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 Sherman Oaks, CA | Cardinal Air Duct Woodland Hills
If you own a Lennox system in Sherman Oaks and you’re seeing gray film on your registers after a Santa Ana, that’s ash, not ordinary dust. We’re an independent Lennox service provider covering every Sherman Oaks neighborhood, and what sets our work apart here is simple: we know how Lennox equipment specifically reacts to what blows through this part of the Valley. Most standard duct cleanings in Sherman Oaks run $450 – $850 for a typical ranch home, and we hand you a written price before any work starts. Call (559) 295-5878 for a free estimate.
Why Sherman Oaks Residents Choose Us for Lennox Service
Our techs have opened thousands of Lennox duct systems across the San Fernando Valley, and we know how Lennox’s famously tight-sealed return plenums and variable-speed air handlers behave when Sherman Oaks throws ash, heat, and aging flex duct at them. Omar Haddad, our owner, grew up in Los Angeles and trained at LA Trade-Technical College before spending nearly two decades in attic spaces and trunk lines across the Valley, so he’s seen firsthand what Santa Ana ash does to a Lennox blower wheel south of Ventura Boulevard.
We carry OEM Lennox filters, gaskets, and access panels when fit and static pressure matter, and we stock quality aftermarket flex duct, mastic, and motors that meet or exceed Lennox specs where they don’t. That means faster turnaround for Sherman Oaks homeowners and a price that reflects what your system actually needs. We’re not manufacturer-affiliated, and we don’t pretend to be. We fix the whole duct system, not just the parts Lennox dictates, and we stand behind the work with our own 365-Day Done Right Promise. For broader Lennox expertise across the Valley, see our Lennox sales & service page.
Styles & brands we work with
Common Lennox Air Duct Cleaning Problems We Solve in Sherman Oaks
- Ash-coated variable-speed blower wheels. Lennox XC21 and EL296V systems move air constantly, and after a Santa Ana event, fine ash from the Santa Monica Mountains settles on the blower wheel. That throws the wheel out of balance and puts premature wear on motor bearings. We pull the blower, clean it properly, and check static pressure when we’re done.
- Collapsed flex returns in 1950s ranch homes. Many Sherman Oaks ranch houses still run original or outdated flex duct, and the return drop on Lennox XC and EL systems is often undersized for the air handler. High negative pressure plus aged inner liner equals collapse at the plenum, which shows up as whistling and dust on furniture. We replace collapsed runs with R-8 insulated flex and seal everything with mastic.
- Wildfire smoke residue on evaporator coils. Lennox coil cabinets seal tight, and that’s normally a good thing, but after fire season, smoke residue traps on the evaporator fins even when your filter looks clean. That residue kills efficiency and can smell musty in summer. We clean coils as part of our full Lennox duct service.
- Separated flex connectors on pre-2000 Lennox systems. Older Lennox flex connectors dry out in hot Sherman Oaks attics and separate at the take-off collars, letting attic air leak into supply runs. That means dust, fiberglass, and whatever else is up there ends up blowing through your registers. We inspect every connection during a cleaning and reseal or replace as needed.
- High static pressure after windstorms. When Santa Ana winds push ash through a system, clogged filters and restricted returns drive static pressure up on Lennox variable-speed air handlers. These systems respond to pressure changes, and the result is noise, reduced airflow, and more strain on the blower. We measure and correct it.
Lennox Service in Sherman Oaks: What Local Conditions Mean for Your Equipment
In Sherman Oaks, and especially in the ranch-home blocks south of Ventura Boulevard, Santa Ana winds carry ash from the Santa Monica Mountains into supply registers even when windows are closed. You won’t find this in Encino or Studio City just a mile north. It leaves a telltale gray film on Lennox registers that looks like dust but behaves differently: it’s finer, it clings to blower wheels and coil fins, and it gets past standard 1-inch filters with ease. If you own a Lennox variable-speed system in this part of Sherman Oaks, you should check your registers after every significant wind event. Gray film is the warning sign. It means ash has already entered the return side, and your blower wheel is likely coated, even if the filter looked fine when you changed it last month. For homes further west along the 101 corridor, we also provide Lennox service in Tarzana and Lennox service in Woodland Hills.
Lennox Models & Products We Service in Sherman Oaks
We work on the full Lennox range found in Sherman Oaks homes. The Signature Collection, including XC21 and SLP98V systems, shows up in higher-end ranch remodels and newer construction south of the Boulevard. The Elite Series, like the EL296V and XC16, pairs with older duct runs in homes built through the 1960s. The Merit Series, including ML180 and ML196, is common in original-condition Sherman Oaks houses where a furnace swap happened but ducts never did. We also service Lennox Healthy Climate media cabinets and filtration systems, which many homeowners install after wildfire seasons. Our parts approach is straightforward: we use OEM Lennox components when fit or static pressure depend on it, and quality aftermarket parts when they meet or beat the spec at a better price. We won’t sell you OEM just because it says Lennox on the box.
See the difference
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Before
AfterLennox Service Pricing in Sherman Oaks
Most standard Lennox air duct cleanings in Sherman Oaks run $450 – $850 for a typical ranch home, depending on system size, number of returns, and how much ash has accumulated. A full cleaning with evaporator coil work, blower cleaning, and duct sealing on a larger home can push into the $1,200 – $1,800 range. What drives cost here more than anything is ash. Homes south of Ventura Boulevard often need more time than the same floor plan would north of the Boulevard, because fine ash packs into blower housings and coil fins. Every estimate includes a written price before any work begins, and that number does not change at the door. We also include video inspection so you see what’s inside your ducts before we clean them, and before-and-after photos so you see what changed. Call (559) 295-5878 for a free estimate on your Lennox system in Sherman Oaks.
Serving Sherman Oaks, CA - Our Local Coverage Area
We’re based in the Sherman Oaks 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 Sherman Oaks
Santa Ana winds push fine ash from the Santa Monica Mountains through the building envelope and into your return air, where your Lennox system pulls it in and distributes it through supply registers. South of Ventura Boulevard, this happens even with windows and doors closed. The ash is fine enough to pass through standard filters. If you see gray film, it’s time for an inspection and cleaning. Call (559) 295-5878 and we’ll take a look. Estimates are free.
Yes. Smoke residue and fine ash coat the blower wheel, and on variable-speed Lennox systems that run constantly, even minor buildup throws the wheel out of balance and accelerates motor bearing wear. The damage is gradual, which is why it often goes unnoticed until you hear a hum or notice reduced airflow. Cleaning the blower and correcting airflow is cheaper than replacing the motor. Call (559) 295-5878 to schedule an inspection.
If a Lennox duct run is more than 40% compromised by ash, leakage, or inner liner breakdown, we recommend replacement over patching, especially on systems older than 15 years. In original Sherman Oaks ranch homes, much of the flex duct has been in hot attics for five decades or more. Replacing collapsed or degraded runs with R-8 insulated flex and sealing take-off collars with mastic often fixes airflow problems that our Dryer Vent Cleaning in Sherman Oaks and duct cleaning alone cannot. We’ll show you the video before we quote the work.
Usually, yes. Sherman Oaks summers are dry, but condensation on the evaporator coil combines with dust and ash residue that built up during fire season, and the result is a musty smell that returns every cooling season. The coil needs cleaning and the duct system needs assessment for moisture and debris. It’s a common Lennox issue here because these systems run more airflow through tight coils, and whatever is in the ducts ends up on the fins. Call (559) 295-5878 for a free estimate.
Windstorms load your filters with ash and fine particulate, and if the return side was already restricted by undersized flex or collapsed liner, static pressure climbs quickly on a Lennox variable-speed blower. High static pressure means noise, poor airflow, and extra strain on the motor. We measure static pressure as part of our diagnostic work and correct the restriction, whether that’s cleaning, coil work, or replacing a collapsed return. Call (559) 295-5878 for an exact quote. Estimates are free.
Service Areas Near Sherman Oaks
We serve Sherman Oaks and the surrounding San Fernando Valley communities, including Woodland Hills, Tarzana, Encino, and Brentwood. For homeowners just west of the 405, our Sherman Oaks service area page covers full details of the neighborhoods we work in. If you’re in the hills or along the Boulevard, we’re close by.
Book Your Lennox Service in Sherman Oaks Today
We recently cleaned a 1962 ranch on Cedros Avenue near Addison Street. The homeowner had a Lennox XC21 with an SLP98V furnace and complained of intermittent whistling and dust on furniture after the first Santa Ana of fall. Our video inspection showed the 14-inch flex return had collapsed at the plenum due to ash-clogged filter media and hardened inner liner, and the blower wheel was coated with fine gray ash. We replaced the collapsed flex run with R-8 insulated flex, cleaned the blower and evaporator coil, and sealed all take-off collars with mastic. No more whistle, and static pressure dropped back to Lennox spec. Clean ducts, straight answers – that’s the whole job. Call (559) 295-5878 for your free estimate in Sherman Oaks.
Written by Omar Haddad, Owner at Cardinal Air Duct Woodland Hills, serving Sherman Oaks and the San Fernando Valley since 2005.