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.
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AfterFast, Reliable HVAC Cleaning Across Covina
HVAC cleaning in Covina for a typical ranch home runs $425 – $685 for a full system clean: supply and return ducts, evaporator coil, blower motor, and air handler. That’s a flat price per system, agreed in writing before a single duct is touched. We serve all of Covina, from the tree-lined streets north of Badillo to the newer subdivisions off E. Cypress Street and the neighborhoods around Covina Park. Our crews know these homes because we’ve worked in hundreds of them. Scheduling is coordinated from our Los Angeles office, but the technicians who show up at your Covina door are background-checked, in uniform, and carrying professional-grade gear. Call (737) 727-2314 for a written estimate, or keep reading to understand exactly what this work involves and what it honestly costs.
Why Cardinal Air Duct Cleaning Is Covina’s Preferred HVAC Cleaning Company
Covina homeowners call us because we answer the phone with a real person and hand over a written price before any work starts. That’s the Relay Standard, and it applies to every booking without exception. Omar Haddad leads our Covina crews, and when you book, you’ll know the technician’s name before they ring the bell. No anonymous subcontractors, no van with a magnetic sign that changes weekly. Our techs run Rotobrush agitation systems paired with Nikro HEPA vacuums for negative-pressure extraction, which means loosened debris goes straight into the vacuum, not back into your living room.
Every HVAC cleaning in Covina is backed 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’s not a limited warranty on select parts; it covers the entire job. We also photograph the inside of your ducts before and after, so you see exactly what came out. Most Covina customers tell us the before photos alone are worth the call, especially in older homes where the return trunks haven’t been touched since the Nixon administration.
We’re part of the Relay Home Co. family, founded 2005, and held to The Relay Visibility Guarantee. You get a live trackable arrival window, photo documentation of the work, and a digital invoice payable from your phone. That’s how a modern home service should run.
Evaporator Coil Cleaning in Covina
Evaporator coil cleaning in Covina typically runs $180 – $320 when done as part of a full HVAC cleaning, and it’s the single most impactful service for cooling performance in our dry San Gabriel Valley summers. The evaporator coil sits inside the air handler and pulls heat and humidity out of your air. Over years, it collects a mat of dust and grime that forces the system to run longer to hit the thermostat setting. We remove the access panel, apply a commercial-grade coil cleaner, and rinse with low pressure so the fins don’t bend. On Covina’s older ranch homes, this coil has often been neglected for a decade or more.
When Covina homeowners need it
If your AC runs but the house never quite gets cool on August afternoons, or your energy bill climbs year over year without explanation, the evaporator coil is usually the culprit. We see it constantly in the original split systems installed across Covina’s 1950s and 1960s subdivisions.
Why it costs what it costs
The price covers safe access, coil cleaner rated for aluminum and copper fin combos, and the labor to do it without bending fins or cracking the drain pan. We also apply a coil treatment afterwards to help resist re-soiling during the next season. It’s a repair-grade service, not a spray-and-walk.
AC Duct Cleaning in Covina
AC duct cleaning in Covina runs $285 – $425 for a typical home when priced as a standalone service, and most homeowners who book it do so because a room at the far end of the house never gets airflow, or because they pulled a register cover and saw what looked like a small animal living inside. The work involves running a rotary brush through the supply and return trunk lines while a HEPA vacuum pulls negative pressure at the air handler. That’s the only way to remove debris without blowing it into your bedrooms.
What camera inspection reveals in Covina ranch homes
Covina’s housing stock is dominated by 1950s and 1960s ranch homes built before flex duct and modern filtration existed. The supply and return ducts in many Covina attics are original galvanized metal trunk lines with short branch runs. Those trunks collect decades of settled debris that a camera inspection often reveals even when the visible registers look clean. We always run the camera first, because it changes the job. A flat price over the phone without a look inside is a guess, and guesses are how homeowners get surprised.
Why negative pressure matters
Negative-pressure extraction means the vacuum at the air handler is pulling air out of the duct system while the brush agitates debris. Everything that comes loose travels toward the collection point. Skip this step and run a spinning brush through original galvanized ductwork, and you knock debris loose into the living space instead of capturing it at the source. That’s the difference between cleaning and just rearranging the dust.
Trusted Brands We Service in Covina
We stock parts and filters for the systems Covina homeowners actually run. That includes Honeywell media filters, Aprilaire whole-home filtration, and Guardsman air purifiers, plus OEM-sized access panels and gaskets for the older split systems scattered across Covina’s ranch homes. Our techs arrive with Rotobrush brush systems, Nikro HEPA vacuums, and Abatement Technologies containment units when the job calls for sealing off the work area. You won’t wait three days for a part to ship from a warehouse in Ohio. If your system is original to a 1962 build on a street like E. Badillo or N. Citrus Avenue, we’ve seen it before and we know what it needs.
Common HVAC Cleaning Problems We See in Covina Homes
- Collapsed or disconnected trunk lines in attics. Original galvanized ductwork from the 1950s and 1960s sags, separates at seams, and sometimes collapses under insulation weight. A camera inspection finds this before cleaning starts, so you’re not paying to clean a duct that’s actually leaking conditioned air into the attic.
- Evaporator coils caked with lint and pet hair from return ducts. Covina’s ranch layouts often pull return air from a central hallway, which draws debris from every room. That debris lands on the coil and bakes on over time, cutting airflow by 30% or more.
- Rodent and bird debris in attic ducts. Older Covina neighborhoods with mature trees and open attic vents see critters nesting in trunk lines. Cleaning removes the material, but we also flag access points so you can seal them before it happens again.
- Per-vent pricing games. Some Covina homeowners get quoted $39 for “up to 10 vents,” then discover the actual cost once the tech counts registers and adds on “air handler cleaning” and “coil access.” We price the whole system flat, in writing, before work begins.
Pricing for HVAC Cleaning in Covina, CA
A full HVAC cleaning in Covina runs $425 – $685 for a typical three-bedroom ranch: supply and return duct cleaning, evaporator coil cleaning, blower motor cleaning, and air handler cleaning as one bundled system. Evaporator coil cleaning alone is $180 – $320. AC duct cleaning as a standalone runs $285 – $425. These are flat prices per system, not per vent. You agree to a written price before work starts, and it does not change at the door. Square footage, accessibility in tight attic spaces, and the condition of the existing ductwork all factor into where a home lands in that range. Call (737) 727-2314 for an exact quote. Estimates are free, and the number covers the whole system, not a teaser rate.
We Also Serve Cities Near Covina
Our crews regularly cover Azusa, West Covina, Baldwin Park, and Glendora alongside Covina. The drive from those neighborhoods takes us through the same San Gabriel Valley corridors we know well. If you’re in one of those cities, you’re still getting the same HVAC Cleaning team, the same flat pricing, and the same 365-Day Done Right Promise. And if you’re in Covina proper, you’ll find us working the streets we know best, from Covina‘s ranch-home belt to the newer builds further east.
Serving Covina, CA - Our Local Coverage Area
We’re based in the Covina 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 Covina
Every four to six years for most Covina homes, with the honest caveat that original galvanized ductwork in a 1960s ranch with pets or a smoker might need attention sooner. If no one in the home has allergies, no recent renovation just finished, and the registers look clean, you may not need it yet. A camera inspection gives you a real answer instead of a marketing schedule. Call (737) 727-2314 and we’ll take a look before we ever quote you.
Flat price per system, always. We do not price per vent or per register, because that rewards counting vents rather than actually cleaning the supply and return ducts and the air handler where the contamination lives. The written quote you approve is the invoice you pay.
It starts with a camera inspection of the original galvanized trunk lines and branch runs in your attic. Then we clean the supply and return ducts under negative pressure, remove and clean the blower motor, open the air handler to clean the evaporator coil, and apply a coil treatment. We finish with a properly sized filter and before-and-after photos of your ducts. On a job near Cypress Street, our tech set up a Rotobrush and Nikro rig with negative pressure at the air handler and ran agitation tools through the original galvanized trunk lines; the camera inspection showed a heavy lint pathway and debris buildup at the first branch takeoff. We cleaned the evaporator coil and blower motor, replaced the Honeywell filter with a properly sized MERV rating for the system, and photographed the before-and-after inside the ducts so the homeowner could see exactly what came out.
Yes, and it’s the better value. A full system clean in one visit means one trip charge, one setup, and one written price. Bundling coil and duct cleaning together in Covina typically runs $425 – $685 for a standard ranch, which is less than scheduling them separately.
You get before-and-after photographs taken inside the ducts themselves, not just at the vent openings. The camera goes into the trunk line at the air handler and at key branch takeoffs. If the photos don’t show a visible difference, we didn’t do our job, and the 365-Day Done Right Promise means we come back and fix it at no charge. That’s the whole point of the Relay Standard.
Written by Omar Haddad, Owner at Cardinal Air Duct Cleaning, serving Covina with flat-price HVAC cleaning backed by the 365-Day Done Right Promise.