HVAC Cleaning in Los Altos - One Flat Price, Before-and-After Photos

Fast, Reliable HVAC Cleaning Across Los Altos

HVAC cleaning in Los Altos typically runs $350 – $650 for a full system on a 1,400 – 2,200 sq ft home, and most jobs are completed in a single visit. That’s the honest number, not a teaser price that changes once our tech steps inside. Cardinal Air Duct Cleaning serves all of Los Altos, from the ranch homes north of El Camino Real up through the hills off Page Mill Road, and we bring professional-grade equipment to every job. If you’re noticing dust settling back on surfaces days after cleaning, or a musty smell when the blower kicks on, call (737) 727-2314 and we’ll walk you through what’s actually going on.

Call (737) 727-2314

Why Cardinal Air Duct Cleaning Is Los Altos’s Preferred HVAC Cleaning Company

Omar Haddad has built this Los Altos location around one standard: a written price handed to you before any work starts, and before-and-after photos of your own ducts so you can see exactly what was done. No exceptions. Our technicians arrive in uniform, background-checked, with Nikro HEPA vacuums and Rotobrush agitation tools. They’ll tell you their name before they knock.

What sets us apart in Los Altos specifically is how we treat older ductwork. We know that homes off Springer Road and along Miramonte Avenue often have original sheet-metal runs sealed with dried-out mastic, and we inspect before we clean. You’ll see what we see through the camera. The 365-Day Done Right Promise backs every job: if the work isn’t right within a full year, we return and correct it at no charge. That’s the Relay Standard and it applies to every booking without exception.

Our HVAC Cleaning team handles everything from air handlers to heat exchangers, and we schedule Los Altos jobs directly through our San Francisco Bay Area dispatch office. A live person answers calls around the clock, so you’re never leaving a voicemail and hoping.

Furnace Duct Cleaning in Los Altos

Furnace Duct Cleaning in Los Altos usually runs $400 – $650 for a full system, and it’s the service we recommend most often for homes built between the 1950s and 1970s. These older ranch and Eichler-style houses typically have rigid sheet-metal ducts running through unconditioned attics and crawlspaces, where mastic sealant has dried and cracked over five or six decades. The ducts leak at the joints, pulling attic air into the system. Cleaning alone does not fix that, which is why our furnace duct cleaning includes a camera inspection and collar resealing where needed.

What Gets Cleaned

We clean the supply and return runs, both plenums, the blower motor, the blower housing, and the filter rack. In Los Altos homes with the original sheet-metal runs, we use a combination of agitation tools and HEPA-filtered negative pressure, so loosened debris goes directly into the vacuum, not back into your living room.

When It’s Needed

A furnace duct cleaning makes sense when you see dust building up on registers within days of wiping them, or when the blower motor accumulates visible caking. If you just changed your filter and the airflow is still weak, collapsed or disconnected flex connectors in the attic may be the real culprit. That’s something we check on every job here.

AC Coil Cleaning in Los Altos

AC Coil Cleaning in Los Altos typically runs $180 – $350 depending on access, and it usually addresses odors and poor cooling on homes with central air. The evaporator coil sits inside the air handler and pulls moisture from the air as it cools, which means dust in the air sticks to the wet coil and bakes into a layer of grime over time. In older Los Altos homes, that grime often carries a musty smell and forces the compressor to run longer than it should.

Evaporator Coil Cleaning

We access the coil, apply a professional coil cleaner, and flush it thoroughly. The key is capturing the runoff, not just blasting it through the pan and into the condensate line. A blocked condensate line in a Los Altos attic can overflow and damage ceilings below, so we inspect and clear the line as part of the service.

Condenser Coil Cleaning

The outdoor condenser coil collects dust, pollen, and grass clippings all summer. On Los Altos lots with mature oaks and redwoods, that debris packs into the fins quickly. Cleaning it restores proper heat exchange and reduces strain on the compressor. We recommend checking it every two years at minimum, and more often if you garden or mow near the unit.

Trusted Brands We Service in Los Altos

We work on equipment from every major brand, including Trane, Carrier, Lennox, Rheem, Goodman, and Bryant, and we stock common filters and replacement parts locally for Los Altos customers. Our team uses Nikro HEPA extraction units and Abatement Technologies containment systems on every job, because older duct systems here need professional-grade negative pressure, not a shop vac. When your equipment needs a new filter or media, Honeywell, Aprilaire, and Guardsman products are available for most system types. We keep fast turnaround reasonable because we stock what these Los Altos homes actually use.

Common HVAC Cleaning Problems We See in Los Altos Homes

• Dried-out mastic on original sheet-metal ducts. Homes built between the 1950s and 1970s across North Los Altos and the Country Club area often have original rigid ductwork. The sealant at every joint dries out, and then attic air leaks into the supply side constantly.
• Disconnected flex connectors near the air handler. We see this often on systems that were partially retrofitted. One loose collar can pull dusty attic air directly into the supply, bypassing the filter entirely. A camera inspection shows it quickly.
• Dirty blower motors and heat exchangers. The blower motor moves every cubic foot of air you breathe, and in older Los Altos systems it is often coated with years of dust. The heat exchanger can also collect film that affects efficiency and odor.
• Furnace smell after years without service. A musty odor when the AC kicks on usually means the evaporator coil and drain pan have never been cleaned, or worse, attic air is being pulled into the return. We find this on many Los Altos systems that have not been opened in a decade or more.

Pricing for HVAC Cleaning in Los Altos, CA

We Also Serve Cities Near Los Altos

Cardinal Air Duct Cleaning serves Los Altos plus the surrounding communities across the Peninsula. We regularly schedule work in Mountain View, Stanford, Palo Alto, and Portola Valley, and we know the housing stock differences between each. For more on our Los Altos coverage, see HVAC Cleaning in Los Altos for a full local breakdown.

FAQs About HVAC Cleaning in Los Altos