Sweep & inspection
Caps & crowns
Flue relining
Masonry repair
Gas fireplace serviceLevel 1 sweep and inspection to the NFPA 211 annual standard - flue, crown, cap, and flashing checked and photographed
Chimney sweep logs do not sweep chimneys. They loosen some creosote - which then falls where a brush and vacuum still have to collect it.
Gelco Chimney Cleaning in Lennox, CA | Ashwood Chimney Sweep
We provide independent Chimney Sweep in Lennox for Gelco units across the area, from the compact stucco bungalows off Hawthorne Boulevard to every narrow lot in the 90304 ZIP. The single thing that makes our Gelco work different here is that we spend most of our time on fireplaces that sit unused for years under the LAX approach, not on heavily-burned wood stoves. That changes which problems actually show up and how we approach the first relight. Call (833) 805-3229 for a free estimate, and we’ll tell you exactly what’s going on inside your flue before any work is booked.
Why Lennox Residents Choose Us for Gelco Service
Gelco fireplaces and inserts are most of what we see behind the hearths in these 1940s and 1950s stucco bungalows. Norm Castillo, our owner, grew up off Sierra Avenue in Fontana and went through the HVAC and building systems program at Chaffey College before narrowing his focus to chimneys, flues, and venting. He’s been working these South Bay neighborhoods for close to two decades, and the thing about Lennox is that the fireplaces here rarely see heavy use. That means the problems are different from what a mountain-town sweep deals with: bird nests where you’d expect creosote, cracked mortar where you’d expect warped dampers, and a downdraft issue that half the South Bay never has to think about. We know Gelco systems because that’s what’s behind so many of these original masonry fireplaces, and we stock the caps, dampers, and glass-door hardware that match their dimensions. For broader Gelco sales & service, we handle chimney sweeping, repair, and dryer vent cleaning in one call.
Styles & brands we work with





Common Gelco Chimney Cleaning Problems We Solve in Lennox
Here’s what we actually find when we open a Gelco fireplace in Lennox that hasn’t been cleaned in a while. Each one ties back to the way these homes and this climate behave.
- Bird and rodent nesting packed against the Gelco baffle or smoke shelf. A fireplace that sits unlit for nine months of the year is an open invitation. We regularly pull starling and sparrow nests off Gelco baffles in Lennox, along with the fine debris that settles into the smoke shelf. It’s the single most common finding here, and it’s why we recommend capping any flue that’s not burned at least a few times each winter.
- Cracked mortar and deteriorated flue joints on unlined masonry behind Gelco inserts. Many Lennox homes had a Gelco insert dropped into an original unlined fireplace decades ago, and the brief rainy season sends moisture down through the old mortar joints. You won’t always see it from the living room, but a Level 2 camera inspection will catch it before the firebox floor starts spalling.
- Downdraft and smoke spillage on first relight. This one is specific to living under the LAX approach. Pressure swings from low-flying aircraft push air back down a cold flue, and a worn Gelco damper or a loose glass door will let that smoke into the room. We test for it on every Lennox service call because it’s the kind of thing a general sweep in a quiet town never checks for.
- Corroded or cocked Gelco caps and spark arrestor mesh. When a flue goes years between fires, the cap becomes a perch more than a protector. We find rusted mesh, tilted caps, and in a few cases caps that have shifted enough to let rainwater run straight down the stack. Soot fallout staining the firebox floor is usually the tell.
- Soot fallout and debris accumulation from disuse, not heavy creosote. Most Lennox Gelco fireplaces never build the thick, glazed creosote you’d see in a mountain cabin that burns daily from October to April. What they build is dust, soot, and whatever the birds and offshore breezes push in. A cleaning here is more about clearing that out and checking the flue structure than scraping creosote.
Gelco Service in Lennox: What Local Conditions Mean for Your Equipment
Lennox is an unincorporated LA County pocket hard under the LAX approach, and that steady low aircraft noise and pressure churn is why we routinely test Gelco fireplaces here for downdraft and smoke spillage on first relight. A check that rarely comes up in quiet neighboring South Bay towns. When a jet passes low, it creates a pressure wave that can overcome a cold flue’s natural draft, and if your Gelco damper is worn at the edges or your glass door isn’t seating flush, that pressure pushes smoke back into the living room instead of up and out. It’s not a sign your fireplace is broken, necessarily. It’s a sign your flue and damper need to be in better shape in Lennox than they would in, say, Torrance or Redondo Beach, because the conditions here are working against you every time a plane comes in. We check damper fit, glass-door gaskets, and flue draft as part of every Gelco service in El Segundo and Lennox cleaning the 90304 ZIP, and we’ll tell you plainly if the fix is a new damper, a cap adjustment, or something more involved.
Gelco Models & Products We Service in Lennox
We work on Gelco wood-burning fireplace inserts, factory-built prefabricated fireboxes, multi-flue chimney caps and spark arrestors, and fireplace glass door and screen assemblies. When OEM parts are still available for the age and model of your unit, we use them. When they’re discontinued or slow to source, we fit quality aftermarket dampers, caps, and glass-door hardware that match Gelco dimensions, not close-enough substitutes. We keep common replacement caps, damper kits, and gasket materials stocked for fast Lennox turnaround, so the typical repair doesn’t wait on a shipment from the Midwest. If a Gelco firebox is cracked beyond safe repair, we’ll tell you that replacement or conversion beats chasing parts on a box that’s done. And we’ll show you the camera footage that proves it.
See the difference
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AfterGelco Service Pricing in Lennox
Chimney cleaning in Lennox for a standard Gelco insert or prefab firebox runs $189 to $239. A Level 2 camera inspection, which we recommend any time a fireplace has sat unused for more than two seasons or when there’s evidence of moisture inside the flue, runs $289 to $379. Cap installation typically runs $160 to $220 including the cap and labor, and damper replacement with a quality aftermarket unit runs $220 to $330 depending on firebox size and access. What actually drives the cost is the condition of the flue behind the Gelco unit: an unlined masonry chimney that’s been taking moisture for years costs more to bring back than a clean factory-built flue that just needs a sweep and a new cap. Every free estimate includes a visual inspection and our written recommendation with no obligation to book. Call (833) 805-3229 and we’ll give you an exact quote before any work starts.
Serving Lennox, CA — Our Local Coverage Area
We’re based in the Lennox area and know this community well, and we also provide Inglewood Gelco service. Use the map below to see our full coverage — if you’re nearby, we can almost certainly help.
FAQs – Gelco Chimney Cleaning in Lennox
The most common cause in Lennox is downdraft from cold-flue start-up, and it’s aggravated by the pressure churn from aircraft on the LAX approach. A cold flue has weak draft, and a worn Gelco damper or loose glass-door gasket lets smoke spill into the room before the flue warms enough to draw upward. The fix is usually a damper adjustment or replacement, and we check that fit on every cleaning call. Call (833) 805-3229 and we’ll diagnose it.
Not necessarily, and this is the most serious finding we make in Lennox’s mid-century stucco bungalows. If the original masonry behind the Gelco insert was never lined, or if the original clay liner has cracked and deteriorated, heat and moisture can reach combustible framing over time. We’ll scope it with a camera and show you what’s actually back there. If the liner is failing, we can repair it with HeatShield restoration or reline with DuraFlex, and we’ll walk you through both options before any work is booked.
Rarely. Lennox’s mild, dry climate and light seasonal burning mean most Gelco fireplaces here accumulate dust, soot, bird debris, and the occasional spiderweb colony instead of thick glazed creosote. That’s part of why we emphasize inspection and clearance work over aggressive creosote removal on most Lennox calls. A clean flue isn’t a luxury – it’s just the job done right.
Yes, and a cap is one of the best defenses for a lightly-used Lennox fireplace. An uncapped flue is an open pipe for birds, rodents, rain, and the fine particulate that drifts through the South Bay air. We regularly pull nests off Gelco baffles in Lennox that a properly fitted cap would have prevented. Cap installation runs $160 to $220 including the cap and labor, and we’ll size it to your Gelco unit’s flue dimensions. Call (833) 805-3229 for a quote.
Yes, and it’s not the noise itself but the pressure waves from low-flying aircraft that matter. Those pressure swings can push air back down a cold or weak-drafting flue, which is why we test Gelco fireplaces in Lennox for smoke spillage on first relight as a standard part of our process. It’s a check that rarely comes up in quieter South Bay towns, and it’s one of the reasons Lennox-specific experience matters for this work.
Service Areas Near Lennox
We serve Lennox and the surrounding South Bay and Inland Empire communities, including Hawthorne, Inglewood, Gardena, El Segundo, and Torrance. For Lennox service area details or to schedule a visit, call (833) 805-3229. We also cover nearby areas like Gelco service in Shadow Hills and Gelco service in Hawthorne for customers just outside our core route.
Book Your Gelco Service in Lennox Today
If your Gelco fireplace hasn’t been cleaned or inspected in the last year, or if you’ve got a first relight coming up before an insurance review or sale, call (833) 805-3229. Estimates are free, and our Tech will give you a straight answer about what’s safe and what can wait. Serving Lennox and the 90304 ZIP with Gelco-specific chimney cleaning, inspection, and repair, plus Gelco service in Del Aire.
Written by Norm Castillo, Owner at Ashwood Chimney Sweep, serving Lennox and the surrounding South Bay for close to two decades.