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.
DuraFlex Chimney Cleaning in Lennox, CA | Corona Chimney Sweep
DuraFlex chimney cleaning in Lennox means working with stainless liners that have spent years in coastal marine air, often inside fireplaces that were sealed off decades ago. We’re an independent DuraFlex service provider covering all of Lennox (90304), and what sets our work apart here is simple: before we clean anything, we verify the liner is actually venting. If you need DuraFlex service in Lennox, call (855) 382-6159 for a free estimate.
Why Lennox Residents Choose Us for DuraFlex Service
We work on DuraFlex SW and Pro liners every week across Lennox, and we know how these systems behave in this specific climate. Marine-layer moisture works into liner seams, winter rain finds cracked crowns, and years of light fireplace use let problems sit unnoticed until the first smoke backup. Nolan Ferris, our owner, has spent over a decade inspecting and cleaning flues across Southern California, and he built Corona Chimney Sweep around one principle: we repair what we find. That’s the difference between us and a sweep-only crew that hands you a report and a referral. When you call us for DuraFlex service in Lennox, the same team that diagnoses the problem is the team that fixes it.
We’re also independent, not manufacturer-affiliated. That matters because our recommendations are based on what your liner actually needs, not on pushing a brand. We stock OEM DuraFlex components for critical repairs and use quality aftermarket parts for non-structural items when they meet our standards. For a full picture of our DuraFlex sales & service capabilities, see that page.
Styles & brands we work with
Common DuraFlex Chimney Cleaning Problems We Solve in Lennox
- Corroded liner seams from marine-layer moisture and winter rain. Lennox sits in the LA coastal basin, and that damp air gets into masonry chimneys. DuraFlex SW liners with original seams can start corroding in as little as a decade here. We inspect every seam before cleaning, because pushing a brush through a corroded liner can turn a slow leak into a flue gas problem.
- Pinhole perforations from previous aggressive cleanings. Some liners in Lennox have been swept with steel brushes or abrasive tools that scored the stainless. Those scratches become pinhole leaks over time. We clean DuraFlex liners with methods matched to the material, and we show you what we see before, during, and after.
- Cap and flashing deterioration from UV and salt air. Lennox is close enough to the coast that the marine layer carries salt. DuraFlex caps and flashing kits take that exposure year-round. We replace rusted caps, corroded top plates, and failed flashing before they let water run down the liner and rust it from the inside.
- Liner separation at the top plate from settling or poor original installation. Lennox homes are mostly 1940s and 1950s construction. Foundation settling over 70-plus years shifts chimneys slightly, and a liner that wasn’t secured properly at the top plate can separate. We check the top connection on every visit.
- Capped or concealed flues that haven’t been vented properly. Because Lennox is heavily renter-occupied, many fireplaces were sealed off or converted. A DuraFlex liner behind drywall might be blocked, disconnected, or never properly vented. We verify venting before any cleaning happens. This is not a check most sweep crews perform.
DuraFlex Service in Lennox: What Local Conditions Mean for Your Equipment
Here’s something about Lennox that doesn’t show up on generic chimney pages. This is an unincorporated pocket of LA County with a housing stock dominated by 1940s-to-1960s stucco bungalows and small duplexes, and a significant share of those units are rentals. When a tenant doesn’t use the fireplace, landlords cap it. When a remodel happens, the flue gets drywalled over. So in Lennox, we regularly encounter DuraFlex liners that were installed correctly years ago but are now sealed behind a wall with no visible access point. Before we can clean, we have to verify venting through alternative access points: the roof, the top plate, sometimes a cleanout if one exists. That’s a step rarely needed in neighboring incorporated cities where owner-occupied homes keep their fireplaces accessible. If you live in Lennox and aren’t sure whether your DuraFlex liner is still venting, call us before you light anything. Our crew recently serviced a 1950s stucco bungalow near the corner of Lennox Boulevard and 104th Street where the homeowner reported smoke backup after the first rain. We found a DuraFlex SW liner with corroded seams and a cracked crown letting water in. We replaced the damaged section, installed a new multi-flue cap, and waterproofed the crown. The backup stopped, and the liner is now venting safely.
DuraFlex Models & Products We Service in Lennox
We service the full DuraFlex residential lineup:
- DuraFlex SW (Standard Wall) Stainless Steel Liner – the most common liner we see in Lennox’s original masonry chimneys.
- DuraFlex Pro (Insulated) Flexible Liner – used in retrofit applications where clearance or draft requirements call for insulation.
- DuraFlex Chimney Cap – replacement and new installs, sized to your flue and crown.
- DuraFlex Top Plate and Flashing Kit – we replace damaged top plates and flashing to stop water intrusion at the roof line.
For critical components like liners and caps, we use OEM DuraFlex parts to ensure proper fit and safety. For non-structural items, we’ll use quality aftermarket parts when they meet our standards. We keep common DuraFlex components in stock for Lennox jobs, which means less waiting when a repair is needed.
See the difference
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After
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AfterDuraFlex Service Pricing in Lennox
DuraFlex chimney cleaning in Lennox typically runs $180 to $340 depending on liner length, accessibility, and how much creosote or debris has accumulated. If we’re adding a Level 2 inspection, which is common in Lennox given the number of concealed and previously capped flues, plan for the higher end of that range. A cap replacement or liner section repair adds to the total, but those costs are specific to what we find. What drives cost here: the condition of the liner, the roof configuration on these flat and low-pitch Lennox homes, and whether we need to access the flue through alternative points because the fireplace is sealed. Every estimate includes a camera inspection of the liner and a written report with photos. You’ll know exactly what we recommend and why before any work starts. Call (855) 382-6159 for an exact quote.
Serving Lennox, CA — Our Local Coverage Area
We’re based in the Lennox 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 – DuraFlex Chimney Cleaning in Lennox
Yes, in most cases. We verify venting through the roof access point or top plate, then clean the liner from the top down. If the flue is completely drywalled over with no access point, we’ll tell you what opening or access modification is needed before we can safely clean it. Call (855) 382-6159 if you’re not sure what’s behind your fireplace wall.
The marine layer and salt air accelerate corrosion at a liner’s seams and on the cap and flashing. That’s why we inspect seams, not just the liner bore. In Lennox, we see more seam corrosion and cap deterioration than in inland cities, even when the fireplace has been used lightly. A Level 2 inspection catches this before it compromises venting.
Keep the crown sealed, the cap in good condition, and the flashing watertight. In Lennox, we recommend chimney waterproofing as a preventive measure, not a repair afterthought. A properly applied waterproofing treatment on the masonry exterior keeps water from soaking into the chimney and reaching the liner. Pair that with a solid DuraFlex cap and you’ve addressed the two most common water entry points.
Both. We assess the liner’s actual condition with a camera before recommending anything. If the liner can be cleaned and reused safely, we clean it. If there’s localized damage, like a corroded section or separation at the top plate, we repair that section with OEM DuraFlex components. Full replacement is only recommended when the liner is compromised beyond safe repair. You’ll see the camera footage yourself, so the recommendation is based on evidence.
Because Lennox has so many capped and concealed flues, a standard visual check isn’t enough. A Level 2 inspection includes a camera scan of the entire liner, which is the only way to see seam corrosion, pinhole perforations, and blockages that are invisible from the fireplace opening. For a rental property purchase, a change in use, or after any weather event, this is the inspection that tells you the real story. Call (855) 382-6159 to schedule one.
Service Areas Near Lennox
We also provide DuraFlex service in DuraFlex service in Inglewood, just east of Lennox, and DuraFlex service in La Crescenta-Montrose for clients in the foothill communities. Our full Lennox service area page covers everything we do in Lennox and nearby parts of LA County. If you’re in Corona, Home Gardens, El Cerrito, Norco, Eastvale, or Jurupa Valley, we handle DuraFlex work there too.
Book Your DuraFlex Service in Lennox Today
If you can’t see daylight through the damper, we need to talk before you light that first fire of the season. Call (855) 382-6159 for a free estimate on DuraFlex chimney cleaning, inspection, or repair in Lennox. We service the entire 90304 ZIP and we’re scheduling now.
Written by Nolan Ferris, Owner at Corona Chimney Sweep, serving Lennox and surrounding LA County communities since our first DuraFlex install.