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.
Lennox Air Duct Cleaning in Citrus, CA | Cardinal Air Duct West Covina
We provide independent Lennox Air Duct Cleaning - Citrus, and the one thing that makes our work here different is simple: we know these homes. Most Citrus houses from the 1950s through 1970s hide abandoned gravity furnace duct branches behind walls, and those dead-end runs quietly feed dust back into your Lennox system every time the blower kicks on. We video-inspect, seal, and clean what other companies never look for. Call (424) 688-1845 for a written price before any work starts.
We’re Cardinal Air Duct West Covina, part of the Relay Home Co. family founded in 2005. We’re an Lennox sales & service specialist by experience, not by manufacturer authorization. Nobody at Lennox signs our checks. We just happen to know their duct and coil designs better than most because we see them in Citrus attics every week.
Why Citrus Residents Choose Us for Lennox Service
Omar Haddad, our owner, grew up in Los Angeles and spent nearly two decades crawling through San Gabriel Valley attics before running Cardinal Air Duct West Covina. He trained on HVAC fundamentals at Citrus College in Glendora, then spent years on real job sites learning exactly how Lennox equipment behaves when it’s been running in dusty, citrus-pollen-heavy air for decades. That’s the difference. A tech who learned on a textbook can clean ducts. A tech who’s seen a hundred Lennox slab coils packed with Santa Ana grit in Citrus knows what to look for before the cleaning even starts.
We run professional-grade equipment: Rotobrush rotary brush systems, Nikro HEPA vacuums, and Abatement Technologies containment units. Not a truck-mounted shop vac. Every tech is background-checked and shows up in uniform, and you get a live trackable arrival time through The Relay Standard. If the work isn’t right within 365 days, we come back and correct it at no charge. That’s the 365-Day Done Right Promise, and it applies to every job, no exceptions.
Styles & brands we work with
Common Lennox Air Duct Cleaning Problems We Solve in Citrus
- Abandoned gravity furnace branches. Citrus has more of these than almost any city in the eastern San Gabriel Valley. When central systems were retrofitted in the 1960s, the old gravity ducts often got disconnected but never removed. They sit behind walls collecting decades of dust, citrus blossom debris, and rodent nests, then recirculate it into your Lennox system. We video-inspect and seal them off.
- Dust-clogged variable-speed blower motors. Pre-2012 Lennox G61 and G71 furnaces are prone to control board failures when dust clogs the cooling fins. Santa Ana winds push fine grit through Citrus, and long cooling seasons mean the blower runs constantly. Clean ducts reduce the dust load on those sensitive electronics.
- Heat exchanger stress cracks on older G20 and G23 series furnaces. Citrus summers push AC systems hard, which cycles blowers more frequently than Lennox ever designed for in colder climates. More cycles means more thermal stress on aging heat exchangers. We inspect and flag concerns before they become carbon monoxide risks.
- Slab coil pan corrosion and drain line blockages. Lennox Signature Series AC units in Citrus deal with an unusual mix of fine dust and organic debris from citrus trees. That grit accelerates pan corrosion and clogs drain lines faster than in coastal cities. Coil cleaning is part of what we do, and it’s not optional here.
- R4 and R6 flex duct delamination. Original 1970s ranch homes in Citrus often have Lennox-supplied insulated flex ducts that are now decades old. Attic heat breaks down the inner liner, sending fibers into the airstream. We replace crumbling flex before it contaminates the rest of the system.
Lennox Service in Citrus: What Local Conditions Mean for Your Equipment
Here’s a checkable fact about Citrus you won’t find on a generic duct cleaning site: the housing stock here was mostly built between 1940 and 1980, and a huge share of it started with gravity furnaces. When central air got retrofitted into those homes in the 1960s, contractors often left the old gravity duct branches in place, disconnected and abandoned behind walls. Glendora, by comparison, has far more homes built later with dedicated return trunks, so this problem is nowhere near as common there. If you own a Lennox system in an older Citrus home on streets like Citrus Avenue or Barranca Street, there’s a real chance you have dead-end duct runs acting as permanent dust reservoirs. They don’t show up on a basic cleaning. They need a video inspection, and if found, they need to be sealed with mastic before cleaning even makes sense. Otherwise you’re paying to clean ducts that will just refill from the abandoned branches.
Lennox Models & Products We Service in Citrus
We clean and service ductwork connected to every major Lennox line: Signature Series (SLP98V, XC25), Elite Series (EL296V, XC16), Merit Series (ML195, 13ACX), and the Dave Lennox Signature Collection matched with S30 thermostats. For critical components like variable-speed motors and control boards, we spec authentic OEM Lennox parts to preserve warranty coverage and communication protocols. For basic duct fittings and grilles, we offer quality aftermarket options when budgets are tighter. And we’re honest about the big picture: if your Lennox heat exchanger or compressor is past its service life, we’ll tell you to replace it rather than take your money for a cleaning that won’t solve the real problem.
See the difference
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Before
AfterLennox Service Pricing in Citrus
Most standard Lennox air duct cleanings in Citrus run $450 to $900 for a typical single-family home, depending on system size, number of returns, and whether we’re also scheduling Citrus Dryer Vent Cleaning or the evaporator coil. Supply duct cleaning, return duct cleaning, and evaporator coil cleaning are all included in a standard job. Homes with multiple systems or severe contamination from abandoned duct branches run higher. What drives cost here specifically? Attic access difficulty in older ranch homes, the need to video-inspect for dead-end runs, and whether flex duct replacement is required. Every estimate includes a written price before work begins, and that price does not change at the door. Call (424) 688-1845 for an exact quote. Estimates are free, and a live person answers 24/7.
Serving Citrus, CA - Our Local Coverage Area
We’re based in the Citrus 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 – Lennox Air Duct Cleaning in Citrus
Your filter only catches what passes through it before the blower, but Citrus homes with decades-old ductwork have dust accumulating inside the ducts themselves. Abandoned gravity branches, pinhole leaks in aging galvanized steel, and delaminating flex liner all feed dust into the airstream after the filter. Monthly filter changes help, but they can’t remove what’s already packed inside the duct walls.
Yes, and this is exactly why we video-inspect before we clean. We map where the abandoned branches are, seal the accessible ones off with mastic before running the Rotobrush and Nikro HEPA extraction, and leave everything else untouched. Disturbing a dead-end run without sealing it just kicks decades of dust back into circulation. If your furnace is connected to abandoned branches, we may recommend sealing them during the same visit. Call (424) 688-1845 and we’ll walk you through what your system likely has based on your home’s age.
It can. The XC25 is a high-efficiency variable-speed unit, and its performance depends on unrestricted airflow. When the evaporator coil is coated with dust and the return ducts are packed with citrus pollen and Santa Ana grit, the system works harder to move the same volume of air. That means longer runtimes and higher bills during Citrus heat waves. Clean ducts and a clean coil remove that restriction. We include evaporator coil cleaning as part of the service.
Rodent nests in ducts are a known issue in older Citrus homes, especially where abandoned gravity branches create quiet, undisturbed spaces. Cleaning removes the nest and the contamination, but recurrence usually means there’s an entry point somewhere: a disconnected flex run, a missing grille, a gap where duct meets the wall. We seal those openings as part of our work, and if the problem persists, it’s a structural repair issue, not just a cleaning issue. We’ll tell you straight what’s needed.
Homes within a few hundred feet of active citrus groves should have their ducts and heat exchanger inspected every two to three years. The fine particulate from citrus blossoms and fruit dust is finer than typical household dust, and it coats heat exchanger surfaces faster. If you’re noticing more dust on furniture despite a clean filter, or if allergies spike each spring, the interval should be shorter. Call (424) 688-1845 for a free estimate and we’ll give you a straight answer on timing for your specific home.
Service Areas Near Citrus
We serve Citrus and the surrounding San Gabriel Valley communities. If you’re in West Covina, check our Citrus service area page for coverage details, or see Lennox service in West Covina if you’re closer to that side. For homes further east, Lennox service in Pomona covers the neighboring area. We also work in La Puente and Diamond Bar regularly.
Book Your Lennox Service in Citrus Today
Call (424) 688-1845 and you’ll reach a live person who can schedule your free estimate and answer questions about your Lennox system. 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 when the job’s done. Clean ducts, straight answers, no surprises on the invoice.
Written by Omar Haddad, Owner at Cardinal Air Duct West Covina, serving Citrus and the San Gabriel Valley.