. Access is usually through your existing vents, working room by room. The furnace or AC coil and the blower housing get cleaned too, since a lot of what's circulating through the ducts starts there.