Level 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 Marietta
Gas fireplace repair in Marietta typically runs $185 – $520 depending on what’s actually wrong, and most diagnostic visits happen within 2 – 4 business days. We’re Marietta’s local gas fireplace repair team, and we’ve spent years working inside the Lockheed-era brick ranches that define this city’s housing stock. The problem we see most often isn’t the gas log set itself. It’s the 60-year-old chimney it’s venting into. Call (336) 863-3889 and we’ll send a background-checked, identity-verified technician to your door with a written price before any work begins.
Why Alcott Chimney Sweep Is Marietta’s Preferred Gas Fireplace Repair Company
Our Gas Fireplace Repair team has worked in Marietta long enough to know the difference between a Fair Oaks ranch from 1968 and a Whitlock Avenue bungalow from 1924. That matters because the repair approach is different. Older homes near Marietta Square often have unlined chimneys that were never designed for gas appliances. Mid-century subdivisions off Powder Springs Street and Roswell Road have clay tile liners that have been soaking up wood-smoke creosote for five decades, then got gas logs dropped into them without anyone checking whether the flue still drafts.
Ruben Castellano leads our Marietta crew, and every technician who arrives at your door is background-checked, identity-verified, and announced to you by name and photo before the truck pulls up. That’s the Threshold Standard. You’ll know exactly who’s coming before they ring the bell. We’ve built our reputation in Cobb County on that promise, and on a written guarantee for every repair we complete. If the repair fails within 365 days, the second visit is free. That’s the 365-Day Done Right Promise, and it’s included on every job, not sold as an add-on.
Our Gas Fireplace Repair Services in Marietta
Gas Log Set and Vented Appliance Inspection
The most important check we perform in Marietta homes is whether the existing flue can actually handle what the gas log set is asking it to do. Most vented gas logs in Marietta were installed into fireboxes built for wood burning, with flues sized for a completely different draft profile. We inspect the entire venting path from the firebox up through the chimney crown, checking for obstruction, liner damage, and moisture intrusion. Homes in the Lockheed-era ranch neighborhoods off Dallas Highway and Austell Road are the ones we see with the most mismatched setups. A gas log set can run for years while quietly spilling exhaust into the room because the flue was never right for it.

Flue Liner Assessment and HeatShield Resurfacing for Gas Appliance Venting
Marietta’s ranch-era chimneys were built with clay tile liners that have now seen six decades of Georgia humidity and irregular burn cycles. When those liners crack, gas combustion moisture seeps into the masonry and accelerates deterioration from the inside out. We assess the liner condition with a camera inspection, and we show you the footage. If the liner is damaged, we resurface with HeatShield rather than tearing out your chimney chase. For homes converting from wood to gas, we also evaluate whether a properly sized stainless liner from Olympia Chimney or DuraFlex makes more sense than trying to reuse a deteriorating clay tile flue.

Firebox and Damper Repair for Gas Insert Conversions
Converting a wood-burning fireplace to a gas insert in Marietta is more than swapping the logs. The firebox brick in a 1960s ranch has spent decades absorbing thermal shock from wood fires, and the mortar joints are often spalled or crumbling. Gas combustion produces a different kind of moisture than wood smoke, and it can wick into damaged firebox brick and spread deterioration into the surrounding chase. We repair fireboxes with professional-grade materials from Famco and Copperfield, reset dampers to work with the new appliance, and make sure the conversion vents correctly before the first burn.

Chimney Sweeping Before Gas Conversion
Here’s what surprises a lot of Marietta homeowners: the biggest hidden cost of converting to gas logs is the creosote nobody ever removed from the wood-burning years. Glazed third-degree creosote doesn’t just disappear when you switch fuels. It sits in the flue, restricting the draft your new gas logs need, and it remains a fire hazard even if you never burn wood again. We sweep and inspect the entire system before any gas appliance is installed or serviced, so you’re not paying for a gas log set that can’t breathe.

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 Marietta
We work on every major gas fireplace brand found in Marietta homes, and we stock common replacement parts locally so turnaround is measured in days, not weeks. Our technicians are trained on Olympia Chimney liner systems, DuraFlex stainless components, HeatShield resurfacing materials, and Famco and Copperfield firebox and damper products. These are the brands chimney professionals specify, not box-store substitutes. When we repair a gas fireplace in Marietta, we use materials built for the way this city’s chimneys actually behave.
Common Gas Fireplace Repair Problems We See in Marietta Homes
- Undersized flues on gas log conversions. Marietta’s ranch-era masonry chimneys were built without dedicated flue liners for gas appliances. When a vented gas log set goes into an original wood-burning firebox, the flue is frequently too large or too small for the new appliance’s draft requirements. The result is stalled draft, exhaust spillage, and condensation that eats firebox mortar.
- Leftover creosote behind new gas logs. In the Lockheed-era ranch subdivisions off Powder Springs Street, our tech pulled a set of vented gas logs from a 1962 brick ranch and found the original clay tile liner coated in third-degree creosote from years of smoldering wood burns. The new gas logs had been drafting into a flue that was already half-blocked. We swept the liner, repacked the smoke chamber, and reset the damper before reinstalling the log set, and the draft pulled clean the same afternoon.
- Crumbling firebox mortar from gas combustion moisture. Gas fires produce water vapor as a combustion byproduct, and that moisture behaves differently than wood smoke. In aging single-wythe masonry fireboxes, it wicks into hairline cracks and accelerates erosion. We see this constantly in 1950s – 1970s ranches throughout Marietta, especially near Kennesaw Mountain where summer humidity is intense and afternoon thunderstorms funnel off the ridge, soaking exposed chimney stacks.
- Chimney swifts blocking inspection and repair. From roughly May through September, chimney swifts nest inside open masonry chimneys across Marietta. These birds are fully protected under the federal Migratory Bird Treaty Act, which means it’s illegal to clean, cap, or disturb an occupied chimney. If you call us for gas fireplace repair during nesting season and we find swifts, the repair has to wait until they leave. We explain this clearly because a lot of Marietta homeowners don’t know the law exists until a technician shows up.
Pricing for Gas Fireplace Repair in Marietta, GA
Here are real numbers for the Marietta market. A diagnostic service call for gas fireplace repair in Marietta runs $95 – $185, and that fee is credited toward any repair you approve. Gas log set inspection and cleaning typically runs $150 – $275. Firebox mortar repair starts around $300 – $650 depending on the extent of spalling. A stainless flue liner installation for a gas conversion runs $1,800 – $3,400 depending on chimney height and liner diameter. HeatShield resurfacing for a damaged clay tile liner usually falls between $1,100 – $2,800. Every job receives a written price before work begins, and every repair carries our 365-Day Done Right Promise. Call (336) 863-3889 for a free estimate on gas fireplace repair in Marietta.
We Also Serve Cities Near Marietta
Our Gas Fireplace Repair in Marietta service area includes Smyrna, Kennesaw, Powder Springs, and Atlanta. If you’re in one of those communities and dealing with a gas fireplace issue, the same background-checked crew and the same written guarantee apply. Dispatch and scheduling are coordinated from our Atlanta office, and crews serve Marietta locally every week.
Serving Marietta, GA - Our Local Coverage Area
We’re based in the Marietta 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 Marietta
Sometimes, but not before a flue assessment. Marietta’s ranch-era chimneys were built for wood burning, with flue dimensions that don’t always match what a vented gas log set needs. If the flue is too large, the draft stalls and exhaust spills back into the room. If it’s too small or partially blocked with old creosote, the appliance can’t vent at all. We camera-inspect the entire flue and show you the footage before recommending a conversion. Call (336) 863-3889 and we’ll tell you honestly whether your Marietta fireplace is a good candidate for gas logs.
You’re almost certainly burning off old wood-smoke creosote that was left in the flue from years of firewood use. Gas logs don’t produce that smell on their own. The odor means your flue hasn’t been swept since the wood-burning days, or there’s a draft problem pulling exhaust back into the room. We see this in Marietta ranch homes constantly, especially where gas logs were installed without a chimney sweep beforehand. The fix starts with a sweep and a camera inspection. Give us a call at (336) 863-3889 and we’ll walk you through what’s happening.
Yes. Chimney swifts nest in open masonry chimneys across Marietta from roughly May through September, and they’re fully protected under the federal Migratory Bird Treaty Act. If we find an active nest during a gas fireplace repair visit, we legally cannot proceed until the birds leave on their own. That’s why we recommend scheduling gas fireplace conversions and liner work in the fall and winter months. Call (336) 863-3889 if you need us to check whether your Marietta chimney is occupied before you plan a repair.
Once a year, every year, even if you only burn a handful of fires per season. Marietta’s climate means most people fire up the gas logs only during short cold snaps, which produces intermittent use patterns that can hide developing problems. A yearly inspection catches firebox erosion, damper issues, and liner damage before they become expensive repairs. It also keeps your 365-Day Done Right Promise from lapsing on any previous work we’ve done. Call (336) 863-3889 to schedule an annual gas fireplace inspection in Marietta.
It’s usually a repair, not a replacement. Crumbling firebox mortar in Marietta’s older brick ranches is typically caused by years of thermal cycling plus gas combustion moisture wicking into weakened joints. We tuckpoint the firebox with professional-grade refractory mortar from Famco or Copperfield, which restores the firebox’s integrity without tearing out your chimney. In severe cases where the brick itself has spalled beyond repair, we’ll tell you straight and quote you a firebox rebuild. Either way, you’ll get a written price before any work starts. Call (336) 863-3889 for a free firebox assessment in Marietta.
Written by Ruben Castellano, Owner at Alcott Chimney Sweep, serving Marietta since 2002.
Ready to get your gas fireplace working right? Call (336) 863-3889 today. A live person answers, day or night, and you’ll get a written estimate before any work begins.





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