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.
Before
After
Before
After
Before
AfterLennox Air Duct Cleaning in Los Angeles, CA | Cardinal Air Duct Cleaning
We’re Cardinal Air Duct Cleaning, and we handle Lennox Air Duct Cleaning - Los Angeles for systems across the city. The short answer: yes, we clean and repair the ductwork connected to Lennox systems throughout LA County, from Woodland Hills to Long Beach, and we know exactly how this city’s heat and older housing stock stress those systems. What sets our Lennox work apart is that we treat the ducts and the air handler as one system, not two separate jobs. Call (737) 727-2314 for a written estimate before any work starts.
Omar Haddad, our owner and lead technician, has been cleaning residential and commercial duct systems across Los Angeles County for well over a decade. He’s the guy who will explain why your flex duct collapsed in August and what that did to your variable-speed blower. We’re an independent Lennox service provider, part of the Relay Home Co. family founded in 2005. For broader context on our Lennox work, see our Lennox sales & service page, and for coverage details, our Los Angeles service area page.
Why Los Angeles Residents Choose Us for Lennox Service
Most duct companies will clean any duct. Few understand what Lennox equipment specifically demands from the ductwork attached to it. We do, because we service these systems daily in Los Angeles homes. Omar picked up his HVAC fundamentals at Los Angeles Trade-Technical College, where the hands-on lab work convinced him indoor air quality was the part of the industry homeowners ignored until something failed. That perspective shapes every job we take.
We run Rotobrush rotary brush systems and Nikro HEPA vacuums, not truck-mounted shop-vac shortcuts. We use negative-pressure extraction, meaning loosened debris goes straight into the vacuum, not back into your living room. We also carry Honeywell, Aprilaire, and Guardsman filtration products for Lennox Healthy Climate setups. Every technician is background-checked and uniformed. You’ll know the tech’s name before they open the door.
Beyond equipment, the difference is the guarantee. The 365-Day Done Right Promise covers every job. If the work isn’t right within 365 days, we return and correct it at no charge. No fine print, no exclusions. That’s the rule, not the exception.
Common Lennox Air Duct Cleaning Problems We Solve in Los Angeles
- Flex duct collapse in hot attics. Los Angeles attics routinely exceed 150°F in summer, and that heat degrades the plastic outer jacket on flex duct. We find collapsed or kinked runs starving Lennox variable-speed blowers of airflow, which trips high-limit switches and shortens motor life. We replace the crushed sections and seal the connections properly.
- Coil corrosion near the coast. In coastal Los Angeles neighborhoods like Santa Monica and Long Beach, salt air accelerates evaporator coil corrosion on Lennox systems. Corrosion leads to refrigerant leaks and frozen coils, which then stress the compressor. Cleaning the coil and ducts together is the only way to stop the cycle. We offer evaporator coil cleaning as a standard service.
- Return duct leaks pulling attic dust. Older Los Angeles homes have return ducts running through unconditioned attics. Leaks at the seams pull in dust, insulation fibers, and sometimes pest debris, clogging Lennox Healthy Climate filters and MERV-rated media cabinets faster than they should. We seal return ducts with mastic, not tape.
- Blower wheel buildup on long duct runs. Lennox air handlers with constant-torque or variable-speed motors collect lint and debris on the blower wheel over time. In Los Angeles homes with long duct runs and undersized returns, the buildup causes vibration, higher amp draw, and premature motor failure. Cleaning the wheel is part of our duct service, not an add-on.
- Disconnected plenum takeoffs. The mastic seals and plastic connectors at plenum takeoffs break down faster in Los Angeles heat. When a run disconnects entirely, that room loses airflow while the rest of the house over-pressurizes. We routinely find two or three disconnected runs in homes that have never had duct inspection.
Lennox Service in Los Angeles: What Local Conditions Mean for Your Equipment
We work in a lot of Los Angeles homes built before 1980. Those houses typically have original ductwork routed through unconditioned attics and crawlspaces that hit 160°F in summer, and that extreme heat degrades flex duct and mastic seals on Lennox systems faster than anything you’d see in milder climates. We find disconnected runs and torn vapor barriers that silently rob cooling capacity, because the homeowner feels the system running but doesn’t realize half the air is going into the attic. In Woodland Hills and the Valley specifically, that pre-1980 housing stock is dense, and the summer attic heat is relentless. In a 1962 ranch house in Woodland Hills, our crew inspected a Lennox EL296V furnace and found the flex duct in the attic had collapsed at a sharp bend, causing the variable-speed blower to run at high static pressure and trip the high-limit switch. We replaced the crushed section, sealed the plenum connections with mastic, and cleaned the evaporator coil that had accumulated dust from a leaking return duct. The homeowner reported immediate improvement in airflow and a quieter system within a day. That’s the kind of failure you can’t diagnose from a living room. You have to get into the attic and look.
Lennox Models & Products We Service in Los Angeles
We clean and repair ductwork attached to the full Lennox lineup across Los Angeles. That includes the Dave Lennox Signature Collection furnaces like the SL280V, EL296V, and SLP98V, the Merit Series such as the ML180, ML193, and ML14XC1 air conditioners, and the Elite Series including the EL18XCV and EL16XC1. We also handle Lennox Healthy Climate indoor air quality accessories and the ducted portions of Lennox ductless mini-split systems. Our approach is straightforward: we use OEM or equivalent high-quality aftermarket parts for Lennox repairs, including blower motors, control boards, and flex duct components. We stock common aftermarket parts locally for fast Los Angeles turnaround. When a Lennox system is over 15 years old and needs major duct repairs plus coil replacement, we give you an honest repair-versus-replace comparison rather than pushing a new unit.
Lennox Service Pricing in Los Angeles
Most standard air duct cleanings in Los Angeles run $350 to $650 for a typical home, depending on the number of returns, the condition of the ductwork, and whether you have a Lennox Healthy Climate filter cabinet that needs attention. If flex duct sections need replacing, that’s quoted separately after we inspect the attic. The variables that drive cost here are attic access difficulty, duct length, and how long it’s been since the last cleaning. On newish ducts, it moves fast. On decades-old ductwork with tears and disconnects, it takes longer and the price reflects that. Every job includes a written price before work begins, and that price does not change at the door. Call (737) 727-2314 for an exact quote. Estimates are free, and a live person answers around the clock.
Serving Los Angeles, CA - Our Local Coverage Area
We’re based in the Los Angeles 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 Los Angeles
The high-limit switch trips when the heat exchanger gets too hot, and in Los Angeles summer, the usual cause is restricted airflow on a hot attic day. Collapsed flex duct, a clogged blower wheel, or a dirty evaporator coil all choke airflow and force the switch open. We start by mapping airflow through the entire duct system, because the switch is rarely the actual problem. Call (737) 727-2314 if it keeps tripping, and we’ll schedule an inspection.
Often yes. If the coil is accessible through a service panel, we clean it in place using coil cleaner and a low-pressure rinse. If it’s buried or heavily corroded, we may need to pull it. Coastal Los Angeles homes with salt air corrosion sometimes need replacement rather than cleaning, and we’ll show you what we found before quoting that work.
Slightly. Lennox Healthy Climate media cabinets with MERV 11 or higher filters catch more fine dust, which means the filter loads faster when your ducts are dirty. We inspect the filter condition before and after cleaning, and we’ll tell you if the filter is doing its job or if the ducts are bypassing it entirely. We stock Guardsman and Aprilaire replacements for those cabinets.
Salt air accelerates corrosion on aluminum and copper coil fins, especially within a few miles of the coast. In places like Santa Monica, Playa del Rey, and Long Beach, we see pitting and fin deterioration on Lennox coils years earlier than inland. Once the coil leaks, the system shorts refrigerant and eventually freezes. Cleaning the coil and ducts together slows that process, but if corrosion has already opened a leak, the coil needs replacing. Call (737) 727-2314 for an inspection near the coast.
We do, and that includes our Dryer Vent Cleaning in Los Angeles as well. Lennox ductless mini-split heads and line sets need regular cleaning too, especially where cooling runs most of the year. We clean the blower wheel, coil, and drain pan on mini-split heads, and we check the line set insulation for UV damage. The ducted portions of multi-zone systems are cleaned with the same negative-pressure equipment we use on central ductwork.
Service Areas Near Los Angeles
We cover all of Los Angeles County, from Woodland Hills and Sherman Oaks to Long Beach and the South Bay. Omar’s crew works throughout the San Fernando Valley, the Westside, and the coastal corridor. We also support our sister markets on request, including Lennox service in Brooklyn and Lennox service in Houston, through the Relay Home Co. network.
Book Your Lennox Service in Los Angeles Today
Call (737) 727-2314 for a free estimate on Lennox air duct cleaning in Los Angeles. A live person answers, every time. We’ll give you a written price before work starts, and the 365-Day Done Right Promise means we stand behind it for a full year. Clean ducts aren’t a luxury – in an L.A. summer, they’re just how your system breathes.
Written by Omar Haddad, Owner & Lead Technician at Cardinal Air Duct Cleaning, serving Los Angeles since 2005.