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.
Why San Bernardino Homeowners Choose Gelco Chimney Cleaning
San Bernardino Chimney Sweep provides independent Gelco in San Bernardino chimney cleaning, inspection, and repair for heat-circulating fireplaces, zero-clearance units, and inserts throughout the city. We are not a Gelco dealer or authorized representative, but our crew has worked on enough Gelco fireboxes in San Bernardino homes to know exactly how these units behave after years of mountain-adjacent burn seasons and Santa Ana wind cycles. The short version: we diagnose the actual problem before recommending anything, we carry OEM-spec parts for common Gelco failures, and we will tell you plainly when a unit is worth fixing versus replacing. Call (877) 516-7159 for a free estimate on Gelco cleaning or repair.
San Bernardino sits at the foot of the mountains, which means a lot of our Gelco service calls come from two very different kinds of homes. On the north side and along the Waterman Avenue corridor, foothill and mountain-edge homeowners burn real firewood through cool winter nights. Those Gelco units accumulate heavy creosote loads that flatland Inland Empire sweeps rarely see. Downtown and around the older core, we find Gelco fireplaces installed years ago into 1920s through 1950s homes, often paired with original masonry chimneys that were never properly lined for a factory-built unit. Both situations create specific wear patterns we will get into below. The point is that Highland Gelco service or work elsewhere is not the same as Gelco service in San Bernardino with its mountain-adjacent winters and longer burn season.
Why Trust San Bernardino Chimney Sweep for Your Gelco Chimney Cleaning?
This work comes down to familiarity. A Gelco heat-circulating fireplace is not the same animal as a basic masonry firebox. The steel firebox, the heat exchanger tubes, the refractory brick lining, the factory flue connection: every one of those components has a known set of failure modes, and we have seen most of them in San Bernardino homes. Our techs know where Gelco units in this climate tend to crack, warp, or clog first. That means we spend less time diagnosing and less of your money chasing the wrong repair.
Allen Prescott owns San Bernardino Chimney Sweep and has spent the better part of three decades working on chimneys and fireplaces across the Inland Empire. He grew up near the Kendall Drive corridor in San Bernardino, picked up HVAC and building systems fundamentals at San Bernardino Valley College, and narrowed his focus to chimney maintenance and venting safety because it turned out to be more consequential than most people realize. The company philosophy is straightforward: use contractor-grade materials, not hardware-store substitutes, and be honest about what actually needs to be done. A clean flue isn’t a luxury – it’s just how you keep the fire where it belongs.
For Gelco work specifically, we favor OEM-spec parts where they are still available. Factory-built units need matching flue components and heat exchanger tolerances to stay safe, so this is not the place for generic parts-bin substitutions. We will also service Gelco fireplaces alongside other major brands: DuraFlex, HeatShield, Olympia Chimney, Famco, and Copperfield. Being multi-brand means we are never trying to force a Gelco unit to survive past its useful life just because it is the only brand we work on. If it should be replaced, we say so.
Styles & brands we work with
Common Gelco Chimney Cleaning Problems We Fix in San Bernardino
These are the issues we actually see on Gelco units in San Bernardino, not a generic list from a training manual.
- Warped or seized dampers on Gelco heat-circulating fireplaces. The damper blade on these units sits close to the firebox and takes direct heat. After several San Bernardino burn seasons, especially with the dry heat and occasional over-firing, the blade warps or the hinge seizes. A warped-open damper means cold air drafts down the flue when the fire is out, and smoke rolls into the room when it is lit. We replace the damper assembly with a matched OEM-spec part rather than trying to bend the old blade back into shape, which almost never holds.
- Creosote glaze on Gelco flue walls from low-burning fires. Foothill and mountain-edge homeowners in San Bernardino often run fires low and slow through cold nights to stretch a cord of wood. That produces the exact conditions for third-degree creosote glaze: a hard, shiny, tar-like coating that mechanical brushes alone will not remove. We see this consistently on north-side and Waterman Avenue corridor Gelco installations. Left alone, that glaze is a chimney fire waiting for a spark.
- Heat exchanger tube cracking on Gelco heat-circulating fireplaces. The heat exchanger tubes are steel, and in San Bernardino’s dry climate with repeated hot-cold cycles, they can crack or warp at the welds. When that happens, hot gases can leak around the firebox instead of venting up the flue. This is a safety repair, not a cosmetic one. If the crack is small and accessible, we may be able to repair it; if the firebox is compromised beyond a certain point, we recommend replacement and we will explain exactly what we saw.
- Seam separation where the steel firebox meets the refractory brick lining. Gelco factory-built fireplaces use a refractory brick liner inside a steel firebox. The seam between them can fail over time, especially on units in older San Bernardino homes where the original installation was not perfectly square or the chimney shifted slightly during dry-season settling. When that seam opens, creosote and moisture migrate behind the liner, where a sweep cannot reach them without disassembly.
- Rusted or pulled-away crowns and rain caps on Gelco zero-clearance chases. Santa Ana winds and the long dry season put real stress on exterior chase tops and caps. We regularly find Gelco zero-clearance installations in San Bernardino where the rain cap has rusted through or the chase crown has pulled away from the flue, letting water into the system. Water plus creosote makes a corrosive slurry, and the damage compounds quickly.
Gelco Parts & Our Repair-vs-Replace Approach
We use OEM-spec Gelco parts where they are still available, particularly for flue components, damper assemblies, and heat exchanger repairs. Factory-built fireplaces are engineered systems. The flue diameter, the firebox clearances, the damper fit: those tolerances matter for draft and for fire containment. A generic aftermarket damper that does not seat properly changes how the entire unit behaves. Where a quality aftermarket part exists and the OEM part is discontinued, we will use it and tell you we are doing so. But we do not install whatever is cheapest on the shelf, because on a wood-burning appliance that is a false economy.
We stock common Gelco damper assemblies, refractory panels, and chase caps locally for faster turnaround on routine Gelco repair in Muscoy and San Bernardino jobs. When an older Gelco has a cracked firebox or a heat exchanger that parts cannot repair, we tell the homeowner straight: replacement is the better money and the safer call. We will never recommend a liner patch or a weld job on a Gelco firebox that should be retired. If you want a second opinion, we will show you the camera footage and explain what you are looking at. Call (877) 516-7159 and we will give you an honest read on your Gelco unit.
Our Gelco Service Process – Step by Step
Every Gelco job follows the same structure, whether it is a cleaning or a repair.
- 1
Diagnosis and camera inspection. We run a camera up the Gelco flue and inspect the firebox, damper, heat exchanger tubes, and refractory panels. On a Gelco unit, we are looking specifically at seam integrity, damper seat, and creosote stage. You see the footage yourself so nothing is hidden behind a recommendation.
- 2
Cleaning or repair, done in the right order. If the flue needs sweeping, we do that first, using brushes and rotary tools matched to the Gelco flue diameter. If there is glaze, we remove it with mechanical methods appropriate for the liner type. Repairs come after the flue is clean, so we are working on a surface we can see.
- 3
Parts replacement with OEM-spec components. Whether it is a Gelco damper assembly, a refractory panel, or a chase cap, we use parts that match the unit’s original specifications. We do not adapt a part; we get the right one.
- 4
Smoke test and draft verification. After any Gelco repair, we pull a smoke test to confirm the draft is moving correctly and nothing is leaking around the firebox. We do not leave until the unit draws properly and the flue is clear.
- 5
Warranty-safe documentation. We document what we found, what we did, and what we recommend next. If your Gelco unit is still under any coverage, that record supports your position. If it is a repair we performed, you get the work documented the same way.
See the difference
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After
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After
Before
AfterGelco Products We Service & Install in San Bernardino
We service and repair the Gelco product families most common in San Bernardino homes:
- Gelco Heat-Circulating Fireplace: the steel firebox with heat exchanger tubes. These are the units where we most often see tube cracking and damper warping.
- Gelco Zero-Clearance Factory-Built Fireplace: designed to be framed into a wall chase. Seam failure between steel firebox and refractory liner is the recurring issue here.
- Gelco Fireplace Insert: an insert installed into an existing masonry fireplace. Flue sizing and draft are the usual challenges, especially on older San Bernardino homes with oversized original flues.
- Gelco Gas Fireplace Insert: same installation realities, with gas-specific venting and log set requirements.
We stock common damper assemblies, refractory panels, and chase-top components for these Gelco lines locally. For larger or less common parts, we order direct from our supplier network, which includes DuraFlex and HeatShield products when a liner or resurfacing job is part of the repair.
We Also Service These Brands
Gelco is a significant part of our work in San Bernardino, but not the only one. We also service and install DuraFlex flexible liner systems for relining jobs and HeatShield chimney resurfacing for flues that need repair without full replacement. That broader capability matters because a Gelco fireplace installed into an old masonry chimney sometimes needs liner work that goes beyond the Gelco unit itself. We handle both sides of that job.
FAQs – Gelco Chimney Cleaning Service in San Bernardino
Yes. The flue on a Gelco heat-circulating fireplace is accessed from the firebox upward, so we sweep it without removing the unit or disassembling the surround. The heat exchanger tubes are part of the firebox assembly and stay in place during a standard sweep. What we do check carefully is the seam between the firebox and the refractory liner, because that is where hidden creosote can build up and create a fire path behind the liner.
The most common cause on Gelco units is a damper that is actually not opening fully, even when the handle or cable says it is. The blade can warp or the hinge can seize from repeated heat exposure, which leaves the flue partially blocked. The second cause is a flue clogged with creosote to the point that draft is reduced. The third, more serious cause is a crack in the heat exchanger tubes or firebox that is disrupting the draft and leaking smoke into the room. We diagnose all three before recommending any repair. If it is a damper issue, call (877) 516-7159 and we will replace it with an OEM-spec assembly.
For a Gelco unit used regularly during San Bernardino’s fall-winter burn season, annual cleaning is the right rhythm. If you burn real firewood and live on the north side or in a foothill neighborhood, you may need a mid-season inspection, because mountain-adjacent wood burning produces heavier creosote than a typical flatland fireplace. The dry climate also means creosote stays hard and flaky rather than getting washed out by humidity, which sounds better but actually concentrates the combustible material in the flue. A heavily used Gelco in San Bernardino, or one needing Gelco service in Loma Linda, should not go more than a season without a sweep.
It depends on how the crack is running and whether the refractory panel is structurally compromised. A hairline crack in a panel that is still seated properly can sometimes be stabilized. A panel that is spalling, displaced, or crumbling has to be replaced, and on a Gelco that means a matched refractory component, not a slather of fireplace cement. If the firebox itself is cracked behind the refractory, that is a more serious conversation, and often the honest answer is replacement. We will show you the camera footage and walk you through the decision.
Yes, in one important respect: the flue connection. A Gelco insert installed into an existing masonry fireplace uses a liner that runs from the insert outlet up through the old flue. If that original masonry flue was oversized for the insert, which we see often in older San Bernardino homes, the liner becomes the critical path for creosote and draft. Cleaning is done through the insert, and the goal is to clean the liner, not the old masonry surface around it. Get the liner clean, get the draft right, and the Gelco insert performs the way it was designed to.
Gelco chimney cleaning in San Bernardino generally falls in the same range as standard factory-built fireplace sweeps, but the final quote depends on creosote stage, flue accessibility, and whether the unit needs damper or refractory work. A straight sweep of a maintained Gelco flue is on the lower end. A Gelco with heavy glaze, a seized damper, or a failing firebox seam will cost more, and we will show you why before any work is approved. Call (877) 516-7159 for a free estimate on your specific Gelco unit.
Book Your Gelco Service in San Bernardino, CA
If your Gelco fireplace is due for a sweep, smoking into the room, or showing signs of firebox or damper wear, call (877) 516-7159 and we will schedule a diagnosis. Estimates are free, and you will see the camera footage yourself before any repair is recommended.
Written by Allen Prescott, Owner at San Bernardino Chimney Sweep, serving San Bernardino’s fireplace and chimney needs for nearly three decades.