Maintenance guide
How often should air ducts be cleaned?
Short answer: every 3 to 5 years for most homes — and sooner when something in the house says so. Here are the intervals we work to for all three systems.
The intervals we work to
Air ducts — every 3 to 5 years
Sooner with pets, allergies, a renovation, visible dust blowing out of the vents, or a system that has never been cleaned.
Dryer vent — once a year
This one is a safety item. Lint restricts the run and the dryer runs hotter. Book immediately if clothes need two cycles.
Chimney — inspected every year
The national standard asks for an annual inspection. Sweeping happens when the inspection shows soot or creosote buildup.
Clean your ducts sooner if any of these are true
- Someone in the house has allergies that flare up indoors
- You have pets that shed
- A renovation, demolition or flooring job just finished
- Dust visibly blows out of the supply vents
- A musty or burnt-dust smell when the system starts
- The home is older and the ducts have never been cleaned
Why the EPA won't give you a number
The U.S. EPA's guidance is deliberately not a schedule. Its position is that duct cleaning has never been shown to prevent health problems, that most dust in a duct sticks to the duct surface rather than entering the room, and that cleaning makes sense when there is a specific condition: visible mold, insects or rodents in the system, or so much dust and debris that it is blowing out into your home.
That is the honest version, and we repeat it to customers even when it costs us a booking. The intervals above are what we use as a planning tool — the inspection is what decides whether your system needs it now.
Reference: U.S. Environmental Protection Agency, “Should You Have the Air Ducts in Your Home Cleaned?” (EPA 402-K-97-002).
How we keep it simple
You don't need to track three calendars. Book any one cleaning and we visually inspect all three systems on the same visit, at no charge. You'll know exactly where your ducts, dryer vent and chimney stand, and what each one needs — with any extra work quoted separately and done only with your approval.
Frequency questions
+How often should air ducts be cleaned?
Every 3 to 5 years for most homes, and sooner if you have pets, allergies, a renovation just finished, or dust coming out of the vents.
+How often should a dryer vent be cleaned?
Once a year for most families. If clothes take more than one cycle to dry, don't wait for the next annual visit — book it now.
+How often should a chimney be swept?
Have it inspected at least once a year, and swept when the inspection shows buildup. Sweeping is driven by how much soot and creosote is in the flue, not by the calendar alone.
+Do I need to clean all three systems at once?
No. Most homes need them on different schedules. Book one cleaning and the other two get a free visual inspection, so you know where each one stands.
+Is dusty furniture a sign my ducts need cleaning?
Not on its own. Dust on furniture mostly comes from the room itself. The ducts matter when dust blows out of the vents, or when a visual check shows heavy deposits inside.
Keep reading
- Air duct cleaning in BostonWhat the job includes and what it costs, from $89.
- Dryer vent cleaning in BostonYearly cleaning from $79, usually done in under an hour.
- Chimney sweep & inspection in BostonAnnual inspection and sweeping from $89.
- Is air duct cleaning worth it?The conditions that make it worth paying for — and the ones that don't.
- What these cleanings cost in BostonOur starting prices and the red flags to watch for in a quote.