Whole-home duct cleaning
Dryer vent cleaning
Camera inspection
Sanitizing & deodorizingWhole-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 Dimas
HVAC cleaning in San Dimas means dealing with what the foothills throw at your system: Santa Ana dust, summer attic heat above 140°F, and decades-old flex ducts that crack under the strain. Most standard whole-system cleanings for a typical San Dimas home run $425 – $690. Larger hillside homes with two or three systems usually land between $900 and $1,400 because each unit gets its own written price before work starts. We know the tract homes off Arrow Highway and the newer estates near San Dimas Canyon Road, and we schedule around your day, not the other way around. Call (424) 688-1845 for a free estimate.
Why Cardinal Air Duct West Covina Is San Dimas’s Preferred HVAC Cleaning Company
Omar Haddad leads our team, and the reason San Dimas homeowners keep calling us back is simple: we hand you a written price before a single duct is touched, and that number does not change at the door. Every booking runs through The Relay Standard, which means you get a live trackable arrival window, before-and-after photo documentation of the actual work, and a digital invoice you can pay from your phone. No four-hour waiting windows. No vague estimates.
Our technicians are background-checked and arrive in uniform, so you know exactly who is walking through your door. They run Rotobrush rotary brush systems and Nikro HEPA-filtered negative-pressure vacuums, not truck-mounted shop-vac setups that stir dust around. And every job, without exception, is covered 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 is the longest satisfaction window in the trade.
We also answer the phone. A live person picks up 24/7, because when your air handler is grinding dust at 9 p.m., you shouldn’t have to leave a voicemail and hope.
Styles & brands we work with
Furnace Cleaning in San Dimas
Furnace Cleaning in San Dimas homes tackles what summers leave behind: a layer of fine dust and ash packed into the blower motor, the heat exchanger, and the return plenum. After months of Santa Ana wind pushing grit through the filter, your furnace is running with restricted airflow and a blower wheel that has to work harder than it should. In a San Dimas tract home with a 1980s furnace, that extra strain shows up as longer run times and uneven heat in the back bedrooms.
Blower and Heat Exchanger Service
We pull the blower assembly, clean the wheel fins, and inspect the heat exchanger for cracks or corrosion. A clogged blower in a San Dimas home can cut airflow by 20% or more. Furnace cleaning for a single system in San Dimas typically runs $180 – $290, depending on how much debris has accumulated and whether the heat exchanger needs treatment.
Coil Treatment and Airflow Check
After cleaning, we apply a coil treatment to the evaporator surface so dust doesn’t re-bond immediately. Then we measure static pressure and compare supply and return airflow. In older San Dimas homes, that measurement often reveals collapsed flex runs we then document with photos so you can see exactly what was blocking your air.
AC Vent Cleaning in San Dimas
AC Vent Cleaning in San Dimas is about more than wiping register covers. The supply runs and return ducts in a 1970s or 1980s home have been baking in attic heat for four decades, and the inner liners degrade. When we clean vents, we inspect every accessible run with a camera first, because what looks like a simple dust problem is often a collapsed 10-inch flex line starving a bedroom of air.
Supply and Return Duct Cleaning
We use negative-pressure extraction, meaning the loosened debris goes straight into a Nikro HEPA-filtered vacuum, not back into your living room. The Rotobrush system agitates the duct walls while the vacuum pulls everything out. After the cleaning, we photograph the inside of the ducts so you can see the before and after. AC vent cleaning alone for a standard single-system San Dimas home runs $250 – $420. For homes with long runs down a hillside, expect the higher end.
Register and Grille Restoration
We remove, wash, and re-seat every supply register and return grille. In San Dimas foothill estates, registers often carry a layer of ash from wildfire season that a standard filter never catches. We check that each register is seated and sealed properly so conditioned air isn’t leaking into the attic.
Common HVAC Cleaning Problems We See in San Dimas Homes
- Collapsed flex ducts in 1970s tract homes. The original flexible ductwork along Arrow Highway and Bonita Avenue has spent 40-plus summers in attics that regularly exceed 140°F. The inner liner separates, the duct collapses, and airflow to a whole wing of the house drops sharply. Cleaning alone won’t fix it; the failed run needs replacement.
- Santa Ana dust packing blower motors. The winds push fine silt through window seals and door gaps, past cheap filters, and onto the blower wheel. Bearings wear prematurely, and the motor runs hot. We see this constantly in San Dimas homes within a mile of the foothills.
- Long, undersized runs in hillside estates. Newer homes near San Dimas Canyon Road have high-end systems, but the runs from the air handler to the far bedrooms are long and often undersized. When they fill with debris, the system runs longer cycles, shortens equipment life, and still leaves rooms uncomfortable.
- Deteriorated insulation on original ducts. The fiberglass wrap on 1980s ductwork breaks down over time. That means conditioned air loses temperature inside the attic before it ever reaches a vent. We inspect the insulation condition and flag it in your documentation.
Pricing for HVAC Cleaning in San Dimas, CA
Here’s what you should expect to pay in San Dimas. A single-system furnace cleaning runs $180 – $290. AC vent and duct cleaning for one system runs $250 – $420. A complete HVAC Cleaning package covering furnace, coils, and ducts in one system typically runs $425 – $690. If your San Dimas home has multiple systems, we price each one separately and give you a written total before any work begins. That matters when a foothill home has three units and you’re trying to compare quotes. Call (424) 688-1845 and we’ll walk you through a line-item estimate on the phone.
See the difference
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After
Before
After
Before
AfterTrusted Brands We Service in San Dimas
We service and clean systems from every major manufacturer, and our technicians stock common parts for Honeywell and Aprilaire filtration units so San Dimas customers aren’t waiting on a part for a week. The equipment we run is professional-grade: Rotobrush rotary brush systems for duct agitation, Nikro HEPA-filtered vacuums for negative-pressure extraction, and Abatement Technologies containment units when the job calls for it. That’s the difference between a real HVAC cleaning and a guy with a shop vac. Your system gets the same care whether you’re in a 1979 tract home or a newer estate off San Dimas Canyon Road.
Why Per-System Pricing Matters in San Dimas
San Dimas has a housing mix you don’t see in most Los Angeles County suburbs. The original 1970s and 1980s tract neighborhoods around Arrow Highway and Bonita Avenue were built fast, with single systems and flexible duct runs that have now outlived their design life. The newer foothill estates near San Dimas Canyon Road and up toward the San Gabriel Mountains are different: larger footprints, multiple HVAC systems, and long duct runs that snake through conditioned and unconditioned spaces. A flat whole-house fee doesn’t reflect reality for either type of home.
When a San Dimas house has three separate systems, each one has its own blower, its own coil, its own set of ducts, and its own accumulation pattern. Pricing each system individually means you see exactly what you’re paying for and why. We document every system separately, with before-and-after photos for each. That documentation matters because HVAC cleaning is work you cannot see from your living room. You should not have to take anyone’s word for it.
In a three-system foothill home off San Dimas Canyon Road, our camera inspection found a collapsed 10-inch flex run in the attic above the master suite, its inner liner separated from years of 140°F heat. We performed source removal with HEPA-filtered negative pressure and replaced the failed run, restoring balanced airflow to all supply registers. That is the difference between cleaning around a problem and actually finding it.
For homeowners across San Dimas, that level of inspection is standard on every job. If a run is collapsed, we show you the photo and tell you it needs replacement. If the duct is intact but dirty, we clean it and show you the after. Either way, you know what happened inside your attic.
Serving San Dimas, CA - Our Local Coverage Area
We’re based in the San Dimas 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 Dimas
Because each system has its own blower, coil, duct layout, and debris load, and they rarely need the same amount of work. Per-system pricing gives you an honest line item for each unit instead of burying the cost of the worst system into a single inflated number. Call (424) 688-1845 for a written per-system quote before any work starts.
Santa Ana winds drive fine dust and ash into homes through every small gap, and much of it ends up in the blower and ductwork. Homes within a mile of the San Gabriel foothills often need cleaning every 2 to 3 years instead of the 3 to 5 years common further inland. If you’re seeing dust on surfaces within days of cleaning, your ducts are likely the source.
You should receive before-and-after photos of the inside of your ducts, a written summary of what was found and what was done, and a line-item invoice that matches the written estimate you approved. The Relay Standard includes all of that as standard on every San Dimas job. You should never have to guess whether the work was actually performed.
Collapsed flex ducts cannot be restored by cleaning. Once the inner liner separates and the duct loses its shape, airflow is permanently restricted and the run needs replacement. We’ll show you the camera footage so you can see the collapsed section yourself, then give you a separate written price for replacement. You approve it before we touch anything.
Yes. High-end systems filter better, but they still pull in fine dust from Santa Ana winds, and long duct runs in hillside homes accumulate debris over time. The coil and blower still need cleaning to maintain efficiency. What changes is the timeline, not the need. Newer systems typically hold up longer between cleanings, but the fine dust load in San Dimas means skipping it entirely still costs you efficiency and equipment life.
We Also Serve Cities Near San Dimas
Beyond San Dimas, our teams cover La Verne, Glendora, Covina, and Azusa. If you’re just outside the city, call us and we’ll confirm coverage for your address. The same written pricing, The Relay Standard, and the 365-Day Done Right Promise apply to every job we run in the area.
Call for a Free HVAC Cleaning Estimate in San Dimas
If your system is running long cycles, pushing weak airflow, or dusting your furniture a week after you clean it, the problem is probably inside your ducts. Call (424) 688-1845 and ask for Omar Haddad’s team. We’ll give you a written price before any work starts, a live arrival window you can track, and before-and-after photos of your own ducts. That’s how HVAC cleaning in San Dimas should work.
Written by Omar Haddad, Owner at Cardinal Air Duct West Covina, serving San Dimas and the surrounding foothill communities.