Air Duct Cleaning Cost in 2026: Price per Vent
Air duct cleaning costs $550 on national average, with most jobs between $300 and $700. Expect $25 to $50 per supply vent, or $0.15 to $0.40 per square foot. Mold or vermin remediation pushes the bill to $800 to $1,500+.
Planning figures, not contractor quotes. How we calculate
Short answer
Air duct cleaning costs $550 on national average, with most jobs between $300 and $700. Expect $25 to $50 per supply vent, or $0.15 to $0.40 per square foot. Mold or vermin remediation pushes the bill to $800 to $1,500+.
Cost summary
Estimates per project. See the cited sources and methodology before using these figures for a decision.
| Cost level | Estimate |
|---|---|
| Low | $200.00 |
| Typical | $550.00 |
| High | $1,500.00 |
Calculate your planning range
Enter rates from your own quotes or research. We do not supply unverified local prices.
What you'll actually pay
Air duct cleaning costs about $550 on national average for a whole system, and most homeowners land between $300 and $700. The EPA and NADCA estimate $450 to $1,000 for a full heating and cooling system cleaning, which HomeGuide echoes as its average band.
The full spread runs from about $200 for a small vent-count job to $1,500 or more when mold, vermin, or heavy debris requires sanitizing and remediation. AllBetter's NADCA-certified contractor data puts the typical job at $300 to $700 and the contaminated job at $800 to $1,500+.
Two pricing languages dominate quotes: per vent ($25 to $50 per supply vent) and per square foot ($0.15 to $0.40). A 1,500 sq ft home at Angi's rates lands at $225 to $450, which shows why the national average sits where it does.
Sources: COIT: How Much Does Air Duct Cleaning Cost (2026), HomeGuide: Air Duct Cleaning Cost (2026), AllBetter: Air Duct Cleaning Cost (2026)
Cost by vent count
Per-vent pricing is the most transparent way to compare quotes. Supply vents run $25 to $50 each across Angi, HomeGuide, and This Old House, while return vents run $40 to $75 because they are larger and harder to access.
By vent count, 8 vents runs $200 to $400, 12 vents runs $300 to $600, 16 vents runs $400 to $800, and 20 vents runs $500 to $1,000. Count your supply and return vents before calling and you can sanity-check any quote in seconds.
Ask whether the per-vent price covers the full NADCA-standard service or just the vent openings. Cheap per-vent quotes often skip the trunk lines, coils, and blower components, which is most of the actual work.
Sources: HomeGuide: Air Duct Cleaning Cost (2026), Angi: Air Duct Cleaning Cost (2026), This Old House: Air Duct Cleaning Cost (2026)
Cost by home size
Priced by square footage, expect $0.15 to $0.40 per square foot. A 1,000 sq ft home runs $140 to $250, a 1,500 sq ft home runs $225 to $600, and a 2,000 sq ft home runs $300 to $800.
Larger homes scale up: 2,500 sq ft runs $375 to $1,000 and 3,000 sq ft runs $450 to $1,200. AllBetter's contractor data breaks it down as small homes $250 to $400, medium $375 to $600, large $550 to $850, and large with contamination $800 to $1,500+.
Square-foot pricing is a quick estimator, not a quote. Two same-size homes can differ wildly on vent count, duct type, and contamination, which is why reputable companies inspect before they price.
Sources: This Old House: Air Duct Cleaning Cost (2026), AllBetter: Air Duct Cleaning Cost (2026), Angi: Air Duct Cleaning Cost (2026)
What drives the price up
Scope is the biggest lever: a full NADCA-standard cleaning under negative pressure with agitation, component cleaning, and verification costs more than a vent-only blowout, and the cheap quotes are usually the blowout. Contamination is next: mold, vermin, or heavy debris pushes the job to $800 to $1,500+ with sanitizing.
Duct type matters. Flexible ducts need specialist equipment and gentler handling, so they cost more than rigid metal. Multi-system homes pay more per system, and legitimate add-ons like sanitizing, deodorizing, and dryer-vent cleaning stack on top.
Watch the upsell pattern the industry is known for: a suspiciously cheap flat rate that balloons on-site. Real $500 flat-rate jobs exist, but bait-and-switch upsells are common enough that Fixr and This Old House both flag them explicitly.
Sources: COIT: How Much Does Air Duct Cleaning Cost (2026), Angi: Air Duct Cleaning Cost (2026), AllBetter: Air Duct Cleaning Cost (2026)
How to hire without getting scammed
The NADCA ACR standard is your shield. A legitimate cleaning follows it: pre-inspection, negative pressure, agitation and extraction, component cleaning (coils, blower, drain pan), and post-verification photos. Any company that cannot describe this process is selling something else.
Get the scope in writing before work starts: which components are included, how contamination is handled and priced, and what the final number covers. Post-cleaning photos of the trunk lines and components are standard practice for NADCA-certified firms, not a favor.
Red flags: quotes far below $300 for a whole house, refusal to inspect first, and pressure to add sanitizing or sealant mid-job. A reputable company prices the inspection into the visit and hands you photos when it is done.
Sources: AllBetter: Air Duct Cleaning Cost (2026), COIT: How Much Does Air Duct Cleaning Cost (2026), This Old House: Air Duct Cleaning Cost (2026)
The EPA's honest caveat
Here is the part most duct-cleaning pages bury: the EPA says ducts should be cleaned as needed, when there is visible mold, vermin infestation, or excess debris, and that routine cleaning has not been proven to prevent health problems. That is the honest baseline.
It does not mean cleaning is a scam. It means the value case is situational: post-renovation dust, visible contamination, and allergy-driven households with dirty systems are the legitimate triggers. A clean-looking system in a home with no symptoms does not need the service. When the furnace itself is past its prime, replacement beats repeated cleanings; our furnace installation cost guide covers new-unit pricing.
Use that framing when a salesperson pushes an annual plan. The right question is not whether duct cleaning works in general, but whether your ducts show one of the EPA's as-needed triggers. If they do, the $300 to $700 typical price is money well spent. If the answer is that the ducts are shot, our ductwork replacement cost guide prices a full replacement.
Sources: COIT: How Much Does Air Duct Cleaning Cost (2026), This Old House: Air Duct Cleaning Cost (2026)
Sources
- Angi: Air Duct Cleaning Cost (2026) (accessed 2026-10-10)
- AllBetter: Air Duct Cleaning Cost (2026) (accessed 2026-10-10)
- HomeGuide: Air Duct Cleaning Cost (2026) (accessed 2026-10-10)
- This Old House: Air Duct Cleaning Cost (2026) (accessed 2026-10-10)
- COIT: How Much Does Air Duct Cleaning Cost (2026) (accessed 2026-10-10)
Frequently asked questions
How much does an HVAC project cost?
Air duct cleaning costs $550 on national average, with most jobs between $300 and $700. Expect $25 to $50 per supply vent, or $0.15 to $0.40 per square foot. Mold or vermin remediation pushes the bill to $800 to $1,500+.
Why is there a cost range instead of a single price?
Project costs move with scope, finish level, and local labor rates. This guide splits the national planning range into low, typical, and high levels, and the scope sections explain what pushes a project toward each end. Use the range to budget, then collect itemized contractor quotes for your exact project.
Are these figures contractor quotes?
No. They are national planning ranges compiled from published, cited sources, shown with their assumptions and limitations. Treat them as a budgeting starting point, not a bid. Our methodology page explains how every figure is sourced and reviewed.
