Masonry repair
Sweep & inspection
Caps & crowns
Flue relining
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.
Fast, Reliable Gas Fireplace Repair Across Castle Hills
Gas fireplace repair in Castle Hills typically runs $185 to $520 for most common fixes, with flue liner work starting around $1,200 when the clay tile has cracked. Most repairs we handle in Castle Hills take under two hours once we’re at the home. If your gas logs won’t light, the pilot keeps dropping, or you smell gas in the house, call us at (254) 276-4116 and we’ll get a technician scheduled for a date and window you pick, not a four-hour guess.
We work throughout Castle Hills regularly, from the older hillside sections around Hitching Post Lane to the ranch homes off West Avenue and the two-story traditionals near Larkspur. When we say we know Castle Hills chimneys, we mean we’ve actually pulled nesting material out of flues on Timberlane, replaced rusted dampers on houses overlooking the namesake hills, and camera-inspected clay tile liners that shifted with the same expansive clay soil every homeowner here knows from foundation cracks in the driveway. Dispatch is coordinated from our Dallas-Fort Worth office, and our crews serve Castle Hills locally with live arrival tracking on every job.
Why Hadley Chimney San Antonio Is Castle Hills’s Preferred Gas Fireplace Repair Company
Hadley Chimney San Antonio has been doing Gas Fireplace Repair since 2003, and the cornerstone of our work in Castle Hills is simple: we show you the problem on video before we recommend a fix. No homeowner in Castle Hills should ever agree to a liner replacement or chimney cap install on a technician’s word alone. You should see the cracked tile, the rusted damper, or the creosote glaze with your own eyes. That’s the whole point of our camera inspection process, and it’s included as part of every diagnostic visit.
Castle Hills homeowners deal with a specific set of chimney issues tied directly to the city’s housing stock and geography. Homes built between 1960 and 1990 dominate the landscape, and nearly all of them have masonry chimneys with original clay tile flue liners. Those liners crack. The clay soil here expands and contracts, freeze-thaw cycles work on the mortar, and suddenly a flue that vented wood smoke for forty years is now venting gas exhaust through gaps into wall cavities. This is the exact scenario where camera evidence matters, and it’s the exact scenario our team sees most in Castle Hills.
Every Castle Hills job comes with the 365-Day Done Right Promise. That’s a written guarantee on every repair, and if the repair fails within a year, we come back and make it right at no charge. Not a prorated credit. Not a warranty you have to fight for. A free second visit. That’s a real commitment, in writing, on every gas fireplace repair we do in Castle Hills.
Styles & brands we work with
Our Gas Fireplace Repair Services in Castle Hills
Flue Liner Inspection and Replacement
If your Castle Hills home was built before 1990, there’s a strong chance your gas fireplace vents into a masonry flue that was originally sized for wood burning. Clay tile liners crack from settling and thermal stress, and in Castle Hills specifically, the expansive clay soils accelerate that process. We run a camera through the full length of the flue and record everything. If the liner is compromised, we typically recommend a DuraFlex stainless steel liner system sized correctly for the gas appliance, not for the old wood-burning fireplace. You’ll see the video before you approve a single dollar of work.
Chimney Cap Installation and Repair
This is one repair we recommend more often in Castle Hills than almost anywhere else we work, and the reason is specific to this city. Many chimneys in the older sections near the hills were built without proper caps. Rain gets in. Animals get in. The damper rusts, nesting material blocks gas venting, and in humid summer weather, moisture trapped in the flue amplifies any gas odor. We install and repair chimney caps sized to the flue, and on gas fireplaces in Castle Hills, this is often the single most important fix we make for carbon monoxide safety.
Gas Fireplace Venting and Draft Correction
When mortar joints spall in Castle Hills’ humid climate, brick and stone veneer can shift enough to pinch gas fireplace vent connectors. The result is a distorted draft: exhaust that should go up the flue instead lingers in the firebox or seeps into the room. We diagnose this with a smoke test and draft measurement, then correct the venting path. Often the fix is simpler than homeowners expect, but it starts with seeing exactly where the obstruction or misalignment is.
Gas Log Set and Pilot Assembly Service
Gas logs that won’t stay lit, yellow sooting on the glass, a pilot that drops every time the wind blows: these are the everyday calls we get from Castle Hills ranch homes and two-story traditionals alike. We service and replace thermocouples, thermopiles, gas valves, and log sets, and we always check the venting path while we’re in there. A gas fireplace that burns dirty is almost always a venting problem first, not a burner problem, and in Castle Hills homes with original flues, that’s doubly true.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Castle Hills
Our technicians work with the brands chimney professionals actually rely on: DuraFlex flexible liner systems, HeatShield ceramic repair compound, and Olympia Chimney components. That matters in Castle Hills because the repair has to hold up to clay soil movement, freeze-thaw cycles, and the humidity that works on exposed masonry year-round. We stock common parts for quick turnaround in Castle Hills, and if a special-order component is needed, we give you the timeline in writing before we leave.
Common Gas Fireplace Repair Problems We See in Castle Hills Homes
- Cracked clay tile flue liners from soil settling. Castle Hills sits on expansive clay, and the same movement that cracks driveways here also shifts masonry chimneys. Once a liner cracks, gas exhaust escapes through the gaps. Camera inspection finds this fast.
- Missing chimney caps on hillside homes. Homes in the older sections near the city’s namesake hills were often built without caps. Rain and animals get in, rust the damper, and block gas venting with nesting material. This creates real carbon monoxide risk.
- Mortar spalling from the humid subtropical climate. Castle Hills gets more humidity than most of Texas, and older brick and stone chimneys show it. Spalled mortar allows moisture in and can shift veneer enough to pinch vent connectors.
- Creosote in gas fireplaces. Yes, gas fireplaces can build creosote, especially in Castle Hills homes where the flue was originally sized for wood. A gas appliance on a masonry flue that was never relined creates cooler exhaust, which deposits creosote over time. It still has to be removed.
See the difference
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After
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AfterPricing for Gas Fireplace Repair in Castle Hills, TX
Here are the ranges you can expect in Castle Hills. Diagnostic visit with camera inspection: $185 – $275. Gas log set repair or pilot assembly replacement: $220 – $480. Chimney cap supply and install: $350 – $700 depending on flue size and roof access. Flue liner replacement with DuraFlex stainless steel: $1,200 – $2,800, with the higher end reflecting taller chimneys and more complex access on two-story Castle Hills homes. Smoke test and draft correction: $150 – $300. Every job gets a written price before any work starts. Call (254) 276-4116 and we’ll give you an exact quote for your Castle Hills home, free.
We Also Serve Cities Near Castle Hills
Hadley Chimney San Antonio provides the same camera-first, written-price process to homeowners in San Antonio, Selma, Timberwood Park, and Kirby. If you’re in any of those communities and dealing with a gas fireplace that won’t light, a chimney with no cap, or an old clay tile flue that’s never been inspected, the same team and the same 365-Day Done Right Promise apply.
Serving Castle Hills, TX - Our Local Coverage Area
We’re based in the Castle Hills 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 – Gas Fireplace Repair in Castle Hills
Yes, and that smell typically comes from moisture trapped in the flue, not from a gas leak in the line. When your Castle Hills chimney has no cap, humid air condenses inside the flue, and any residual gas odor from the burner gets carried back into the house. An uncapped flue also lets rain and animals in, which compounds the problem. We can inspect the flue with a camera, confirm the moisture entry point, and install a correctly sized cap. Call (254) 276-4116 for an exact quote.
You don’t need to tear anything down. We run a high-definition camera through the full flue from the firebox to the top, and you watch the footage with us. Cracked clay tile sections, gaps at the mortar joints, and areas where the tile has shifted show up clearly on screen. In Castle Hills homes from the 1960s through the 1980s, cracked liners are the single most common finding on gas fireplaces that were never relined, and the fix is a stainless steel liner, not masonry demolition.
That smell is almost always from nesting material or an animal carcass trapped in the flue, usually behind the damper or on top of the firebox smoke shelf. Chimneys in the older hills sections of Castle Hills often lack proper caps, which is how squirrels and birds get in. Cleaning the firebox won’t fix it because the source is higher in the flue. We remove the material, sanitize the accessible areas, and install a cap so it doesn’t happen again. Call (254) 276-4116 and we’ll get it scheduled.
Yes, creosote forms in gas fireplaces more often than homeowners expect, especially in Castle Hills ranch homes where a gas log set was installed into a masonry flue originally built for wood. The gas appliance produces cooler exhaust than a wood fire, and that cooler exhaust allows creosote to condense on the flue walls. Second-degree and third-degree creosote are fire hazards that have to be removed, and we see this pattern regularly in Castle Hills homes built between 1960 and 1980 that never had the flue relined.
Yes, even sealed gas log sets need a properly fitted chimney cap. The cap’s job isn’t just keeping sparks in; it’s keeping rain, animals, and debris out of the flue. In Castle Hills, where many original chimneys were built without caps, sealed gas fireplaces still get water intrusion that rusts the damper, blocks venting with nesting material, and creates real carbon monoxide risk. A cap is one of the most cost-effective repairs we do in Castle Hills, and it’s covered under the same written guarantee as everything else.
Call Hadley Chimney San Antonio for Gas Fireplace Repair in Castle Hills
If your gas fireplace in Castle Hills won’t light, smells off, or hasn’t been inspected in years, call (254) 276-4116 for a free estimate. You’ll get a live person on the phone, a scheduled window with live arrival tracking, a camera inspection you can watch, and a written price before any work starts. Every repair carries the 365-Day Done Right Promise, so if it fails within a year, the second visit is on us. That’s how gas fireplace repair in Castle Hills should work.
Written by Cory Mitchell, Owner at Hadley Chimney San Antonio, serving Castle Hills since 2003.