Duct Cleaning in Carlisle, PA
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Step 1 of 3: Equipment
Eight months of heating keeps moving that air
Your furnace runs October through May here, with winter nights averaging 24°F. That is eight months of the year with air moving through the same ducts, day and night, carrying dust and pet hair into the trunk lines and back out through the vents.
Most homes in Cumberland County are single-family houses people own rather than rent, and a furnace that runs this long each year has that much more time to settle buildup into the bends and low points of the ductwork, then stir it loose again the next time it kicks on.
- 8 months
- October through May, your furnace pushes air through your ducts
- 3 months
- June through August, your air conditioner does the same
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NOAA nClimDiv, 1991–2020 normals
- How often should air ducts be cleaned?
- There's no fixed schedule that fits every house. Ducts that stay dry and clean at the intake don't fill up fast, so a lot of homes go a long stretch without needing it. Get them checked sooner if you notice more dust settling around the vents than before, or if someone in the house has started having more allergy trouble than usual.
- Is air duct cleaning worth it?
- It's worth it when there's a real reason behind it, not just as routine upkeep. If a vent is blowing out dust, if there's been rodent activity in the ductwork, or if a renovation left drywall dust in the system, cleaning solves a problem you can point to. Cleaning ducts that are already in decent shape won't lower your heating bills or make the furnace run better, so the value depends on what's actually in there.
- What does air duct cleaning involve?
- A contractor connects a vacuum to the duct system to pull it under negative pressure, then uses brushes or air whips to knock loose dust and debris from the inside of the ducts so it gets pulled into the vacuum instead of back into the house. Every supply and return vent gets opened and cleaned, and the furnace or air handler itself usually gets cleaned out too since that's where a lot of the buildup collects. A contractor can walk through what your particular system will need before starting.