Whole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents
That "$99 whole-house special" is a bait ad - the real number appears once they are in your hallway, or the "clean" is a shop-vac at the register. We photograph the inside of your ducts before and after instead.
Fast, Reliable HVAC Cleaning Across Los Altos Hills
HVAC cleaning in Los Altos Hills typically costs $350 – $650 per system, takes four to six hours, and should include camera inspection before a single duct is touched. That’s the honest range for a hillside home here, where most properties run multiple zones and duct runs that stretch past 100 feet. If a quote lands far below that, something got skipped. Call Cardinal Air Duct Cleaning at (737) 727-2314 and we’ll walk you through exactly what your system needs, in plain English.
Our HVAC Cleaning crews work throughout Los Altos Hills regularly, and we know what these homes throw at a system. Long flex-duct runs under insulation, multi-zone setups, detached accessory units, and the occasional rodent that found its way into a return chase. None of it surprises us anymore. The point is you get a real answer, a written price, and before-and-after photos of your own ducts.
Why Cardinal Air Duct Cleaning Is Los Altos Hills’s Preferred HVAC Cleaning Company
We don’t run short on time in Los Altos Hills. A whole-house HVAC cleaning here is not a two-hour job, and any company that treats it like one is cutting corners you’ll pay for later. Our technicians show up in uniform, background-checked, with names you know before they ring the bell. They run Rotobrush brush systems, Nikro HEPA vacuums, and Abatement Technologies containment units – professional equipment, not a shop-vac bolted to a van.
The work is backed by the 365-Day Done Right Promise. If the job isn’t right within a full year, we come back and make it right at no charge. Every booking also comes with The Relay Standard: a live trackable arrival window, before-and-after photo documentation, and a digital invoice you can pay from a link. No phone tag, no voicemail loops. A live person answers when you call, day or night.
Omar Haddad leads the team at Cardinal Air Duct Cleaning, and he holds every job to one standard: a written price before work starts, a written guarantee on every repair, and a free second visit if any repair fails. Los Altos Hills homeowners don’t have time for vague estimates that shift once the van is in the driveway. Neither do we.
Furnace Duct Cleaning in Los Altos Hills
Furnace Duct Cleaning in Los Altos Hills is a different animal than it is down in the flats. Hillside homes here often have supply and return trunks that exceed 100 feet, with flex duct buried under insulation in attics that hit 130°F in July. Debris compacts differently in long runs, and a quick once-over with a spinning brush won’t pull it out. You need negative-pressure extraction – that means the loosened debris goes straight into the vacuum, not back into your living room – plus agitation tools that reach the full length of the run.
When should you schedule it? If you see dust settling on furniture within hours of running the heat, hear a rattle in the trunk line when the blower cycles, or smell something musty when the furnace kicks on, it’s time. Homes along Page Mill Road and Summit Wood Drive with heavy tree cover tend to collect more debris in exterior returns. A typical furnace duct cleaning in Los Altos Hills runs $350 – $550 for a single-zone system.
Camera Inspection Before Cleaning
We send a camera down every trunk line before we touch anything. In Los Altos Hills, that step matters more than most places. We’ve found insulation fibers pulled into returns, rodent nesting in chases, and collapsed flex sections that no amount of brushing would fix. You see the photos before we start and after we finish.
Source Removal, Not Just Brushing
Brushes knock debris loose. Negative pressure pulls it out. If a crew skips the HEPA vacuum and just brushes, they’re moving dust around, not removing it. Our Nikro units hold the debris until it’s disposed of outside the home. The before-and-after photos of your own ducts prove the job was actually done.
AC Coil Cleaning in Los Altos Hills
AC Coil Cleaning in Los Altos Hills is the most overlooked maintenance item on a hillside home’s HVAC system. The evaporator coil sits inside the air handler, and when it gets caked with dust and pollen, your system works harder to move the same amount of air. In Los Altos Hills, where summer afternoons push 90°F on the western slopes, a dirty coil means longer run times, higher bills, and a shorter compressor life.
A proper coil cleaning here costs $180 – $320 as part of a whole-system cleaning, or $150 – $250 as a standalone job. We use a foaming coil cleaner that breaks down the film, then rinse with low pressure so the fins don’t bend. Final step is a coil treatment that slows future buildup. Most Los Altos Hills systems with multiple zones need coil cleaning every two to three years, more often if the home sits under oaks or eucalyptus.
Evaporator Coil Access
Hillside homes in Los Altos Hills frequently have air handlers tucked into tight mechanical closets or attic spaces with limited clearance. Getting to the evaporator coil takes patience and the right tools. Our techs carry compact inspection scopes and coil pullers sized for these installations.
Coil Treatment After Cleaning
After the coil is cleaned, we apply a guardsman-style treatment that keeps debris from re-adhering for months. It’s a small step that extends the time between cleanings and keeps your AC efficiency where it should be.
Trusted Brands We Service in Los Altos Hills
We service and clean all major HVAC brands across Los Altos Hills, including Carrier, Trane, Lennox, Rheem, and Goodman systems. On the filtration and equipment side, we stock Aprilaire media filters, Guardsman coil treatments, and Abatement Technologies containment units for jobs that require full source removal. Because we work in Los Altos Hills regularly, we keep the most common replacement filters and access panels on the truck. That means fewer return trips and a faster turnaround when a homeowner on Robleda Road or near Foothill College calls with a clogged filter rack or a blocked condensate line.
Common HVAC Cleaning Problems We See in Los Altos Hills Homes
- Long duct runs with poor return placement. Many Los Altos Hills homes have return chases that run through unconditioned attic space, pulling in insulation fibers and rodent debris. A camera inspection catches this before the cleaning starts.
- Multi-zone systems with inconsistent airflow. Homes here often have two or three zones, and the furthest registers from the air handler get starved for air. Cleaning every trunk line and balancing the dampers makes a noticeable difference.
- Decomposed flex duct under insulation. The Santa Cruz Mountain foothills get hot attics, and old flex duct breaks down. We’ve seen collapsed sections that were bypassing 40% of the airflow entirely.
- Detached accessory structures on shared systems. Guest houses, studios, and detached garages in Los Altos Hills are often tied to the main system with long, undersized runs. These need special attention during a full cleaning to pull debris from the far end of the line.
Pricing for HVAC Cleaning in Los Altos Hills, CA
We charge one flat price per system, agreed in writing before work starts. No per-vent pricing, no add-ons that appear after the tech gets inside. A single-zone furnace duct cleaning in Los Altos Hills runs $350 – $550. A full HVAC cleaning that includes furnace ducts, AC coil, blower, and air handler runs $450 – $650 per system. Multi-zone homes with detached units are quoted per system, and we’ll tell you the total before anything is touched.
Some companies quote per vent in Los Altos Hills. That’s a red flag here. Multi-zone hillside homes have 15 to 25 vents per system, so per-vent pricing either lands absurdly high or bait-and-switch low. We don’t do it. One flat price per system, and the invoice matches the quote. Call (737) 727-2314 for a free estimate.
We Also Serve Cities Near Los Altos Hills
Our HVAC Cleaning in Los Altos Hills team also covers nearby communities across the Bay Area and beyond, including Los Angeles, San Diego, San Jose, and San Francisco. If you’re outside Los Altos Hills proper, give us a call and we’ll let you know if we cover your area.
Serving Los Altos Hills, CA - Our Local Coverage Area
We’re based in the Los Altos Hills area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About HVAC Cleaning in Los Altos Hills
Every three to five years for most homes in Los Altos Hills, depending on tree cover, pets, and whether the home has undergone recent remodeling. Multi-zone systems accumulate debris faster because more duct surface area means more places for dust to settle. If you’re running your system year-round and seeing dust on furniture within 24 hours of cleaning, you’re due. Call (737) 727-2314 and we’ll help you figure out if cleaning is actually needed.
Per system, always. Los Altos Hills homes with long duct runs and multiple zones make per-vent pricing either misleadingly low or outrageously high. We give you one flat price per system in writing before work starts, and that price doesn’t change at the door. It’s the only honest way to quote this kind of work here. For an exact quote on your system, call us at (737) 727-2314.
Yes, and we usually recommend it. The furnace ducts and the AC coil share the same air handler, so cleaning one without the other leaves the job half done. In Los Altos Hills, a combined job typically runs four to six hours and costs $450 – $650 per system. We’ll confirm the total price before we start, and you’ll get before-and-after photos of the ducts and the coil.
At a hillside home in Los Altos Hills, the crew starts with a camera inspection of every trunk line, looking for insulation intrusion, rodent debris, and collapsed flex sections. Then they run agitation tools through each run while a Nikro HEPA vacuum pulls negative pressure to capture debris at the source. They clean the AC coil, blower motor, and condensate pan, then reassemble and photograph everything. It’s a full source removal, not a surface wipe.
No, we don’t, and no honest company should. A proper HVAC cleaning in Los Altos Hills takes two techs and several hours per system, especially on multi-zone hillside homes with long duct runs. Same-day promises lead to rushed work, skipped camera inspections, and no time for before-and-after photos. We schedule the time the job actually needs. Call (737) 727-2314 to get on the schedule.
Written by Omar Haddad, Owner at Cardinal Air Duct Cleaning, serving Los Altos Hills and the greater Bay Area. Part of the Relay Home Co. family, founded 2005.




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