How Much Does Air Duct Cleaning Cost in Sunnyvale, CA?

Nationally, professional air duct cleaning costs between $300 and $500. In the San Francisco Bay Area, including Sunnyvale and surrounding cities, expect $350 to $700 for a standard residential air duct cleaning. This reflects higher labor, insurance, and equipment costs in Silicon Valley.

Factors pushing toward the higher end include larger homes, multiple HVAC systems, significant contamination, additional services like sanitizing, and difficult access or complex configurations.

Home size and number of vents: A 1,200 sq ft home with 8 vents costs less than a 3,000 sq ft home with 20 vents. Number of HVAC systems: Larger properties may have multiple systems, each requiring separate setup. Level of contamination: Systems not cleaned in 15 years require more intensive work. Additional services: Dryer vent cleaning ($100-$200), sanitizing ($100-$300), and HVAC component cleaning add to the cost.

According to NADCA standards: pre-cleaning inspection, cleaning of all supply and return ducts, register cleaning, trunk line cleaning, proper equipment (truck-mounted vacuums with HEPA filtration), post-cleaning inspection, and before-and-after documentation. If a quote does not include all of these, you are not comparing apples to apples.

The "$99 Whole House" offer is the most common scam. Companies use lowball pricing to get in the door, then aggressively upsell, charge per-vent add-ons, or do minimal work. Professional duct cleaning requires thousands of dollars in equipment and 2-4 hours of labor. It cannot legitimately be provided for $99.

Other red flags: no pre-inspection, no NADCA certification, pressure to decide immediately, and no documentation of results. See our DIY vs. professional guide for more on choosing the right approach.

For most homeowners, absolutely. Benefits include improved indoor air quality, better HVAC efficiency, reduced dust, potential allergy relief, extended system lifespan, and peace of mind. Weighed against HVAC repair costs, higher energy bills, and health impacts, professional duct cleaning is one of the more cost-effective home maintenance investments.