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A residential attic with exposed wooden rafters, a flexible silver HVAC duct running along the floor, and an air handler unit lit by a beam of light from a small window.

Duct Cleaning in Reading, PA

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

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Step 1 of 3: Equipment
A metal HVAC air handler with attached flexible and rigid ductwork installed in an unfinished attic with exposed wooden rafters and fiberglass insulation.

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

Your furnace runs October through May here, close to eight months of the year. On nights that average 23°F in the coldest stretch of winter, it cycles on and off for hours at a time, pushing air through the same ductwork over and over. Every pass carries dust and pet hair and whatever else is in the house, and some of it settles in the duct instead of blowing back out through the vent.

Over a heating season that long, it builds up in the bends and low points of the system. A duct choked with it makes your furnace work harder to move the same air through the house.

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 single-story house with a dark shingled roof, showing interior rooms and a network of white ventilation ducts connected to a floor-mounted air handling unit.
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 is no fixed schedule that fits every house. Homes with pets, a recent renovation, or someone with allergies tend to need it sooner than others. If you notice dust building up around the vents or the system seems to be working harder than it used to, that is a better sign to go by than a calendar. A contractor can look inside the ducts and tell you whether cleaning makes sense now or can wait.
Is air duct cleaning worth it?
It depends on what is actually built up inside your ducts. If a contractor finds heavy dust, pet hair, or debris, cleaning it out helps air move the way it should and keeps that material from blowing into the rooms you live in. If the ducts are already reasonably clean, cleaning them again will not do much. A contractor can look inside and tell you which situation you are in before any work starts.
What does air duct cleaning involve?
A contractor uses brushes and a vacuum system to loosen and pull dust and debris out of the ductwork, working through the supply and return lines. The registers and grilles get cleaned too, and often the blower and coil, since those collect buildup the same way the ducts do. Once the loose material is out, the system gets sealed back up so nothing gets pulled back in through gaps.
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