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 Boerne
Gas fireplace repair in Boerne runs anywhere from $185 for a simple thermopile replacement to $2,400 or more when an older flue liner needs a full reline before the unit is safe to burn again. Most repairs we handle in Boerne land between $225 and $650, and we give you a written price before any work starts. Call (903) 515-5079 and you’ll get a live person, not a voicemail queue, even if you’re calling at 11 p.m. because something smells like burnt dust and you don’t want to go to sleep with it.
We work on gas fireplaces all over Boerne, from the limestone homes along Main Street to the custom estates off Scenic Loop Road and the newer subdivisions spreading toward Fair Oaks. What’s different about Boerne is what’s behind the gas logs: many of these units started life as wood-burning masonry hearths, and the original flue, damper, and crown weren’t designed for gas exhaust. Our Gas Fireplace Repair team evaluates the whole system, not just the burner, because that’s where the real problems hide.
Key Takeaways
- Gas fireplace repair in Boerne typically costs $185 to $650 for common fixes; flue relining runs higher.
- Many Boerne gas fireplaces are conversions from original wood-burning hearths, so flue liner and damper condition matter.
- Freeze-thaw cycles and spring storms crack crowns and flashing on uncapped chimneys, causing ignition failures.
- Every job includes a written price before work begins and a written guarantee. If a repair fails, the second visit is free.
- Call (903) 515-5079 for a free estimate. A live person answers around the clock.
Styles & brands we work with
Why Alcott Chimney San Antonio Is Boerne’s Preferred Gas Fireplace Repair Company
Ruben Castellano founded Alcott Chimney Sweep in 2002, and the standard he built the company on hasn’t changed since: you should know exactly who’s coming to your door before they arrive. In Boerne, where many homeowners are alone during the day or have young kids at home, that matters more than a flashy truck. Every technician we send is background-checked, identity-verified, uniformed, and announced to you by name and photo before the visit. That’s the Threshold Standard, and it’s not an upgrade. It’s how we operate on every single call to Boerne.
We dispatch crews to Boerne from our San Antonio office, and our local technicians know the housing stock here: the 1800s limestone homes downtown, the sprawling Hill Country estates on acreage, and the stone-and-stucco builds in the newer subdivisions. We’ve repaired gas fireplaces in homes along River Road, in the neighborhoods around Cibolo Creek, and out toward the Guadalupe. When we tell you a flue liner is spalled or a damper is rusted open, we show you camera footage. You don’t take our word for it. You see it.
Boerne homeowners tell us two things consistently. First, they appreciate that a live person answers the phone at (903) 515-5079 no matter the hour. Second, they like that the written guarantee on every repair is real and specific: if a repair fails within the coverage period, the second visit is free. That’s the 365-Day Done Right Promise. We put it in writing because a vague promise isn’t worth the paper it isn’t printed on.
Our Gas Fireplace Repair Services in Boerne
Flue Liner Inspection and Replacement
In Boerne, gas fireplace repair often begins inside the flue, not at the burner. When a wood-burning fireplace gets converted to gas, the original clay flue liner frequently stays in place. Gas exhaust is hotter and more acidic than wood smoke, and over time it spalls the clay, leaving cracks and voids. Those voids let exhaust and carbon monoxide seep into wall cavities. We inspect every flue with a camera before we touch the gas valve. If the liner is shot, we replace it with a DuraFlex system sized for the gas appliance. On a home off Scenic Loop Road, the liner was the whole problem: the homeowner had soot stains and a lazy flame, and the fix wasn’t the burner. It was the liner.
Damper Repair or Replacement
Homes in Boerne’s historic district often have original dampers that predate gas conversion by decades. A damper designed for a wood fire rusts in place when gas exhaust condenses on it, and a rusted-open damper pulls conditioned air out of your house all winter. A rusted-shut damper is worse: it starves the gas flame of combustion air, creating incomplete combustion and carbon monoxide risk. We repair dampers when we can and replace them with gas-rated top-sealing dampers when we can’t. On converted fireplaces, the damper question is one of the first things we check.
Chimney Crown Sealing and Flashing Repair
Boerne’s freeze-thaw cycle is rough on chimney crowns. Water gets into hairline cracks, freezes on a cold Hill Country night, and widens the crack. Spring thunderstorms do the rest. When a crown leaks, water trickles down the masonry and onto the gas firebox controls, and that’s when you get intermittent ignition failures. We seal crowns with professional-grade materials, repair damaged flashing, and install chimney caps where they’re missing. It’s not glamorous work, but it’s often the difference between a fireplace that lights every time and one that doesn’t.
Annual Inspection and Preventative Maintenance
Even a gas fireplace you rarely use in a Boerne custom home needs an annual inspection. Animal intrusions happen fast: a ringtail or squirrel can nest in an uncapped flue in a week, and the first time you light the gas logs you’re burning nesting debris. Condensation and corrosion also progress slowly whether or not you run the unit. Our annual inspection checks the gas valve, thermocouple, thermopile, logs, burner, venting, and flue. We look at the whole system so you’re not surprised in January when it’s 28 degrees outside and you actually want the fireplace on.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Common Gas Fireplace Repair Problems We See in Boerne Homes
- Spalled clay flue liners in converted masonry fireplaces. Gas exhaust is hotter and wetter than wood smoke, and older clay liners crack under the thermal stress. This is the most common underlying issue we find in Boerne’s older limestone homes.
- Rusted dampers original to the wood-burning era. The damper sticks, the flame starves for air, and you get soot smudges above the firebox and a lazy yellow flame. We see this constantly in homes along Main Street and the surrounding historic district.
- Cracked crowns and failed flashing from freeze-thaw cycles. Boerne’s winter nights dip below freezing often enough to split crown mortar. Water then seeps into the chase and onto the gas controls, causing intermittent ignition failures.
- Animal nesting in uncapped chimneys. Ringtail cats and squirrels are common in the Hill Country, especially in the older limestone homes near Cibolo Creek. A nest inside a flue is a fire hazard the first time you light the gas logs.
Pricing for Gas Fireplace Repair in Boerne, TX
A gas fireplace repair in Boerne generally runs $185 to $650 for the most common issues. Here’s what we see in this market:
- Thermopile or thermocouple replacement: $185 – $285
- Gas valve replacement: $295 – $475
- Burner cleaning and adjustment: $185 – $240
- Damper repair or replacement: $225 – $550
- Chimney crown sealing: $275 – $450
- Flue liner inspection with camera: $149 – $225
- Full flue relining with a DuraFlex system: $1,800 – $3,200 depending on flue height and accessibility
The two biggest cost drivers in Boerne are flue condition and roof accessibility. Homes on acreage with steep rooflines or tall chimneys take longer to work on safely. Historic limestone homes often need liner and crown work before the gas unit itself is touched. We give you a written price before any work starts, and that price includes the inspection. Call (903) 515-5079 for a free estimate. You’ll talk to a person, and you’ll see the camera footage before you spend a dollar on repairs.
See the difference
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After
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After
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AfterTrusted Brands We Service in Boerne
We work with professional trade materials, not box-store substitutes. When we reline a flue in a Boerne home, we install DuraFlex liner systems because they’re specified by chimney professionals for gas exhaust conditions. We resurface fireboxes with HeatShield when the refractory panels are cracked, and we service and install gas units built around Olympia Chimney components. Because we stock these professional-grade materials and parts for the Boerne market, we’re not waiting on a special order to finish your repair. If the part exists in our inventory, it goes on the truck the same day.
We Also Serve Cities Near Boerne
While our crews work across Boerne and the surrounding Hill Country, we also serve San Antonio, Schertz, Converse, and Cibolo. The same Threshold Standard applies everywhere we go: background-checked and identity-verified technicians, a written price before work begins, and a live person answering the phone at (903) 515-5079 no matter when you call.
Serving Boerne, TX - Our Local Coverage Area
We’re based in the Boerne 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 Boerne
Because most Boerne gas fireplaces are conversions from original wood-burning masonry hearths, and the original clay flue liners were never designed for gas exhaust. Even sporadic use sends hot, acidic exhaust against clay liner that’s already decades old, and spalling happens whether you burn once a month or once a year. A cracked liner leaks exhaust into wall cavities even on a fireplace that’s rarely lit. We inspect the liner on every gas fireplace repair in Boerne, and we show you the camera footage before recommending any reline work. Call (903) 515-5079 to schedule an inspection; estimates are free.
Sometimes, but it has to be evaluated on site. In Boerne’s 1800s limestone homes, the original damper often predates gas conversion by a century. If it opens and closes freely and seals well enough to vent gas exhaust, it may be serviceable. If it’s rusted shut or rusted open, it creates a carbon monoxide risk or an energy leak that costs you money all winter. We recommend a gas-rated top-sealing damper for most converted fireplaces in Boerne’s historic district. The camera inspection will tell us what you’re working with, and you’ll see it for yourself. Call (903) 515-5079 for a free estimate.
Ringtail cats and squirrels are the big two in Boerne, especially on older limestone homes along Main Street and near Cibolo Creek where mature trees overhang the roofline. They nest in uncapped flues, and the first time you light the gas logs, you’re burning dry nesting material inside a confined space. That’s a chimney fire waiting to happen. We remove the nest, install a proper chimney cap, and verify the flue is clear before the fireplace goes back into service. If you smell anything animal-related near your fireplace, call (903) 515-5079 and a live person will get you scheduled.
Boerne gets more overnight freezes than San Antonio because of the Hill Country elevation, and those freezes happen more consistently across winter. Water seeps into hairline cracks in chimney crowns, freezes, and expands, widening the cracks each cycle. Spring thunderstorms then drive water through the damaged crown and onto the gas firebox controls, causing intermittent ignition failures. In San Antonio’s warmer urban core, this cycle is less severe. In Boerne, it’s a primary cause of gas fireplace issues we repair every spring. A sealed crown and a chimney cap prevent most of it. Call (903) 515-5079 to get yours checked.
Because the problems that disable a gas fireplace in Boerne happen whether or not you burn it. Clay flue liners spall from gas exhaust and age. Dampers rust from condensation. Crowns crack from freeze-thaw cycles. Animals move into uncapped flues. None of these things care how often you light the fireplace. An annual inspection catches them before they become a $2,000 reline or a carbon monoxide risk. Our inspection includes a camera check of the flue, a gas pressure test, and a visual check of the burners, logs, and controls. Would you rather spend $225 on an inspection or $2,400 on a reline in January? Call (903) 515-5079 to schedule yours.
Call Alcott Chimney San Antonio for Gas Fireplace Repair in Boerne
If your gas fireplace in Boerne is acting up, call (903) 515-5079. You’ll get a live person on the line, a free estimate, and a technician whose name and photo you’ll see before anyone knocks on your door. Ruben Castellano built this company on the idea that you deserve certainty: a written price before work starts, a written guarantee on every repair, and proof of what’s wrong before you pay to fix it. That’s the standard we bring to every Boerne home, from Main Street to Scenic Loop Road.
Written by Ruben Castellano, Owner at Alcott Chimney San Antonio, serving Boerne since 2002.