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.
Air Duct Cleaning Before & After in West Covina, CA
Photos tell the truth faster than any sales pitch can. In West Covina, where the 10 and 60 freeways keep a steady layer of fine dust moving through the air, what’s living inside your ductwork gets real, fast. Below are recent transformations from actual service calls. Same neighborhoods you drive through every day. Same dust. Different outcome once we’re done.
Styles & brands we work with




Recent Transformations
Return Vent Blowout on a 1970s Track Home
Before
AfterThis older West Covina home near the South Hills had one return vent doing the work of three. The homeowner assumed the HVAC was dying because the furnace cycled constantly. We pulled the grille and found a mat of compacted dust, carpet fibers, and what looked like three decades of Golden Retriever. The fix was a full return-side cleaning with our Rotobrush system, followed by HEPA extraction with the Nikro vacuum.
The result: static pressure dropped noticeably, the furnace stopped short-cycling, and the homeowner called back to say the hallway no longer smelled “warm and dusty” when the heat kicked on. Sometimes the problem isn’t the equipment. It’s what the equipment is choking on.
Bathroom Exhaust Duct Packed with Years of Lint and Powder
Before
AfterThis call came from a condo complex near the West Covina mall. The bathroom fan ran loudly but moved almost no air. When we inspected the exhaust duct, we found a dense layer of lint, cosmetic powder, and moisture-hardened dust that had reduced the opening to about the width of a nickel. The fan motor was working fine. It was simply trying to push air through a plugged straw.
We cleaned the full exhaust run with negative-pressure extraction, meaning the loosened debris went straight into our HEPA vacuum instead of raining down into the bathroom. Afterward, the mirror stopped fogging during showers and the fan quieted to a normal hum. Omar Haddad, our owner, still jokes that some of these ducts have seen more powder than a Hollywood makeup trailer.
Whole-House Duct Cleaning After a Kitchen Remodel in Woodgate
Before
AfterRemodels are brutal on ductwork. This West Covina family had just finished a kitchen renovation in the Woodgate neighborhood, and within a week every horizontal surface in the house had a fine white film. Contractors do their best with plastic sheeting, but drywall dust finds its way into the supply registers and spread across the entire system.
We ran Rotobrush agitation through all supply and return lines, then pulled the loosened fine particles out with our Nikro HEPA extraction unit. We also replaced the furnace filter, which had gone from white to chalk in seven days. Within 48 hours the family stopped dusting and the lingering drywall smell was gone. If you just remodeled, don’t wait six months. Get the ducts done before you settle back in.
Smoker’s House Deep Clean Before Sale in the South Hills

A real estate agent we work with regularly called us before listing a property in the South Hills area of West Covina. The previous owner had smoked indoors for years, and every showing was going to hit buyers with that smell the moment the HVAC blower kicked on. The ducts themselves were coated in a tacky, yellowish film that held the odor and re-released it into every room.
We performed a full-system clean with agitation and HEPA extraction, then ran an antimicrobial deodorizer through the lines. The listing photos went up the following week, and the agent told us not a single buyer mentioned a smell. That’s the difference between a house that sits and a house that sells.
Dryer Vent Lint Removal That Prevented a Fire in Valinda

We don’t use the word “fire hazard” lightly, but this dryer vent in the Valinda section of West Covina was exactly that. The homeowner said clothes were taking two cycles to dry. When we accessed the vent run, we found compacted lint had filled the entire duct for several feet. Lint is fuel, and a hot dryer vent packed with it is one of the most common causes of house fires in Southern California.
Our team removed the blockage with professional rotary brushing and verified full airflow from the dryer to the exterior vent cap. Dryer cycles dropped back to a single run. If your dryer is taking longer than it used to, that lint isn’t disappearing on its own. Call us before it becomes something worse.
HVAC Coil and Supply Register Cleanup for an Allergy Sufferer

This customer near Galster Park had been running air purifiers in every bedroom and still waking up congested. The purifiers were treating the air. The problem was what the HVAC system was adding back into it. The evaporator coil was caked with dust and the supply registers had visible buildup on every louver.
We cleaned the coil, all supply and return registers, and the full duct network. The customer told us the morning congestion cleared up within the first week. Air purifiers help, but if the system delivering your air is dirty, you’re just filtering air after it’s already been contaminated.
Want Results Like These?
Every job above started with a phone call and a written price before any work started. That’s how we operate in West Covina, and it’s how we’ll operate at your house. Call (424) 688-1845 and we’ll schedule a time that works. You’ll know the technician’s name before they arrive.
Written by Omar Haddad, Owner at Cardinal Air Duct West Covina, serving West Covina, CA and the surrounding San Gabriel Valley since 2005.
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