Best Duct Cleaning Companies in San Francisco, CA
Duct Cleaning in San Francisco: standards + transparent process
Duct cleaning quality is determined by the equipment (HEPA-filtered negative-pressure rigs, not shop vacs) and the process (whole-system, not duct-only). NADCA certification is the industry standard. Here is what each of the 2 pros below publishes: In California, HVAC contractors must hold a CSLB C-20 license — verify on cslb.ca.gov before paying any deposit.
Top picks
- Years: 45+
Consistently strong customer feedback (4.9★ from 1,915+ Google reviews).
Google 4.9★ (1,915+)
- Years: 15+
Consistently strong customer feedback (5.0★ from 800+ Google reviews).
Google 5.0★ (800+)
Typical Duct Cleaning costs in San Francisco, CA (2026)
Last updated
Estimated ranges for San Francisco, CA. Actual cost varies with home size, equipment, and scope — always request a written quote for your job.
| Service | Typical range |
|---|---|
| Duct cleaning (whole-home) | $440–$1,000 |
| Dryer vent cleaning (professional) | $125–$315 |
| Evaporator coil cleaning (in-place) | $190–$565 |
| Duct sealing (Aeroseal or similar) | $1,900–$4,400 |
See how San Francisco compares to 90+ US cities: HVAC Cost Index →
Why San Francisco's microclimates change what 'HVAC' work actually needs
San Francisco's fog, ocean breezes, and steep microclimates push different heating and cooling loads across short distances. Choose providers who size equipment for multiunit vintage buildings and compact flat layouts. Search for the best HVAC companies in San Francisco, CA with experience in humidity control.
How do San Francisco homeowners tell a licensed "HVAC" contractor from an amateur?
- Is duct cleaning actually necessary, or is it always upsell?
- Necessary after rodent infestation, post-renovation construction dust, visible mold growth, or 10+ years since last cleaning in a high-pollen or dusty area. Skip "annual cleaning" recommendations — the NADCA 2025 ACR Standard explicitly notes routine annual cleaning isn't evidence-supported.
- How do I avoid the "$99 whole-home duct cleaning" scam shops?
- Ask for NADCA certification, a written scope that itemizes supply + return + main trunk, and confirmation they use source-removal (vacuum-out) rather than blow-and-go fogging. The $99 ads almost always upsell to $800+ on-site for "mold treatment" the home doesn't need.
- How should homeowners evaluate indoor-air-quality or duct-cleaning claims in San Francisco?
- Ask for before-and-after measurements and specific IAQ methods used. Reputable providers reference testing methods, filtration MERV ratings, and whether services follow HERS or Title 24-related ventilation requirements.
- How often should a homeowner in San Francisco schedule preventive HVAC maintenance and filter replacement?
- Schedule preventive maintenance annually and change filters according to household conditions. Coastal microclimates and high humidity can increase service needs, so ask providers for a maintenance plan tailored to local conditions.
- How do I get a quote from these HVAC companies?
- Submit one request on this page and we send it to the vetted HVAC pros in San Francisco, CA listed here. They send quotes back — no obligation.