Gas fireplace service
Sweep & inspection
Caps & crowns
Flue relining
Masonry repairLevel 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.
Why Los Angeles Homeowners Choose Gelco Chimney Cleaning
We provide Gelco service in Los Angeles, including chimney cleaning, repair, and service across the area, working on the brand’s terra cotta flue liners, cast-in-place concrete caps, top-mount dampers, and multi-flue caps. What sets our Gelco work apart is that we’ve been inside enough of these systems to know exactly where they fail in this city’s specific conditions: marine-layer moisture, long stretches of disuse, and ash from wildfire season working its way into flues that never see regular burning. Most Gelco chimney cleanings in Los Angeles run between $189 and $320 depending on flue length, access, and whether it’s a Level 1 basic sweep or a Level 2 with camera inspection.
We are an independent service provider, not affiliated with or authorized by Gelco. That’s a point we’re upfront about because it means our repair-or-replace recommendations aren’t driven by a manufacturer’s sales targets. They’re driven by what we actually find when we get on the roof with a flashlight and a rotary chain. If you have a Gelco system that’s been giving you trouble, call us at (213) 652-7061 and we’ll give you a straight answer.
Why Trust Ashby Chimney Los Angeles for Your Gelco Chimney Cleaning?
Our techs have serviced Gelco chimney systems across Los Angeles for over a decade, from mid-century ranches in the Valley to Sherman Oaks Gelco service calls and hillside moderns in Bel Air. That hands-on time matters more than any certification, because it means we’ve handled the specific quirks of the brand’s terra cotta liners, cast-in-place concrete caps, and top-mount damper assemblies in this exact climate. Nathan Corliss, our owner, grew up in Atwater Village surrounded by older Craftsman bungalows with working fireplaces, and he’s been cleaning and inspecting flues across the LA basin for going on eighteen years. He’s the guy neighbors call when they want a straight answer about whether their firebox is safe to light come November.
Every Gelco job we take on follows the same rules we apply to any chimney in Los Angeles: a written price before any work starts, a written guarantee on every repair, and a free second visit if the repair fails inside the guarantee period. That’s the Kingswell Guarantee, and it’s not an add-on. It’s how we’ve operated since 2002. We use genuine Gelco terra cotta sections and cap forms when they’re available, but we’re equally comfortable sourcing high-quality aftermarket gaskets, anchor bolts, and damper cables when OEM inventory has been discontinued. The goal isn’t brand purity. It’s a chimney that draws correctly and keeps the weather out.
Styles & brands we work with





Common Gelco Chimney Cleaning Problems We Fix in Los Angeles
Every chimney brand has its weak points. Gelco is no exception, and Los Angeles conditions tend to expose them faster than most places. Here’s what we actually see in the field:
- Terra cotta liner spalling from thermal shock. Gelco’s square and rectangular terra cotta liner profiles are sturdy, but they don’t handle rapid temperature swings well. We see this most often in Los Angeles fireplaces converted from wood to gas without proper venting adjustments. The gas flame heats the liner unevenly, the surface cracks and flakes away, and you’re left with pieces of clay sitting in the smoke shelf. If caught early, we can parge and seal the damaged section. If it’s spalled through, relining is the honest answer.
- Cast-in-place caps developing hairline cracks at the flue opening. Gelco cast-in-place concrete chimney caps form a tight seal, but the concrete pours can develop hairline cracks right where the flue tile meets the cap, especially after winter rain events in Los Angeles. Water seeps in, and over a season it works its way into the masonry. We rebuild these cap openings with a proper expansion joint so the flue tile and the concrete cap can move independently without cracking again.
- Top-mount dampers seizing on the pivot pins. Gelco’s chain-pull and lever top-mount dampers are prone to creosote buildup binding the pivot mechanism, particularly in Los Angeles homes where wood burning happens a few times a year. The creosote glazes onto the pins during the last fire of the season, hardens during the long idle stretch, and by November the damper won’t close all the way. Most of the time, the fix is a careful disassembly and pin cleaning, not a full damper replacement.
- Multi-flue cap mesh clogging with creosote glaze. The welded stainless steel mesh on Gelco multi-flue caps does its job keeping embers and animals out, but in kitchens where high-volume exhaust fans pull smoke back down the chimney, that mesh becomes a creosote collector. We’ve pulled caps in Los Angeles where the mesh was fully glazed over, throttling the draft. Cleaning the mesh and treating the cap surface usually solves it without replacing the cap itself.
- Bird and squirrel nests blocking flue runs. This isn’t exclusive to Gelco, but the brand’s flue profiles in hillside Los Angeles neighborhoods like Laurel Canyon and Mount Washington seem to attract nesting creatures during the long idle months. We’ve removed raccoon and bird nests from Gelco terra cotta liners on a regular basis, and in dry, windy conditions, a blocked flue with a nest sitting in creosote is a legitimate fire hazard, especially under Santa Ana winds.
Gelco Parts & Our Repair-vs-Replace Approach
When a Gelco component fails, the first question is always the same: can this be fixed without creating more problems than it solves? Our default stance is repair-first. If a terra cotta liner section is cracked but not spalled through, we’ll parge and seal it before recommending full relining. A cast-in-place cap with hairline cracks at the flue opening gets a rebuilt expansion joint. A seized top-mount damper gets new pivot pins and cables rather than a new damper assembly.
We use genuine Gelco terra cotta sections and cap forms when they’re available, because the dimensional match matters for a proper fit. For gaskets, anchor bolts, and damper cables, we prefer high-quality aftermarket parts that meet or exceed original specs, especially on older Gelco installations where OEM inventory has been discontinued for years. We carry a working inventory of common Gelco-compatible components in our Los Angeles service vehicle, which means many repairs happen on the first visit. But we’ll also be straight with you when a cast-in-place cap is beyond saving and a replacement form and pour is the only durable fix. Call (213) 652-7061 if you want an honest read on your situation.
Our Gelco Service Process – Step by Step
Here’s what happens when you book a Gelco chimney cleaning or repair with Ashby Chimney Los Angeles:
- 1
Diagnosis. We start with a visual inspection of the flue, damper, cap, and firebox. If your Gelco system has a history of smoking, drafting issues, or water intrusion, we’ll run a camera scope to see what’s happening inside the liner before we touch anything.
- 2
Written price. Before any work starts, you get a written price that covers the full scope. No exceptions. The number on the invoice is the number we quoted at the door.
- 3
Repair or cleaning. For a standard Gelco chimney cleaning, we run rotary chains to remove glazed creosote from terra cotta surfaces, then brush and vacuum. For repairs like crown rebuilding, damper service, or liner parging, we use materials suited to the specific Gelco component, not a one-size-fits-all approach.
- 4
Test and verify. After the work is done, we test the draft, confirm the damper opens and closes correctly, and check the cap seal. You see the finished result before we pack up.
- 5
Written guarantee. Every repair comes with a written guarantee. If a covered repair fails within the guarantee period, we return and fix it at no charge. That’s the 365-Day Done Right Promise.
See the difference
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AfterGelco Products We Service & Install in Los Angeles
We work on the full range of Gelco chimney systems commonly found in Los Angeles homes, including Gelco repair in Brentwood and surrounding areas, including the Gelco Terra Cotta Flue Liner in both square and rectangular profiles, Gelco Cast-In-Place Concrete Chimney Caps, Gelco Top-Mount Dampers in chain-pull and lever variants, and Gelco Multi-Flue Caps with welded stainless steel mesh. We stock common Gelco-compatible replacement parts locally for faster turnaround on cap repours, damper cable swaps, and liner parging. If your home has a mid-century masonry chimney with a Gelco terra cotta liner, or a hillside property with a Gelco multi-flue cap, we’re equipped for it.
We Also Service These Brands
While this page focuses on Gelco, we also offer our Chimney Sweep services and install materials from other established chimney-trade brands including DuraFlex and HeatShield. Our independence means we recommend the right product for the failure you’re dealing with, whether that’s a Gelco terra cotta repair, a DuraFlex stainless steel reline, or a HeatShield resurfacing treatment.
FAQs – Gelco Chimney Cleaning Service in Los Angeles
No, we are an independent Gelco service provider, not affiliated with or authorized by Gelco. That independence is the reason you get unbiased repair-or-replace recommendations based on what actually fails in the field, not what the manufacturer wants to sell. Call (213) 652-7061 for an independent assessment of your Gelco system.
Yes, in most cases. The usual culprit is creosote glaze built up on the pivot pins, which prevents the damper plate from seating properly. We disassemble the pivot assembly, remove the glaze, clean the seating surface, and install new aftermarket gasket material if the original is compressed. Only if the damper frame itself is warped or cracked do we recommend replacing the entire unit.
Hairline cracks at the flue opening are the most common failure point, and they’re repairable without removing the cap. We cut back the cracked concrete around the opening, install a proper expansion joint between the flue tile and the cap, and re-form the opening with a compatible cap mix. That expansion joint is what was missing in the first place, and it prevents the same crack from returning. If the cap has structural cracks across the full width or has separated from the chimney crown, we’ll tell you when replacement is the only durable fix.
Yes. Terra cotta is harder but more brittle than stainless steel. We use rotary chains specifically sized for the flue’s dimensions to remove glazed creosote from terra cotta surfaces, and we avoid aggressive wire brushing that could scratch or damage the clay. Stainless liners can handle a different brush profile. Using the wrong tool on a terra cotta liner is how you end up with micro-cracks that become real cracks a few seasons later.
Usually yes. The welded stainless steel mesh on Gelco multi-flue caps is a replaceable component on most installations, and in Los Angeles we see mesh rusted out more often around coastal neighborhoods like Playa del Rey than in the Valley. We source aftermarket stainless mesh that matches the original spec, cut it to the cap’s dimensions, and replace it without pulling the entire cap assembly.
Possibly. When a wood-burning fireplace is converted to gas in Los Angeles, many contractors remove the original damper entirely, which leaves an oversized opening at the top of the firebox. That changes the draft dynamics, and the Gelco terra cotta liner may not vent efficiently without the damper’s restriction. In many cases, we install a top-mount damper or a gas-rated flue restriction to restore proper draft. We can inspect your conversion and tell you what your specific flue needs.
Most Gelco chimney cleanings in Los Angeles run between $189 and $320, depending on flue length, roof access, and whether you need a basic Level 1 sweep or a Level 2 inspection with camera scope. Add-on work like damper repair, crown sealing, or multi-flue cap cleaning is priced separately and always quoted in writing before we start. Call (213) 652-7061 for an exact quote on your Gelco system, estimates are free.
Book Your Gelco Service in Los Angeles, CA
Say the price first, put the promise in writing, and leave the firebox cleaner than you found it. That’s how we’ve worked since 2002, and it applies to every Gelco chimney we touch in Los Angeles. Call (213) 652-7061 for a free estimate, and a live person will answer. We’ll get your Gelco flue drawing clean and safe before the next time you light a fire.
Written by Nathan Corliss, Owner at Ashby Chimney Los Angeles, serving Los Angeles since 2002.