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 Katy, TX | Ashby Chimney Houston
We provide independent Gelco chimney cleaning and repair across Katy, TX, and the thing that sets our work apart here is simple: we check whether your fireplace is actually masonry or a factory-built metal system before we ever touch a brush. That matters in Katy because so many homes hide Gelco prefabricated units behind faux-stone veneers that look like traditional brick from the curb. Our techs carry the right poly brushes for those metal flues, and we quote a written price before any work starts. Call (903) 961-6496 for a free estimate.
Why Katy Residents Choose Us for Gelco Service
Our crew has spent years working on Gelco factory-built fireplaces across Katy’s post-1990 housing stock, and that experience shows up in small ways. We know which chase covers rust first on Cinco Ranch homes. We know how direct vent Gelco units behave after a hard freeze. And we know when a worn refractory panel is cosmetic versus when it’s a safety problem. Nathan Corliss, our owner, started learning the trade at Los Angeles Trade-Technical College and has been working Houston-area fireplaces long enough to spot trouble before it spreads. He’s the one who insists every job gets a written price and a written guarantee, no exceptions. That’s how we’ve operated since 2002, and it’s why Katy homeowners call us back year after year for Gelco sales & service.
Styles & brands we work with





Common Gelco Chimney Cleaning Problems We Solve in Katy
- Rusted chase covers on Gelco prefabricated units. Katy’s humid, rain-heavy climate works against metal chase covers year-round. We find rust perforation at the seams on Gelco units all over Katy, especially after wet springs. Water gets into the chase, drips down around the firebox, and starts causing real damage.
- Creosote buildup in Gelco venting mistaken for masonry. Homeowners in Katy’s master-planned communities often assume their fireplace has a traditional brick flue. When the actual metal venting goes years without a sweep because nobody realizes it needs one, creosote levels climb past what’s safe.
- Cracked refractory panels in Gelco inserts. Thermal cycling takes a toll on firebox panels, particularly in insert models that don’t get inspected often. We see warped and cracked panels in Katy homes where the fireplace gets used heavily in winter then sits idle through the humid summer.
- Damaged termination caps from Katy storms. Hail and wind-driven debris knock termination caps loose or dent them enough to cause downdrafts. A damaged cap also invites birds and squirrels into the flue, which we find more often than homeowners expect.
- Water intrusion around the flue pipe on two-story homes. Katy’s heavy downpours find every gap. On Gelco units with factory flashing, we regularly see water tracking down the outside of the flue pipe after a bad storm season. Catching this early keeps the chase interior dry.
Gelco Service in Katy: What Local Conditions Mean for Your Equipment
Here’s something most generic Gelco service pages won’t tell you about Katy. In master-planned communities like Cinco Ranch, a huge number of Gelco fireplaces sit behind faux-stone or brick veneers that make the metal flue completely invisible from the outside. From the street, the house looks like it has a masonry chimney. It doesn’t. It’s a factory-built metal system inside a framed chase, and that changes how the cleaning has to be done. Standard wire brushes can scratch or damage Gelco’s metal liners, so we verify the actual chase construction before the first sweep and use poly brushes suited to the unit. We also inspect the chase cover for rust at the same visit, because in Katy’s humidity that thin metal cap is usually the first component to fail. This is a different job than what you’d get in older parts of Houston where true masonry chimneys are more common. If you live in Katy and you’re not sure what’s behind your stone veneer, we’ll tell you before we touch it.
Gelco Models & Products We Service in Katy
We service the full range of Gelco factory-built systems you’ll find in Katy homes: the Gelco Fireplace Insert, Gelco Vent-Free Fireplace, Gelco Direct Vent Fireplace, and Gelco Prefabricated Fireplace. For repairs, we use OEM Gelco parts when available from local suppliers, but we’ll say plainly when a quality aftermarket component like a stainless termination cap or poly brush set will outlast the original and cost less. We stock common Gelco-compatible parts locally so most Katy service calls don’t wait on shipping. Nathan’s rule on replacement: we recommend it when rust or warping affects safety, not just because a part looks worn.
See the difference
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AfterGelco Service Pricing in Katy
Most Gelco chimney cleanings in the Katy area run between $180 and $340, depending on the unit type, how much creosote is present, and whether any repairs come up during the inspection. Direct vent and vent-free Gelco models tend to land on the lower end of that range. A Gelco insert that hasn’t been cleaned in years will take longer and may run higher. Every estimate includes a written price before work starts, so the number you see is the number you pay. If we find damage during the sweep, we show you photos from our camera inspection and only recommend work that actually needs doing. Call (903) 961-6496 and we’ll give you a straight number for your specific fireplace.
Serving Katy, TX - Our Local Coverage Area
We’re based in the Katy 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 Katy
We recommend a full cleaning and inspection once a year for Gelco fireplaces in Katy. The humid climate accelerates rust on metal components, and the occasional winter freeze stresses seals and panels. Annual service catches small problems before they become expensive ones. Call (903) 961-6496 to schedule and we’ll put you on a yearly reminder list.
You can technically replace a chase cover yourself if you can safely access the roof, but we’d recommend calling a pro. Chase covers sit at the roofline, often on two-story Katy homes, and a fall from that height changes a minor repair into a serious injury. We also see homeowners buy the wrong size cover for their Gelco chase, which means a second trip and more water getting in. Call (903) 961-6496 for an exact quote on a replacement.
A direct vent Gelco unit vents combustion byproducts outdoors through a sealed flue, so the cleaning focuses on the vent pipe and termination cap. A vent-free Gelco unit burns with no exterior venting, meaning cleaning centers on the burner, logs, and interior firebox surfaces. Both need annual attention, but the tools and process differ. We handle both, and we’ll quote you a written price before starting either job.
Freeze-thaw cycles in Katy can crack refractory panels and shift gas connections on Gelco inserts. We’ve also seen moisture freeze inside the valve assembly and cause it to stick. If your insert stopped working after a hard freeze, we’ll run a full diagnostic before recommending any repair, and we’ll show you exactly what we find. Call (903) 961-6496 to set up our Chimney Inspection in Katy.
Most post-2000 Katy homes with Gelco units use prefabricated metal flue systems, not clay tile liners. These metal liners need poly brushes, not standard wire ones, because wire can scratch the interior and shorten the liner’s life. That’s why we verify the system type before every sweep in Katy.
Service Areas Near Katy
We serve Katy and the surrounding communities, including Katy service area coverage that extends to Gelco service in Houston, Gelco service in Spring, Missouri City, and Friendswood. If you’re within a short drive of Katy, we’ll come out and give you the same written-price guarantee.
Book Your Gelco Service in Katy Today
Tell you the price first, explain the work second, put it in writing third, that’s the whole system. Call (903) 961-6496 to book your Gelco chimney cleaning in Katy and get a free estimate from a team that shows up in the window, leaves it cleaner, and stands behind every repair in writing.
Written by Nathan Corliss, Owner at Ashby Chimney Houston, serving Katy since 2002.