How much does professional air duct cleaning service cost?

Professional air duct cleaning cost is not a flat fee; it varies by home size, duct condition, and the scope of work, and is confirmed after an on-site assessment. Most cost swings happen because the actual system layout and contamination level drive labor and equipment time. We regularly tailor quotes for Seattle homes with basements, attics, and crawlspaces, so pricing reflects your specific system, not a generic number. A technician’s note: a long flex run in a tight crawlspace can take twice the setup time of short, open metal trunks.

Expect your estimate to consider:

• Total number of supply and return vents and main trunks
• Accessibility (attic, crawlspace, finished basement) and required setup
• Duct type/condition (metal, flex, lined) and debris level (dust, soot, construction)
• Optional add-ons you choose (sanitizer, duct sealing, filtration or UV upgrades)

Ask for a written, per-system quote that lists counted vents and any add-ons before work begins. <br/> Updated: 2026-03-09 <br/> Need help in Seattle, WA? Call (425) 259-0550 or book online.