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

Fast, Reliable Air Duct Cleaning Across Hillsborough

Air duct cleaning in Hillsborough typically runs $450 – $850 for a full system on a standard custom home, and most jobs are completed in half a day. Hillsborough’s housing stock is unlike anywhere else on the Peninsula: nearly all custom builds from the 1920s through the 1990s, many with finished attics, long ducted runs, and flexible duct buried behind plaster. That means the work requires more than a vacuum at the register. We clean the full system – supply and return sides – and we hand you a written price before a single duct is touched. Call (737) 727-2314 and you’ll reach a live person, not a voicemail loop.

Call (737) 727-2314

Our Air Duct Cleaning team works throughout Hillsborough regularly, and we know what these homes throw at us. Long runs. Hidden chases. Finished crawlspaces. Systems that haven’t been opened in decades. None of it surprises us, and all of it gets documented with before-and-after photographs of your own ducts. If you’re in Hillsborough and want to know what’s actually moving through the air in your bedrooms, we’ll show you.

Why Cardinal Air Duct Cleaning Is Hillsborough’s Preferred Air Duct Cleaning Company

Hillsborough homeowners tend to be direct. They want to know who’s showing up, what it costs, and whether the job was actually done. Our technicians are background-checked and uniformed, and their name is on the booking before they arrive. They run professional-grade equipment: Rotobrush rotary brush systems to agitate debris, Nikro HEPA-rated vacuums for negative-pressure extraction, and Abatement Technologies containment units when the job calls for it. That’s not a truck-mounted shop vac. That’s source removal.

Every job is backed by the 365-Day Done Right Promise. If the work isn’t right within a full year, we return and correct it at no charge. That’s the longest satisfaction window in the trade, and it applies to every booking without exception. No asterisks. No “select jobs only.” Omar Haddad leads the team, and the standard he sets is simple: the written price you get before we start is the price you pay when we finish.

We also operate under The Relay Standard. You get a live trackable arrival time, before-and-after photo documentation, and a digital invoice you can pay from your phone. If you’ve ever had a contractor hand you a crumpled paper slip and mutter a different number, you’ll notice the difference immediately.

Commercial Air Duct Cleaning in Hillsborough

Commercial Air Duct Cleaning in Hillsborough is a different animal from residential work, mostly because the systems are larger, older, and often patchworked over decades. A commercial building on or near El Camino Real might have multiple rooftop units, long trunk lines through drop ceilings, and years of accumulated dust from heavy foot traffic and tenant turnover. We clean commercial systems the same way we clean homes: full source removal, not surface vacuuming. That means every supply and return run gets agitated and put under negative pressure with HEPA filtration, and the blower cabinet and coils get inspected and cleaned as part of the job. A commercial job in Hillsborough typically runs $800 – $2,500 depending on system size and accessibility, and we’ll scope it and quote it in writing before work begins.

Full System Cleaning for Offices and Retail

When we clean a commercial system in Hillsborough, we’re not just vacuuming registers. We open access panels, inspect the blower, and clean the entire duct pathway. If the building has multiple zones, we treat each zone as its own job. You’ll get before-and-after photographs of the actual ductwork, not stock photos.

Video Inspection and Documentation

Every commercial job includes a video inspection of the main trunk lines before and after cleaning. For Hillsborough buildings with older duct systems – and there are plenty – this catches crushed flex, disconnected runs, and dead-end branches that a surface clean would never reveal. The footage is yours to keep.

Air Duct Cleaning Services in Hillsborough

Air Duct Cleaning Services in Hillsborough start with an honest conversation about whether you actually need the work done. On a custom home from the 1960s with a finished attic, the answer is usually yes, and the reason is usually the chase: a framed-in enclosure running through finished space that hides the return trunk and flex runs. That’s where dust, pet hair, and construction debris accumulate, and it’s also where a register-only cleaning never reaches. Our process is straightforward: agitate the duct interior with a Rotobrush system, pull everything out under negative pressure with Nikro HEPA filtration, and document it all with before-and-after photos. The flat rate for a standard Hillsborough home is $450 – $850 for the entire system.

Supply and Return Duct Cleaning

We clean both sides of the system. Supply ducts deliver conditioned air to your rooms. Return ducts pull air back to the blower. On Hillsborough’s older custom homes, the return side is often the dirtier of the two, especially when the return runs through a crawlspace or finished attic chase. We inspect both sides and clean both sides.

Full System Cleaning with Documentation

A full system clean covers the supply ducts, return ducts, blower cabinet, coils, and registers. You’ll receive before-and-after photographs of your own ductwork, plus a written report of what we found. If we see a disconnected flex run or a crushed duct behind plaster, we’ll tell you and show you the image.

Trusted Brands We Service in Hillsborough

Hillsborough homes run on equipment from every era, and we service systems regardless of brand or age. That includes filtration and equipment from Honeywell, Aprilaire, and Abatement Technologies. Our vans carry the parts and adapters needed for most standard-sized ducts in Hillsborough’s housing stock, which shortens turnaround on both cleaning and any follow-up repairs. If your system has a proprietary filter housing or an unusual register size left over from a 1970s remodel, we can typically handle it without ordering parts and rescheduling.

Common Air Duct Cleaning Problems We See in Hillsborough Homes

• Finished attic chases hiding flex runs. Many Hillsborough homes have return trunks running through finished attic spaces, which means the ductwork is behind drywall and insulation. A surface clean never touches it. We locate the runs with camera inspection and clean them properly.
• Long ducted runs that lose pressure. Hillsborough’s custom homes are large, and the duct runs are long. If the system wasn’t balanced well, the far bedrooms get weak airflow. Cleaning plus register rebalancing often makes a noticeable difference in room comfort.
• Crushed or disconnected flex duct behind plaster. In older custom systems, flex duct can separate or collapse where it passes through framing. A disconnected return means the system is pulling air from the crawlspace or attic instead of the house. Our camera inspection catches this.
• Per-vent pricing surprises. A crew quotes a low per-register price, then counts 18 – 25 registers on a large Hillsborough home and the final bill doubles. We don’t do per-vent pricing. One flat price for the entire system, agreed before we start.

Pricing for Air Duct Cleaning in Hillsborough, CA

We Also Serve Cities Near Hillsborough

While this page focuses on Hillsborough, our team regularly handles duct cleaning in nearby markets. We serve Los Angeles, San Diego, San Jose, and San Francisco with the same flat-price system and the same 365-Day Done Right Promise. If you’re just outside Hillsborough and want the same standard of work, call us and we’ll confirm coverage for your address.

FAQs About Air Duct Cleaning in Hillsborough