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 Pasadena Homeowners Choose Gelco Chimney Cleaning
Flint Chimney Co Pasadena provides independent Pasadena Gelco service including chimney cleaning, inspection, and repair across Pasadena and the San Gabriel Valley. We service original Gelco terra cotta flue liners, Gelco stainless steel liner systems, Gelco caps, and full Gelco masonry chimney builds, with a written price before any work starts and a one-year guarantee on every repair. We are not affiliated with or authorized by Gelco. We are a local, independent chimney company that knows these systems from the inside of the flue, not from a catalog.
What makes our Gelco work different in Pasadena is simple: we understand how local conditions actually affect these products. Pasadena’s pre-1940 Arts and Crafts and Spanish Colonial homes often carry original, unlined or Gelco-lined masonry chimneys that were built for coal and wood. Decades of seismic movement, sporadic fireplace use, and acidic creosote from oak and eucalyptus fires put specific stress on Gelco flue tiles and crowns. Cleaning here is as much about structural inspection and code compliance as it is about soot removal. Hank Delano and our crew have worked Gelco chimneys from Bungalow Heaven to Madison Heights for going on eighteen years, and we also handle Gelco repair in Glendale. We quote a flat price before the tools come off the truck. Call (626) 657-5513 for a free estimate.
Key takeaways:
- We are an independent Gelco service provider, not a factory-authorized dealer, which means we recommend repair or replacement based on what the flue actually needs, not on a sales quota.
- Every Gelco job gets a written price up front, and every repair carries our 365-Day Done Right Promise in writing.
- Pasadena’s seismic history and mild, dry climate create specific Gelco failure patterns that a generic chimney sweep will miss.
Why Trust Flint Chimney Co Pasadena for Your Gelco Chimney Cleaning?
Gelco chimneys are not all the same. A 1920s Pasadena Craftsman with original Gelco terra cotta liners needs a different hand than a 2000s remodel with a Gelco stainless steel liner kit. We have cleaned and repaired Gelco chimney systems across Pasadena for over a decade, and we treat each flue as its own job. Our techs know where Gelco terra cotta tiles typically crack under seismic stress, where stainless liner seams corrode from acidic creosote condensation, and what a Gelco crown looks like when moisture has been working behind it for years. That knowledge means we arrive with the right tools and the right parts, not a generic sweep kit and a guess.
Hank Delano grew up in Los Angeles and learned the trade through the HVAC and sheet metal program at Los Angeles Trade-Technical College. He has been cleaning and inspecting chimneys for eighteen years, and he runs the crew the same way he runs a job site: short sentences, real numbers, no filler. Every technician who walks through your door is background-checked and uniformed. The price you approve is the price on the invoice. And if a covered Gelco repair fails within one full year, we return at no charge. That is the Garrison Standard, the same code every Garrison Partners location follows, and it is non-negotiable on every job we do in Pasadena.
The flue either draws or it doesn’t. Let’s find out which.
Styles & brands we work with





Common Gelco Chimney Cleaning Problems We Fix in Pasadena
- Cracked or spalled Gelco terra cotta flue tiles. Pasadena sits in earthquake country, and the 2024 swarm put real stress on older masonry chimneys. Gelco terra cotta liners from early 20th-century builds were not designed for lateral movement. When tiles crack, creosote and heat escape into the chimney chase. During a Level 2 inspection we scan for exactly this, because you cannot see it from the firebox.
- Corrosion at Gelco stainless steel liner seams. Wood-burning fireplaces in Pasadena produce acidic creosote, especially when fires are occasional and the flue never gets hot enough to dry out. That acid condenses at the seams of Gelco stainless liners and eats through over time. We see this most often in homes where the fireplace is used a few times each winter and ignored the rest of the year.
- Deteriorated Gelco chimney crown mortar. The crown is the concrete cap that sheds water away from the flue. On older Pasadena homes, Gelco crown mortar cracks from thermal cycling, even without freeze-thaw weather. Once water gets behind the liner, it accelerates spalling and rust. We repair crowns with proper slope and a waterproof coating, not a cosmetic patch.
- Warped Gelco damper assemblies. Heat exposure warps the metal throat damper over time. A warped Gelco damper will not seal, which sends heated house air up the flue in winter and lets chimney odors drift down in summer. This is a common issue on Pasadena homes where the fireplace gets heavy use between November and February.
- Creosote glaze in seldom-swept Gelco flues. Pasadena’s mild climate means many fireplaces sit unused for months. Oak and eucalyptus smoke produces a hard, shiny creosote glaze that a standard brush will not remove. We use rotary cleaning heads and chemical treatments to strip glaze without damaging the Gelco liner beneath it. This is routine for us, not an upsell.
Gelco Parts & Our Repair-vs-Replace Approach
For Gelco systems we use genuine Gelco replacement parts when they are available and when they are the right call. A Gelco cap matched to the existing flue tile dimensions is usually the cleanest fix. But we do not default to OEM parts if a quality aftermarket stainless steel liner or cap from a reputable manufacturer offers better longevity. DuraFlex and HeatShield make excellent stainless products that we stock locally for fast turnaround. Our rule is simple: the part gets specified by the job, not by margin.
So when do we repair, and when do we replace? If the Gelco masonry core is structurally sound, we repair. That means replacing cracked terra cotta sections, sleeving with a proper stainless liner, rebuilding the crown, or swapping a warped damper. Full replacement only happens when the masonry core itself is compromised beyond safe repair. We will show you the camera footage before we recommend anything. You see what we see. If the chimney can safely wait another season, we will tell you that plainly. Call (626) 657-5513 and we will give you an honest read on your Gelco system.
Our Gelco Service Process – Step by Step
- 1
Diagnosis. We run a Level 2 camera inspection on every Gelco chimney before we clean or quote a repair. The camera goes up the flue, and we record what it sees: cracked terra cotta, corroded liner seams, crown gaps, animal nests. You get the footage. Nothing is recommended on guesswork.
- 2
Written proposal. We put the scope and the price in writing before any work starts. If a Gelco flue tile is cracked, the proposal names the tile location, the repair method, and the material we will use. The number you approve is the number you pay.
- 3
Cleaning and repair. For standard sweeps we remove creosote and debris with brushes sized to the Gelco flue dimensions. For repairs we pull damaged sections, install Gelco or Gelco-compatible replacement components, and rebuild mortar joints properly. We protect the hearth and work area, and we leave it cleaner than we found it.
- 4
Testing. After the work, we run a draft test and a final camera pass. The flue either draws or it doesn’t. We verify it does before we call the job complete.
- 5
Warranty. Every repair is covered by the 365-Day Done Right Promise. If a covered Gelco repair fails within one full year, we return at no charge. That commitment is in writing, on every job, no exceptions.
See the difference
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After
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After
Before
AfterGelco Products We Service & Install in Pasadena
We service the full range of Gelco chimney products found on Pasadena homes. That includes Gelco Terra Cotta Flue Liners, which are common in pre-1940 masonry chimneys and prone to seismic cracking. We also service Gelco Stainless Steel Chimney Liners, often installed in renovation work over the last two decades, where seam corrosion is the main failure point. We inspect, repair, and install Gelco Chimney Caps, including custom-fit caps for odd flue dimensions on older Craftsman chimneys. And we work on complete Gelco Masonry Chimney Systems from the firebox to the crown. We stock common Gelco replacement components locally and order specialty parts as needed, with clear timelines before you commit.
We Also Service These Brands
Gelco in Burbank and Pasadena is a significant part of our work, but not the only brand we touch. We regularly install and service DuraFlex stainless liners and HeatShield resurfacing systems, along with components from Olympia Chimney, Famco, and Copperfield. That matters because a good solution for your chimney is the right product for the job, not the product we happen to have on the truck. We spec each job honestly and tell you why.
FAQs – Gelco Chimney Cleaning Service in Pasadena
Is Flint Chimney Co Pasadena authorized by Gelco?
No. We are an independent Gelco service provider in Pasadena, not a factory-authorized dealer. That independence means we recommend what the flue actually needs, including non-Gelco replacement parts when those offer better longevity or value. We are not selling against a manufacturer quota. Call (626) 657-5513 for a straight answer about your Gelco system.
Does Gelco still manufacture replacement terra cotta flue tiles for older chimneys?
Original Gelco terra cotta flue tiles for early 20th-century chimneys are generally no longer in production. When we find a cracked tile, we typically replace the affected section with a Gelco-compatible stainless steel sleeve or a matching terra cotta section sourced from salvage or current production equivalents. The right move depends on the flue condition and your fireplace fuel. We will show you the camera footage and explain your options in plain words.
Can you clean a Gelco chimney that has both a masonry flue and a stainless steel liner?
Yes. Many Pasadena homes have a hybrid setup: an original Gelco masonry flue that was partially relined with a stainless steel liner. Cleaning these requires care, because the brush size and method must match both surfaces without damaging the liner seams or dislodging mortar joints. We inspect first, then sweep with the correct tools. This is standard work for our crew, not a special request.
How often should a Gelco wood-burning fireplace in Pasadena be swept?
At least once per year if you burn regularly, and certainly before the first fire of fall. Pasadena’s mild climate means many fireplaces sit idle for months, and creosote glaze from oak and eucalyptus builds into a hard, flammable layer that a visual check will not catch. If you burn softwood or green wood, twice a year is smarter. A sweep through our Chimney Sweep services costs less than a chimney fire. Call (626) 657-5513 for scheduling and a flat price.
What causes a Gelco chimney crown to crack, and can you repair it?
Thermal expansion, seismic movement, and original construction methods are the usual causes. Pasadena does not get the hard freeze-thaw cycles that punish chimneys in colder climates, but decades of heating and cooling cycles stress crown mortar until it cracks. Yes, we repair Gelco crowns. We rebuild the crown with proper slope and a waterproof membrane, then seal the flue-to-crown joint. A cracked crown is a water intrusion risk, and water behind a Gelco liner is how small problems become expensive ones.
My Gelco damper is stuck open. Is that a common issue?
Yes. Warped Gelco damper assemblies are one of the most frequent service calls we get in Pasadena. Heat exposure warps the damper plate or the frame, and once it will not seat properly, your heated house air escapes up the flue all winter. We repair or replace the damper assembly, and we test the seal before we leave. If the damper is beyond repair, a top-sealing damper is often a better long-term fix than another throat damper.
How much does Gelco chimney cleaning cost in Pasadena?
A standard Gelco chimney sweep in Pasadena typically runs $189 to $329, depending on flue condition, creosote stage, and access. A Level 2 camera inspection runs $199 to $399 and is worth it if you have not had the flue checked since the 2024 earthquake swarm. Repairs are quoted separately, in writing, before any work begins. Call (626) 657-5513 and we will give you an exact number for your Gelco system.
Book Your Gelco Service in Pasadena, CA
If you own a Gelco chimney in Pasadena, or you are considering one, we can inspect it, clean it, and give you a written repair plan if it needs work. No pressure. No price moves at the door. Call Flint Chimney Co Pasadena at (626) 657-5513 for a free estimate.
Written by Hank Delano, Owner at Flint Chimney Co Pasadena, serving Pasadena since 2002.