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 Sierra Madre, CA | San Bernardino Chimney Sweep
We provide independent Gelco chimney cleaning and repair across Sierra Madre, and we’ll be direct about what that means: nobody at our company answers to Gelco, and we don’t do warranty paperwork. What we do is open Gelco inserts and fireboxes every week, know their quirks, and fix them. The thing that makes our Gelco work different here is the canyon. Sierra Madre sits at the mouth of Santa Anita Canyon, and the seasonal winds push leaves, grit, and ash down uncapped flues in ways flatland chimneys never see. That means a Gelco fireplace in Sierra Madre usually needs more than a quick sweep, it needs someone who checks the damper, the baffle, the gasket, and the flue cap all at once. Call us at (877) 516-7159 and we’ll tell you what yours actually needs.

Why Sierra Madre Residents Choose Us for Gelco Service
We’ve torn into enough Gelco units to know the difference between a baffle that’s warped from heavy winter burn cycles and one that’s got a few seasons left. That’s the kind of answer you pay for when you hire a specialist. Allen Prescott runs our crew and grew up working on Inland Empire chimneys before narrowing his focus to venting and firebox work, and he’s brought that same unhurried, straight-talking approach to Sierra Madre. We’ll tell you what we found, why it matters, and whether it needs doing now or can wait. A clean flue isn’t a luxury, it’s just how you keep the fire where it belongs.
We’re also local enough to matter. We know the old Craftsman and Spanish Colonial cottages near Sierra Madre Blvd, the hillside rebuilds with prefab metal fireboxes, and the way canyon-mouth weather works. When you call about a Gelco insert that won’t stay lit or a damper that’s stuck after the dry months, we don’t have to guess what you’re dealing with. See our Gelco sales & service page for the full scope of how we work on this equipment, or read more about the neighborhoods we cover in our Sierra Madre service area.
Styles & brands we work with





Common Gelco Chimney Cleaning Problems We Solve in Sierra Madre
- Seized damper linkage and pivot pins. Sierra Madre’s long dry spells mean fireplaces sit untouched from April through October. The metal pivot on a Gelco damper rusts and seizes in place, then gets forced open on the first cold canyon-wind night in November. It snaps. We free, re-pin, and re-align these regularly.
- Cracked and warped baffle plates and refractory panels. Foothill winter burn cycles run hot and long. A Gelco wood insert with the original baffle from 15 years ago often shows heat fatigue and small cracks in the refractory panels, which lets heat reach the firebox shell and the framing beyond it. We replace with OEM Gelco parts when available, or quality aftermarket when the line’s discontinued.
- Wind-driven debris and nests in the flue above the insert. This is the Sierra Madre classic. Uncapped flues on the old downtown core cottages fill with leaves, grit, and occasional starling or squirrel nests between seasons. A homeowner fires up their Gelco insert and the smoke damps back because the clay tile liner above it is half blocked.
- Gasket and glass-door seal failure on Gelco gas and wood units. The door gasket dries and flattens over time, especially in the hot, dry foothill air. Room air leaks past the firebox, creosote and soot collect in the flue above the insert, and the draw suffers. We replace gaskets and reseal glass doors as part of a full service.
- Millivolt pilot assemblies and thermocouple/thermopile wear on older Gelco gas inserts. Many Gelco gas inserts in Sierra Madre still run standing pilots with millivolt controls. In cool canyon weather, a tired thermopile can’t hold the pilot valve open and the unit won’t stay lit. We test, clean, and replace thermocouples and thermopiles on the spot when possible.
Gelco Service in Sierra Madre: What Local Conditions Mean for Your Equipment
Sierra Madre’s position at the mouth of Santa Anita Canyon isn’t scenic trivia. It’s the reason our techs find flues packed with wind-driven debris on the old cottages just off Sierra Madre Blvd, especially the 1908-era bungalows with original clay tile liners and no modern flue cap. Those canyon winds come down hard in the fall and push leaves, grit, and ash down every uncapped flue along the historic core. A Gelco insert vented into that old clay liner doesn’t care how clean its firebox is if the flue above it is half choked. That’s why we don’t just sweep the Gelco firebox and call it done. We run a Level 2 Inspection on the full venting path, check the cap or lack of one, and tell a homeowner plainly if the flue needs a cap installed to stop next season’s wind from feeding it debris again. Flatland chimney companies don’t see this pattern regularly. We do.
Then there’s the damper problem. On one 1920s cottage just off Sierra Madre Blvd, our tech pulled a Gelco wood insert whose damper pivot had seized solid after a dry summer, and found the flue above it packed with wind-driven leaves and an old bird nest that never burned clear. We freed and re-pinned the damper linkage, replaced the crumbling baffle and door gasket, swept the clay tile liner, and capped the flue so next season’s canyon wind stops feeding it debris. That’s the difference between a sweep and an actual service call.
Gelco Models & Products We Service in Sierra Madre
We work on Gelco wood-burning fireplace inserts, Gelco factory-built prefab fireboxes and metal fireplace units, Gelco gas fireplace inserts with millivolt standing-pilot controls, and Gelco glass-door fireplace enclosures and bi-fold screen sets. On any of these, we use OEM Gelco parts when the specific line still has them available. When the OEM line is discontinued, which happens with older prefab units, we use quality aftermarket gaskets, glass, dampers, and pilot components. We keep common parts stocked for fast Sierra Madre turnaround, gaskets, thermocouples, damper pins, refractory panels, so you’re not waiting a week while your fire stays cold.
And we’ll tell you truthfully when a repair doesn’t make sense. A rusted-out Gelco firebox that’s rotted through the floor pan isn’t going to be saved by a new gasket. We say so plainly and talk through the repipe or replacement options instead of selling a repair that won’t hold.
See the difference
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After
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AfterGelco Service Pricing in Sierra Madre
Gelco chimney cleaning in Sierra Madre typically runs between $180 and $340 for a standard sweep with a Level 2 Inspection included. The cost moves based on three things here. First, access. Steep hillside lots and tight roof pitches on the foothill side of town make ladder setup slower. Second, condition. A flue that’s packed with wind-blown debris, nests, or a decade of creosote takes more time than a maintained one. Third, what we find. A seized damper pivot, a failed gasket, or a cracked baffle adds parts and labor. We give you a flat quote before we start sweeping, and the free estimate covers the same inspection we’d do on the job. Call (877) 516-7159 for a firm number on your specific Gelco setup. Estimates are free, and you’ll see the camera evidence before you commit to anything we find.
Serving Sierra Madre, CA — Our Local Coverage Area
We’re based in the Sierra Madre 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 – Gelco Chimney Cleaning in Sierra Madre
My Gelco insert’s damper won’t budge after sitting all summer – is that a repair or a replacement? Nine times out of ten it’s a repair. The pivot pin seizes from rust and dry months, and the linkage just needs to be freed, cleaned, and re-pinned. We replace the damper only when the linkage is actually snapped or the damper plate itself is warped beyond functional use. Call (877) 516-7159 and we’ll tell you which one yours is before we touch it.
Does a Gelco prefab firebox need the same service as the old masonry fireplace in my Sierra Madre bungalow? No, and treating them the same causes problems. Prefab firebox units have specific clearances, refractory panels, and venting that don’t overlap with a 1920s clay tile chimney. We service both, but we service them differently. The prefab unit gets its own inspection format, and we check the flue connection the way the manufacturer specified, not by eyeballing masonry.
Why does my Gelco gas insert keep going out on cool canyon-wind nights? Usually it’s a tired thermopile or thermocouple on a millivolt pilot system. Cool air moving down the canyon makes the draft pull stronger on the pilot flame, and a weak thermopile can’t hold the gas valve open. We test, clean, and replace these pilot components regularly on older Gelco gas inserts in Sierra Madre. Call (877) 516-7159 and we can diagnose it on the first visit.
Can you cap the flue above my Gelco insert so the wind stops dumping debris in? Yes. A properly fitted flue cap with ember arrest and spark screening is the single most useful upgrade for Gelco owners in this part of Sierra Madre. We measure, source, and install caps that let the flue breathe while keeping out wind-driven leaves, ash, rain, and the occasional bird. In fire season, the spark screening matters too. Call (877) 516-7159 for a no-pressure estimate.
Do you inspect the Gelco insert and the chimney it vents into, or just the firebox? Both, every time. We open the Gelco unit, check the damper, baffle, gaskets, panels, and pilot if present. Then we run a Level 2 Inspection on the full venting path above it: the flue, the clay tile or metal liner, the connector, the cap, and the mortar crown. If the insert is clean but the flue is clogged, we haven’t actually solved your problem. You’ll see the camera footage from both.
Service Areas Near Sierra Madre
We run Gelco service through the nearby San Gabriel Valley and Inland Empire foothills. In addition to Sierra Madre, we cover Gelco service in Buena Park, Gelco service in Garden Grove, Rubidoux, Loma Linda, and Colton. If you’re on the edge of any of these areas, just call and we’ll confirm coverage for your address.
Book Your Gelco Service in Sierra Madre Today
We’re an independent Gelco service provider. We work on the equipment, not the warranty paperwork, and we’ll tell you straight what your insert, firebox, and flue actually need. Call (877) 516-7159 to book a sweep or schedule a free estimate. Fall fills up fast in the canyon.
Written by Allen Prescott, Owner at San Bernardino Chimney Sweep, serving Sierra Madre and the surrounding foothills.