Duct Cleaning in New Brunswick, NJ
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Step 1 of 3: Equipment
Seven months of heat pushes a lot of air through those ducts
Your furnace runs October through April here, seven months of the year. On nights that average 26°F through the winter, it cycles on and off for hours at a stretch, and every cycle pushes air through the same ductwork. Dust, pet hair, and whatever settles in the return sit in those runs and get stirred up and recirculated all winter long.
When a storm knocks out power, as happened to 11% of New Jersey households for at least a day in 2024, the furnace sits idle and then kicks back on. That first cycle after a cold spell pushes whatever settled in the ducts back through the house.
- 7 months
- October through April, your furnace pushes air through your ducts
- 4 months
- June through September, 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 home, so watch for the signs instead. If anyone in the house has allergies, or you just finished a renovation that kicked up drywall dust and sawdust, that's a reason to clean them now. A musty smell when the furnace kicks on, or dust that seems to settle again the day after you clean, both mean it's time.
- Is air duct cleaning worth it?
- It's worth it when there's a real reason for it, not on a fixed schedule just to be safe. Visible dust coming out of the vents, a musty odor when the system runs, or debris you can see when you pull a vent cover are all reasons to have it done. Without any of those signs, most homes don't need it as often as people assume.
- What does air duct cleaning involve?
- A contractor connects a vacuum to the duct system and uses brushes or compressed air tools to knock loose dust and debris from inside the ducts, then pulls it out through the vacuum line. Every supply and return vent gets opened and cleaned, and the furnace or air handler itself often gets attention too since dust collects there. The job is done from inside the house, working room by room to reach every vent.

