Overview: Air Duct, Dryer Vent & Chimney Cleaning
Three jobs share this category and they only look alike. A chimney sweep clears soot and creosote from a flue and reports on what the flue is in. Air duct cleaning pulls dust out of a forced air system. Dryer vent cleaning takes the lint out of the run between the machine and the outside wall. Plenty of crews advertise all three.
Book the chimney before the heating season, not in the middle of it. A sweep should inspect as well as brush: the liner, the crown, the cap and the damper. Creosote is what feeds a flue fire, and a cracked liner or a blocked flue can push carbon monoxide back into the house. Put an alarm on every floor whatever the sweep finds.
Duct cleaning earns its money after a renovation, after mice have been in the system, or when you can see debris blowing out of a register. It is not an annual chore. The coupon crews who sell it to every house usually run a shop vacuum into the first stretch of duct and leave.
A dryer that needs two cycles to dry a load is telling you the duct is packed. Use the state and city lists below to reach the crews covering your address.
Cost of Air Duct, Chimney and Dryer Vent Cleaning
Choose the system first. Air ducts, dryer vents and chimneys need separate estimates; a low per-vent offer may cover only part of the HVAC system.
| Service or scope | Planning range | What this covers |
|---|---|---|
| Whole HVAC system cleaning | $450–$1,000per HVAC system | One residential HVAC duct system, with supply ducts, returns and blower components itemized; larger homes and additional systems need separate pricing.Ask whether coil cleaning is included; an all-vent price alone does not define a full-system service.Included scope and possible extrasScope used for this estimate: Supply and return duct cleaning; Cleaning of the blower components named in the quote Outside this estimate: Additional HVAC systems; Duct repairs or mold remediation; Coil washing unless listed |
| Dryer vent cleaning | $125–$350per dryer exhaust run | Standalone cleaning and inspection of one residential dryer exhaust run with ordinary access.Included scope and possible extrasScope used for this estimate: Lint removal through the exhaust run; Inspection or airflow check listed by the contractor Outside this estimate: Duct replacement; Roof or difficult access surcharges |
| Chimney sweep with basic inspection | $140–$250per flue | One ordinary wood-burning fireplace flue, swept with a basic visual inspection; not a stove insert.Camera inspection, inserts and difficult deposits can change the total.Included scope and possible extrasScope used for this estimate: Sweeping; Specified basic inspection Outside this estimate: Glazed-creosote removal; Liner or masonry repairs |
| Level 2 chimney inspection | $150–$600per specified chimney-system inspection | A Level 2 inspection of one residential chimney system, including internal video examination and documented findings; specify whether one or two flues are covered.Confirm the written report, accessible areas and whether sweeping is extra.Included scope and possible extrasScope used for this estimate: Video examination; Written findings Outside this estimate: Sweeping unless expressly bundled; Destructive access; Repairs |
What changes the price
- Number of HVAC systems, flues or exhaust runs
- Roof height, vent length and equipment access
- Heavy buildup, damaged ducts or separately identified repairs
Ask before you book
- Which system components are included in the quoted price?Prevents comparing full-system cleaning with a vent-only promotion.
- Is the inspection level and camera report specified?Different chimney inspection scopes are not interchangeable.
- Will you show the condition before proposing extra treatment?Helps assess whether an added service addresses a documented problem.
Check the scope
A per-vent teaser price is not a whole-system total. Duct cleaning should address an identified need; do not assume every home needs routine cleaning.
Compare quotes wisely
Ask for a fixed total for the listed system and a separate price for any justified additional work.
How to read these estimates
These ranges combine published U.S. prices and cost guidance for the stated work. They are budgeting estimates, not offers from listed companies or a statistical national average. Confirm the total, included work and additional charges in writing.
U.S. planning estimates. Local quotes vary by location and the scope of work.
Frequently asked questions
How often does a chimney need sweeping?
It depends on the fuel and how much you burn, not on the calendar alone. A wood stove running all winter needs sweeping more often than a fireplace lit for the holidays, and unseasoned wood soots up a flue fast. Gas and oil appliances still need the flue looked at. Book before the heating season starts and let the sweep tell you whether the interval you are on is right.
Is air duct cleaning worth paying for?
Sometimes. It earns its money after construction or renovation dust, after a rodent or mold problem, or when you can see debris blowing from the registers. On an ordinary house with a filter that gets changed, it is not an annual job. Crews selling whole-house cleaning on a coupon tend to run a shop vacuum into a few feet of duct and call it done. Ask what reaches the trunk line.
What tells me a dryer duct is blocked?
Clothes that need two cycles, a load that comes out hot and still damp, a laundry room that feels like a sauna, and lint gathering around the outside flap. A flap that never opens while the dryer runs is the clearest sign of all. Long runs with several elbows, and crushed foil hose squashed behind the machine, are where lint packs in, and lint catches fire easily.
What should a chimney inspection cover?
The flue from top to bottom, the liner, the smoke chamber and damper, the crown and cap, the flashing where the chimney meets the roof, and any sign of animals getting in. Ask for it in writing, with photos or camera footage of the liner. A sweep who brushes and leaves without telling you the condition of the flue has done half the job.
Who handles a gas fireplace or its vent?
Anything involving the burner, the gas line or the vent connector belongs to a technician qualified on gas, not to the sweep, although some companies employ both. A sweep can still clear a blocked chimney serving a gas appliance and report on the flue. If a gas fireplace is spilling fumes, shut it off and get a gas technician out before anything else happens.
