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 Ontario, CA | Mortons Air Duct Riverside
Air Duct Cleaning in Ontario for Lennox systems typically runs $349 – $589 for a whole-home system, and we’re usually in and out in 3 – 5 hours. We’re an independent Lennox service provider, not manufacturer-affiliated, which means we tell you the truth about your ducts even when the truth is that a seal is smarter than a replacement. Our crews work on Lennox systems across Ontario every week, and the thing that separates us here is knowing how this city’s Santa Ana dust and smudge-pot soot behave inside Lennox ductwork. Call (350) 240-5513 for a written estimate before anything gets touched.
Why Ontario Residents Choose Us for Lennox Service
Paul Adeyemi grew up in Los Angeles and picked up his trade fundamentals at Los Angeles Trade-Technical College before spending the better part of two decades with his hands inside ductwork across Southern California. Now he leads our crews into Ontario attics and crawl spaces where Lennox systems have been moving air since before most of the city’s newer subdivisions were poured. We’re the shop that tells you what we find, what it will take, and what it will cost before anything gets touched.
Our techs understand Lennox ductwork the way a mechanic understands a specific make of car. We know where Lennox Elite Series air handlers trap fine dust, how rust-thinned galvanized seams on 1960s ranch homes pull in attic air, and when a Merit Series blower is working harder than it should. You get that knowledge plus the basics we never skip: shoe covers and drop cloths on every visit, a written price before any work starts, and a photo of the clean-up before the crew leaves. For broader context on what we do across the brand, see our Lennox sales & service overview.
Styles & brands we work with
Common Lennox Air Duct Cleaning Problems We Solve in Ontario
- Rust-thinned galvanized supply ducts pulling in attic dust. Ontario’s 1950s – 70s ranch homes often still have the original galvanized runs, and after sixty years of Inland Empire heat, the seams rust thin and pull attic dust into the airstream during Santa Ana wind events. We seal these seams with mastic when the metal is still sound.
- Merit Series furnaces with undersized return ducts running hot. When Ontario summers push a Lennox Merit Series furnace hard, an undersized return makes the blower work harder and pull fine desert dust deeper into the evaporator coil and duct lining. We see this pattern in older Ontario homes where returns were sized for smaller original systems.
- Elite Series blower wheels caked in grey powder. Lennox Elite Series air handlers installed by previous owners without consistent filter maintenance accumulate a fine grey powder that compacts in the blower wheel and throws it off balance. The blower gets louder, the airflow drops, and the dust spreads. Cleaning and rebalancing brings it back.
- Flex duct pinching in hot attics. Dave Lennox Signature Collection units in south Ontario’s newer subdivisions sit under some of the hottest attic temperatures in the region. Flex duct kinks and pinches, restricting airflow and trapping dust in the collapsed sections. We inspect every run and replace kinked flex with properly supported runs.
- Smudge-pot soot bonded to duct walls near Euclid Avenue. In older Ontario neighborhoods near Euclid Avenue, our techs pull out clogs that mix fine desert dust with a sticky black soot from backyard citrus smudge pots used on cold nights. This residue bonds to Lennox duct walls and needs more aggressive agitation plus a HEPA vacuum pass than typical inland dust. This pattern is specific to Ontario and you won’t find it in Rancho Cucamonga or Fontana.
Lennox Service in Ontario: What Local Conditions Mean for Your Equipment
Here’s the thing most generic Lennox pages can’t tell you. Ontario sits in a wind corridor where Santa Ana events blow fine particulate through every gap in a home’s envelope, and when those particles hit the warm metal of a Lennox return duct, they settle and stay. Low humidity keeps that dust airborne longer, which means more of it reaches the ductwork before gravity wins. In older neighborhoods near Euclid Avenue, our crew opened a return in a 1960s tract home off Euclid Avenue near G Street and found a Lennox Elite Series air handler pulling back a mix of fine Santa Ana dust and smudge-pot soot caked inside the return duct. We ran a video inspection that showed rust-through pinholes in the original galvanized return run, then sealed the metal seams with mastic and replaced the collapsed flex branch with rigid duct. After a full HEPA negative-air cleaning, the homeowner said the burning smell on cold nights was finally gone. That kind of residue pattern shapes how we clean Lennox systems in this city, and it’s why a quote for Ontario work should come from someone who knows the difference between Fontana dust and Ontario smudge residue.
Lennox Models & Products We Service in Ontario
We clean and seal ductwork on the full Lennox residential lineup: Elite Series air handlers, Merit Series furnaces, Dave Lennox Signature Collection systems, and Healthy Climate whole-home air purification and ventilation. For parts, we use genuine Lennox filters, access panels, and ductwork fittings when exact fit matters. For common duct sealing, grilles, and flex runs, we use quality aftermarket parts that meet or exceed OEM spec. Our honest position is to clean and seal existing ductwork whenever possible. We only recommend replacement when rust-through, collapsed flex, or severe mastic failure makes repair costlier than new runs. If you’re comparing our work to neighboring service areas, see our Lennox service in Riverside page.
See the difference
Before
After
Before
After
Before
AfterLennox Service Pricing in Ontario
Whole-home Lennox duct cleaning in Ontario runs $349 – $589 depending on the number of returns, the condition of the runs, and whether we’re also doing our Dryer Vent Cleaning in Ontario. Sealing rusted galvanized seams adds $150 – $300. Video inspection is $99 and we waive it when you book a full cleaning. What drives the cost here is what’s inside the ducts: straightforward dust cleans faster than bonded smudge soot. Every estimate starts with a written price before any work begins, and that price doesn’t change on the invoice unless you approve additional work first. Call (350) 240-5513 for an exact quote on your Lennox system, and estimates are free.
Serving Ontario, CA - Our Local Coverage Area
We’re based in the Ontario 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 Ontario
Older Ontario ranch homes were built in the 1950s – 70s with galvanized ductwork that has now spent decades accumulating dust, rust, and the fine particulate that Santa Ana winds push through every gap. The metal seams loosen, the ducts pull in attic dust, and the system re-circulates it. Newer homes in south Ontario with flex duct still need cleaning, but the airtight envelope and newer filters push the interval longer. Call (350) 240-5513 if you’d like us to assess your specific system.
Santa Ana winds push fine dust through the building envelope at higher pressure than normal weather, and low humidity keeps that dust suspended longer so more reaches the return ducts. For Lennox systems specifically, the dust drawn into a blower or coil can compound airflow problems that already exist from aging metal and undersized returns. A thorough cleaning after the wind season keeps the system from re-circulating the powder. Call (350) 240-5513 to schedule a post-wind-season inspection.
Yes, in most cases. We seal rust-thinned seams with mastic and replace only the sections with rust-through or structural collapse. We recommend replacement only when the repair would cost more than new rigid runs. That call is always made after a video inspection shows us the actual condition, never from a guess. To get our eyes on your ductwork, call (350) 240-5513.
They need the same core cleaning but with extra attention to the ventilation control dampers and any bypass runs. Healthy Climate systems move more air through more paths, which means more surfaces to clean and more places for dust to settle. We treat those systems with the same HEPA vacuum and agitation protocol, then verify every damper still opens and closes properly. Call (350) 240-5513 for a quote specific to your Healthy Climate setup.
Dust mixed with a sticky black soot from backyard citrus smudge pots, bonded to the duct walls. This residue takes more aggressive agitation and a longer HEPA vacuum pass than normal inland dust, which is why a quote from a crew that knows Ontario’s history will differ from one that treats every Lennox system the same. Call (350) 240-5513 and we’ll tell you what’s actually in your ducts after a video inspection.
Service Areas Near Ontario
Our crews serve Ontario and the surrounding Inland Empire cities, including Riverside, Fontana, Menifee, and Moreno Valley. If you’re near the Anaheim side of the 91, see our Lennox service in Anaheim page for that coverage area. For the full list of communities we work in, visit our Ontario service area page.
Book Your Lennox Service in Ontario Today
Call (350) 240-5513 and a real person answers, not a voicemail. We’ll schedule your Lennox duct cleaning, bring the equipment, and leave you with a written price, a photo of the clean-up, and a system that moves air the way Lennox intended.
Written by Paul Adeyemi, Owner at Mortons Air Duct Riverside, serving Ontario since 2005.