Air Duct Cleaning in Daly City - One Flat Price, Before-and-After Photos

Fast, Reliable Air Duct Cleaning Across Daly City

Air duct cleaning in Daly City typically runs $350 – $650 for a full residential system, with most jobs completed in a single visit. Our crews are dispatched from the San Francisco Bay Area office and carry the tools to handle Daly City’s specific problem: decades-old galvanized steel ductwork corroding in persistent fog, with mold growing inside returns year-round. Call (361) 326-5060 for a written estimate before any work starts.

Call (361) 326-5060

We know Daly City’s housing stock. The post-WWII tract houses in Westlake, the split-levels off Skyline Boulevard, and the stucco-clad homes near Serramonte all share ductwork that was never designed for this much moisture. Our Air Duct Cleaning team treats every job as a moisture-and-microbial issue, not just a dust removal. That’s the difference between a clean that lasts and one that doesn’t.

Why Hollis Air Duct Cleaning Is Daly City’s Preferred Air Duct Cleaning Company

Hollis has been part of the Garrison Partners family since 2004. The Garrison Standard means written prices, written guarantees, and technicians who arrive inside the quoted window. In Daly City, that standard matters more than most places because the work is harder. Fog infiltration, corroded steel, and crushed runs from old remodels are not quick jobs.

Our technicians are background-checked and uniformed. You know who is walking into your home before they arrive. The 365-Day Done Right Promise covers every job in writing: if the work fails within a year, we return and make it right at no charge, including a free second visit.

Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops. No callback queues.

Air Duct Inspection in Daly City

Air Duct Inspection in Daly City starts with pulling the return registers and running a camera through the trunk lines, because the damage we find here is different from drier inland markets. A typical inspection runs $150 – $250 and includes a written report with photos of what we found inside your system. Most Daly City homeowners book an inspection when they notice a musty smell that doesn’t go away, or when their HVAC airflow drops in rooms farthest from the air handler.

What We Look For in Fog-Belt Ductwork

We check for black mold streaking on galvanized steel returns, corrosion at the joints, and crushed or disconnected branches from past remodels. The marine layer keeps metal duct interiors damp enough that surface rust turns into pinhole leaks, which pull crawlspace air into the system. We document every finding with photos you can see before we quote any repair.

Video Inspection and Written Report

Our camera inspection gives you a dated, written record of your duct condition. If we find mold, corrosion, or crushed runs, the report includes line-item pricing to fix each issue. Nothing moves at the door. The price you see on the report is the price you pay.

Residential Air Duct Cleaning in Daly City

Residential Air Duct Cleaning in Daly City means agitating and extracting debris from supply and return ducts, then treating the system for mold and moisture because dust is rarely the only problem here. A typical whole-home cleaning runs $350 – $650 depending on system size, accessibility, and whether we find mold requiring antimicrobial treatment. Homes with original 1950s galvanized steel ductwork usually need the higher end of that range due to corrosion and joint separation.

Negative-Air Extraction with HEPA Filtration

We connect a Nikro negative-air machine to your air handler and seal the registers. This creates suction through the entire system while we run rotary brushes from Rotobrush to knock debris loose. The HEPA filter captures particles down to 0.3 microns, so nothing recirculates into your living space during the job.

Antimicrobial Treatment for Marine Layer Conditions

Standard cleaning removes dust and debris. In Daly City, we also apply an antimicrobial treatment to return trunks and supply branches where moisture has allowed mold to colonize. Without this step, the musty smell returns within weeks because the fog keeps the metal damp. We include moisture-control recommendations in every written report.

Trusted Brands We Service in Daly City

We carry professional-grade equipment from Rotobrush, Nikro, and Abatement Technologies, and stock filtration products from Honeywell, Aprilaire, and Guardsman for Daly City homeowners who need upgraded protection against the marine layer’s constant moisture. These are the same tools commercial crews use in hospitals and schools, not hardware-store vacuums with a brush attachment. If your system needs a filtration upgrade after cleaning, we install what we stock. No waiting on parts.

Common Air Duct Cleaning Problems We See in Daly City Homes

• Black mold in Westlake returns: The combination of original galvanized steel and decades of fog infiltration creates perfect conditions for mold growth inside return trunks. We find this regularly in 1940s – 1960s tract houses where the ductwork has never been opened.
• Corroded joints pulling crawlspace air: Daly City’s damp coastal air rusts steel duct seams from the outside in. Once the seal fails, the system pulls unconditioned, often moldy air from crawlspaces and attics directly into your living space.
• Crushed supply branches from old remodels: Split-level and stucco-clad homes throughout Daly City have ducts routed through tight spaces where later construction boxed in or flattened runs. Air never reaches the register, and the homeowner blames the HVAC unit.
• Condensation in unheated chase ways: Ducts running through exterior walls or uninsulated attics collect moisture that drips back into the system, re-wetting any cleaning within months if the root cause isn’t addressed.

Pricing for Air Duct Cleaning in Daly City, CA

We Also Serve Cities Near Daly City

Our crews work throughout the northern Peninsula and coastal San Mateo County, including Daly City and neighboring Brisbane, South San Francisco, San Bruno, and Pacifica. The same marine layer conditions affect ductwork across this corridor, though Daly City’s density of original post-WWII housing makes its problems more concentrated. We schedule Daly City jobs with local routing to keep arrival windows tight.

FAQs About Air Duct Cleaning in Daly City