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 Ontario, CA | San Bernardino Chimney Sweep
We provide independent Ontario Chimney Sweep DuraFlex cleaning and service across Ontario, CA, including ZIP codes 91764, 91798, 91758, and 91761. What makes our DuraFlex work different here is simple: Ontario’s postwar fireplaces run mostly uncapped, so the first fall call is usually a nest clear and cap install, not a heavy creosote scrape. We know DuraFlex liners, caps, and top plates from years of pulling them apart in local homes, and we treat them with OEM-spec parts and straight repair-or-replace calls. Call (877) 516-7159 for a free estimate.
Why Ontario Residents Choose Us for DuraFlex Service
DuraFlex makes a solid stainless liner system, but how it holds up in Ontario comes down to how it’s installed, maintained, and inspected. We see these components in original 1950s masonry fireplaces all over town, from the Euclid Avenue corridor to the newer tracts east of the 15. Owner Allen Prescott grew up near the Kendall Drive corridor in San Bernardino and spent nearly three decades working on Inland Empire chimneys before narrowing his focus to liner systems and venting safety. That background matters when a homeowner asks whether a DuraFlex liner needs a full replacement or just a seam repair. We’re familiar with DuraFlex SW smooth-wall liners, Pro relining kits, and their rain cap line, and we stock the OEM parts that keep a DuraFlex system running right. Our crew services the whole Ontario area, and when a flue issue shows up on camera, we explain exactly what we found, what it means, and what can wait. For a deeper look at the brand, see our DuraFlex sales & service page.
Styles & brands we work with
Common DuraFlex Chimney Cleaning Problems We Solve in Ontario
- Liner seams that loosen or crease after hot-cold cycles. DuraFlex flexible liners expand and contract with each fire. In Ontario, where most fireplaces are lit a handful of times per year, the seams get fewer but more extreme temperature swings. A creased seam lets smoke and soot bypass the liner wall, and you won’t see it without a Level 2 camera run. We sweep, then camera the flue before calling it clean.
- Rain cap screens crusted with dust and leaf debris. Ontario sits in semi-arid country with long dry summers. Dust settles on the cap screen month after month, and when Santa Ana winds blow, leaves and fine debris pack into it. A clogged cap screen starves the draft, so the fireplace smokes back into the room. Cleaning the cap is part of our annual sweep here, not an add-on.
- Top plates and rain caps loosening at the fasteners. Years of Inland Empire sun and the occasional winter rain work on the fasteners that hold a DuraFlex top plate and cap. We find rusted or backed-out screws on older installations, which lets water track down into the flue. A loose cap also rattles in the wind. We re-set top plates and replace fasteners with OEM-spec hardware.
- Bird and squirrel nests blocking the liner top. In Ontario’s older neighborhoods, a shocking number of 1950s fireplaces never got a chimney cap. Birds and squirrels nest in the flue during spring and summer, and the DuraFlex liner’s top opening takes the hit first. By fall, the liner is blocked, and the first fire smokes badly or won’t draw at all. We clear the nest, check the liner, and almost always recommend a cap.
- Soot and dust buildup from sporadic use. Ontario chimneys get used sporadically, sometimes only a few times a winter. That pattern doesn’t build heavy stage-three creosote, but it does let dry soot and dust sit for months. The soot bakes on during summer heat and hardens. An annual sweep keeps the liner walls clean and the flue flowing.
DuraFlex Service in Ontario: What Local Conditions Mean for Your Equipment
Here’s the Ontario-specific fact that changes how we work on DuraFlex systems: the older neighborhoods along Euclid Avenue and near downtown are full of original 1950s fireplaces that were built without chimney caps. That means every spring and summer, birds and squirrels move into the flue, and the top opening of a DuraFlex liner is the first thing they hit. By the time fall arrives, a homeowner who hasn’t used the fireplace since February lights a fire and gets smoke in the living room. The call isn’t about creosote. It’s a nest clear, a liner-top inspection, and a cap recommendation. We worked on a single-story stucco home off Euclid where a bird had packed a nest against the top plate of a DuraFlex liner and creased a seam about three feet down, a common issue we handle with DuraFlex service in Montclair as well. We pulled the cap and liner top, cleared the nest and soot, ran a Level 2 camera, and re-set the top plate with a new OEM rain cap. The homeowner lit a test fire that evening. Normal draft, no smoke. That’s the job in Ontario more often than people realize.
DuraFlex Models & Products We Service in Ontario
Our crews work on the full DuraFlex lineup that shows up in Ontario homes: the DuraFlex SW smooth-wall stainless flexible liner, the DuraFlex Pro flexible relining kit, and DuraFlex rain caps including the standard Rain Cap and Deluxe Rain Cap, plus Multi-Flue Caps for homes with multiple flues sharing a chimney chase. When a part needs replacing, we use DuraFlex OEM caps, top plates, and component fasteners wherever the specified model is still supported. For generic stainless caps where the OEM option doesn’t fit or isn’t available, we use quality aftermarket stainless that won’t compromise the liner. We keep common DuraFlex components on hand for faster turnaround across our Ontario service area, so a cap replacement or top plate re-set doesn’t mean waiting on a parts shipment.
See the difference
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AfterDuraFlex Service Pricing in Ontario
A standard DuraFlex chimney cleaning and inspection in Ontario typically runs between $195 and $295, depending on the flue condition, whether a cap needs clearing, and how much soot and debris has built up. If we find a damaged top plate or need to clear a nest, the job moves into the $295 to $495 range. Adding a Level 2 camera inspection, which we recommend for any liner showing a creased seam or after a nest clear, runs $150 to $350. We provide flat-price quotes before anyone books a sweep, and a free estimate includes the inspection, cap check, and an honest call on whether a liner repair makes sense or a replacement is warranted. Call (877) 516-7159 and we’ll tell you what the job will cost before we start.
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 – DuraFlex Chimney Cleaning in Ontario
No. Most nests sit on or just below the top plate, which means we can usually clear them by pulling the cap and liner top rather than the entire liner. We remove the nest, inspect the liner opening, and run a camera to confirm nothing is lodged further down or the liner wasn’t damaged. If the nest is packed further down the flue, we’ll tell you before doing anything and give you a price. Call (877) 516-7159 and we’ll talk through what we typically find in Ontario flues.
If you have a single DuraFlex liner, a DuraFlex Rain Cap or Deluxe Rain Cap is the straightforward call. It matches the liner diameter and mounts to the top plate cleanly. If you have multiple flues in one chimney chase, a DuraFlex Multi-Flue Cap covers them all, but it needs the right measurement and a level stone or concrete crown. We’ll measure, show you the options, and install the one that fits. For a free cap consultation, call (877) 516-7159.
Depends on the liner’s history. A stainless liner that’s been sitting uncapped in an Ontario chimney for years with no cap has probably hosted nests, soaked up winter rain, and gone through repeated hot-and-cold cycles. In that scenario the seams are the weak point, and you can’t see a creased or separated seam from the top. A Level 2 check costs $150 to $350, which is less than the smoke damage or liner replacement a missed seam can lead to. Not every DuraFlex flue needs a camera every year, but if it’s never been camera’d, it’s time. Call (877) 516-7159 to schedule.
We remove the old cap and inspect the top plate and fasteners. In older Ontario homes, those fasteners have often been through decades of sun and rain. We re-set the top plate, replace rotted or rusted fasteners, and seat a new OEM DuraFlex cap. If the top plate itself is warped or too far gone, we replace it with a DuraFlex-spec plate, the same standard we apply to our DuraFlex repair in Chino. The whole job usually runs $295 to $495 including the cap, and we’ll quote it before starting. Call (877) 516-7159 for a free estimate.
It depends on how severely the seam is creased and whether the liner is otherwise sound. A minor crease near the top can sometimes be re-formed and re-set, but a separated seam down the length of the liner is a failure point that will leak smoke and soot into the chimney chase. In that case, replacement is the honest call, and we’ll show you the camera footage before you spend a dollar. To have one of our techs assess your DuraFlex liner in Ontario, call (877) 516-7159.
Service Areas Near Ontario
Our Ontario crews also cover nearby communities including Rubidoux, San Bernardino, Colton, Muscoy, Loma Linda, and Rialto. For homeowners on the west side of the service area, see our DuraFlex service in Lakeview page. For those north of Ontario, we also cover DuraFlex service in San Antonio Heights.
Book Your DuraFlex Service in Ontario Today
If you haven’t looked at your DuraFlex liner this year, now’s the time. Call (877) 516-7159 and we’ll schedule a sweep, cap check, and camera inspection if your flue needs it. Free estimates, flat-price quotes before booking, and an honest answer on what your DuraFlex in Upland or Ontario system actually needs. As Allen likes to say, “A clean flue isn’t a luxury – it’s just how you keep the fire where it belongs.”
Written by Allen Prescott, Owner at San Bernardino Chimney Sweep, serving Ontario and the Inland Empire.