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 San Ramon
HVAC cleaning in San Ramon typically runs $425 – $685 for a full system cleaning and is usually completed in 3 – 5 hours. That’s the honest range most homeowners here pay, and we hand you a written price before a single duct is touched. Cardinal Air Duct Cleaning serves the entire San Ramon valley floor and hillside communities, from Twin Creeks to Gale Ranch and everything along Bollinger Canyon Road. Our crews know this city’s housing stock, its summer heat, and what that means for the ductwork running through your attic. Call (737) 727-2314 for a free estimate, and you’ll speak to a live person, not a voicemail.
Why Cardinal Air Duct Cleaning Is San Ramon’s Preferred HVAC Cleaning Company
San Ramon homeowners call us because we do something most duct cleaners in this area won’t: we show you the work. Every job includes before-and-after photos of your own duct interiors, taken with the same HEPA-filtered negative pressure system that pulls debris out of your system. That’s the Relay Standard, and Omar Haddad, who leads our San Ramon operations, enforces it on every single booking. No exceptions.
We run professional-grade equipment from Rotobrush and Nikro on every San Ramon job. A Rotobrush rotary brush system agitates the debris baked onto duct walls, and a Nikro HEPA vacuum creates negative pressure so dislodged dust goes straight into containment rather than back into your living room. Techs arrive in uniform, background-checked, and you know their name before they open the door.
Our 365-Day Done Right Promise means the job is backed for a full year. If something isn’t right within 365 days, we come back and correct it at no charge. That’s the longest satisfaction window in the trade, and it applies to every booking without exception. San Ramon customers also get a written guarantee on every repair and a free second visit if that repair fails.
Dispatch and scheduling are coordinated from the brand’s San Francisco Bay Area office, with crews serving San Ramon locally. Part of the Relay Home Co. family, founded 2005, Cardinal Air Duct Cleaning operates under The Relay Visibility Guarantee: a live trackable arrival time, photo proof of the work, and a digital invoice payable from your phone.
AC Duct Cleaning in San Ramon
AC Duct Cleaning in San Ramon means clearing the supply ducts, return ducts, trunk lines, and air handler of the dust, lint, and debris that accumulate as your cooling system cycles through the valley’s hot, dry summers. At Cardinal Air Duct Cleaning, this is not a quick register vacuum. We use rotary brush agitation and HEPA-filtered negative pressure to remove what’s actually on the duct walls, then photograph the results so you can see the metal again. A typical AC duct cleaning for a San Ramon home runs $425 – $685, flat per system, agreed before we start.
Evaporator Coil and Blower Work
San Ramon homes with AC systems often have evaporator coils coated in a film of dust and debris that blocks heat transfer and restricts airflow through the supply registers. We clean and treat the coil, clear the blower wheel, and inspect the condensate drain for algae buildup. Clean coils mean your system doesn’t work as hard to hit the temperature on your thermostat, especially during stretches when San Ramon stays in the 80s for weeks.
Air Handler and Return Duct Cleaning
In San Ramon’s 1990s and 2000s builds, especially around Twin Creeks and Dougherty Valley, air handlers and returns often pull air past poorly sealed filter slots. That gap lets unfiltered air bypass the filter entirely and coat the return ducts and air handler in grey grit. We open the handler, clean the blower assembly, and vacuum the return trunk so the air your family breathes actually passes through the filter first.
Furnace Cleaning in San Ramon
Furnace Cleaning in San Ramon addresses what winter does to your ductwork: the system runs more, static electricity builds, and fine dust from the valley’s dry air clings to the inside of supply and return lines. Say the word’s meaning plainly: we remove accumulated particulate from the furnace, blower, heat exchanger, and the duct runs themselves. A standard furnace cleaning in San Ramon costs $425 – $685 for the full system, with one flat price agreed before work begins.
Heat Exchanger and Burner Inspection
San Ramon winters are mild, but furnaces still cycle enough to deposit a film of dust on the heat exchanger and burners. That layer reduces efficiency and, left long enough, can produce a faint burning smell on the first startup of the season. We clean the exchanger and burner assembly during a full furnace cleaning, and our techs check for cracks or corrosion. Part of our HVAC Cleaning process includes a written report on the condition of these components.
Condenser and Outdoor Unit Cleaning
San Ramon hillside and valley floor homes both deal with pollen from the surrounding oak and eucalyptus, which cakes onto condenser coils outside. We clear the fins, straighten bent sections that restrict airflow, and treat the coil so it sheds debris more effectively. A clean condenser means your whole system runs more predictably whether it’s a 90-degree day in Gale Ranch or a winter evening in Windemere.
Trusted Brands We Service in San Ramon
Our San Ramon crews maintain and clean Carrier, Trane, Lennox, Goodman, Rheem, and Daikin systems as well as older units from York and Bryant. We stock common filters, coil treatments, and Guardsman filtration products so we can replace worn components on the spot. That means fewer return trips for you. If your system needs a specific filter size or an Aprilaire media replacement, we usually have it in the van when we arrive in San Ramon.
Common HVAC Cleaning Problems We See in San Ramon Homes
- Baked-on attic dust. San Ramon’s summer heat turns unconditioned attics into ovens, and dust inside flex duct and hard pipe bakes onto the walls. A simple vacuum pass won’t remove it. This is why we use rotary brush agitation before extraction on nearly every San Ramon job.
- Poorly sealed filter slots. In homes built in the 1990s and early 2000s across Twin Creeks and Dougherty Valley, we regularly see filter racks that don’t seal tight. Unfiltered air bypasses the filter and coats the supply trunks in grey grit, forcing the blower to work harder and recirculating dust throughout the house.
- Clogged condensate drains and algae. San Ramon’s warm summers create ideal conditions for algae growth in AC condensate lines. We clear the drain line and trap during a full cleaning, then apply a coil treatment that slows future buildup. Left alone, a clogged drain backs water into the air handler and can stain ceilings below attic units.
- Pollen-caked outdoor condensers. The oaks and eucalyptus around the San Ramon valley and hills drop pollen that clings to condenser fins all spring and early summer. We clean and straighten the fins, and treat the coil so it sheds pollen more easily through the rest of the season.
Pricing for HVAC Cleaning in San Ramon, CA
A full HVAC cleaning in San Ramon runs $425 – $685 for one system, depending on the number of air handlers, the size of the home, and how much debris has accumulated. We do not charge per vent. You get one written price per system before we start, and that number does not change at the door. If your home has two systems, the second is priced separately and disclosed upfront. Some companies in this area advertise a low per-vent rate for the visible registers, then only vacuum the easy branch lines while the trunk and return stay dirty. That is not source removal. Call (737) 727-2314 and we’ll give you an exact quote for your San Ramon home, free.
We Also Serve Cities Near San Ramon
Our crews work throughout the Tri-Valley and East Bay. You’ll find us in Dublin, Danville, Hayward, and Pleasanton, offering the same upfront pricing and before-and-after photo documentation. If you’re outside San Ramon proper but still in the area, give us a call. HVAC Cleaning in San Ramon is our home base, but the Relay Standard follows our crews into every neighboring community.
Serving San Ramon, CA - Our Local Coverage Area
We’re based in the San Ramon 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 San Ramon
Every 3 – 5 years, depending on pets, recent remodeling, wildfire smoke exposure, and how well your system’s filter seals. Homes in San Ramon’s 1980s – 2000s builds with flex duct in hot attics tend to accumulate debris faster than newer construction with better-sealed returns. If you haven’t had a cleaning in five years or you can see dust piling around supply registers, it’s worth a look. Call (737) 727-2314 and we’ll schedule a free inspection.
We open the supply and return plenums, agitate each duct run with a Rotobrush rotary brush, and run a Nikro HEPA-filtered negative pressure vacuum so dislodged debris leaves through containment, not into your home. Then we clean the blower, evaporator coil, and air handler, clear the condensate drain, and treat the coil. You receive before-and-after photos of your own duct interiors. One flat price per system is agreed before we start, and it does not change at the door.
Per system. One written price covers the entire HVAC system, including all supply and return ducts, the trunk line, air handler, blower, and coil. We never quote a per-vent rate. The per-vent model is how some companies get a low number on the phone and a much larger invoice after the tech arrives. Our quote is fixed before work begins. Call (737) 727-2314 for an exact figure.
We schedule San Ramon jobs on a planned calendar, usually within a few days to a week. A full HVAC cleaning takes 3 – 5 hours and involves opening the system, so it’s not a quick drop-in service. What we can do is give you a live trackable arrival window through The Relay Standard, so you’ll know exactly when the crew reaches your San Ramon home. No four-hour vague blocks.
Yes, we can add dryer vent cleaning to your HVAC cleaning booking. It’s a separate service with its own price, but our crews in San Ramon regularly do both during the same visit. A clogged dryer vent is a fire hazard, and adding it while we’re already at your home saves you a second appointment. Ask for it when you call (737) 727-2314 for your free estimate.
Written by Omar Haddad, Owner at Cardinal Air Duct Cleaning, serving San Ramon with honest duct cleaning since day one.




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