Masonry repair
Sweep & inspection
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 Mount Dora
Gas fireplace repair in Mount Dora typically runs $185 to $390 for most common fixes like thermocouple replacement, pilot assembly service, or damper repair, and most jobs are completed the same day we arrive. If you live in a 1920s bungalow near Donnelly Street or a lakefront cottage off Lakeshore Drive, your gas fireplace likely vents through a chimney that was never designed for modern gas appliances. That’s the core of what we solve here. Call (904) 822-8172 and a live person answers, 24/7.
Mount Dora’s older housing stock means gas fireplace work here rarely looks like a simple service call. We regularly open up fireplaces in the historic district and find unlined flues, rusted dampers, and brick that’s been shedding mortar for decades. Our Gas Fireplace Repair team knows what these older Mount Dora chimneys look like inside, and we’ll show you photos of everything before recommending any work.
Why Hadley Chimney Orlando Is Mount Dora’s Preferred Gas Fireplace Repair Company
Hadley Chimney Sweep, founded in 2003, brings over two decades of chimney and gas fireplace experience to every Mount Dora job. Cory Mitchell and our technicians understand what happens when a 1925 cottage chimney sits through fifty Florida summers of humidity and afternoon thunderstorms. Spalling brick. Rusted steel. Dampers that won’t seat. These aren’t textbook problems, they’re Mount Dora problems, and we’ve fixed hundreds of them.
When you book with us, you get a written price before any work begins. Not an estimate scribbled on a clipboard. A line-item price you approve first. Then we arrive in a tracked window, uniformed and background-checked, so you know exactly who’s pulling up and when. After the repair, you get before-and-after photos and a digital invoice you can pay from your phone. That’s The Relay Visibility Guarantee, and it applies to every gas fireplace repair in Mount Dora we perform.
Every repair carries our 365-Day Done Right Promise in writing. If a repair fails within a year, we come back and make it right at no charge. That’s a free second visit, no fine print. It’s part of being in the Relay Home Co. family, where we’re held to The Relay Standard on every job from a thermocouple swap to a full flue relining.
Styles & brands we work with




Our Gas Fireplace Repair Services in Mount Dora
Chimney Cap Installation
A missing or rusted chimney cap on a Mount Dora home lets rain, leaves, and curious animals straight into your gas fireplace flue. That moisture drips onto your pilot assembly and corrodes everything it touches. We install Copperfield and Famco caps sized to your flue, and we’ll show you a photo of the old cap next to the new one so you can see exactly what changed.

Damper Repair
In Mount Dora, rusted-out dampers are the single most common cause of gas fireplace backdrafting we see. High humidity and decades of condensation eat through the steel. When a damper won’t fully close or is stuck half-open, exhaust gases and moisture back down into your living room. A new Famco damper, properly fitted, restores draft and eliminates the carbon monoxide risk. Never try to force a stuck damper yourself. If it’s seized or crumbling, call a trained technician.

Flue Liner Installation
This is the Mount Dora-specific repair most home service companies miss entirely. Many historic bungalows and lakefront cottages here were built without clay flue liners. Modern gas appliances vent moisture-rich exhaust that deteriorates old mortar and brick fast. We reline those unlined flues with HeatShield, a ceramic compound applied from inside, or DuraFlex flexible stainless steel when the flue needs structural reinforcement. Both are built to handle gas exhaust safely for decades. We’ll camera the flue first so you watch the same footage we watch.

Pilot Light and Thermocouple Service
Pilot lights that won’t stay lit in Mount Dora are usually one of three things: a corroded thermocouple from ambient humidity, a blocked vent from a missing cap, or low gas pressure at the valve. We diagnose all three on site, show you the failed part, and give you a flat price to replace it before any work begins. No guessing. No “we’ll have to order it and come back” unless you see the part yourself and approve the wait.

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 Mount Dora
We work with the materials chimney professionals actually trust, including DuraFlex flexible liner systems, HeatShield ceramic repair compound, and Famco dampers. When you need a chimney cap, we size it from Copperfield and Olympia Chimney options rather than whatever’s rolling around the back of a truck. That matters in Mount Dora, where historic homes need repairs that match the house, not a one-size-fits-all part. We stock common gas fireplace repair parts for Mount Dora jobs, so most repairs finish in a single visit.
Common Gas Fireplace Repair Problems We See in Mount Dora Homes
- Rusted-out dampers from decades of high humidity. Mount Dora’s climate accelerates steel corrosion inside chimneys. A damper that won’t close properly sends gas exhaust and humidity back into the firebox, causing pilot outages and, in worse cases, carbon monoxide backdrafting.
- Spalling brick in unlined chimneys. Many homes on Tremain Street and around the historic district have original soft brick flues with no clay liner. Moisture gets trapped in the bricks, freezes and expands during rare cold snaps, and the face of the brick pops off. That spalled material falls behind the firebox and blocks gas exhaust.
- Missing or deteriorated chimney caps. Lakefront cottages near Lake Dora take wind and rain off the water. A rusted cap lets water pour down the flue, extinguishing pilots and accelerating rust on every gas appliance component below.
- Pilot lights that won’t stay lit. The combination of humidity, rust particles falling from deteriorated flues, and occasional spider webs in unlit pilot tubes means Mount Dora gas fireplaces need seasonal pilot service before the fall cool snaps arrive.
See the difference
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After
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AfterPricing for Gas Fireplace Repair in Mount Dora, FL
In Mount Dora, a standard gas fireplace service call with a diagnostic runs $85 to $125, applied toward your repair if you approve it. Pilot assembly and thermocouple replacement typically costs $185 to $275. Damper replacement, including removal of the rusted damper and installation of a new Famco damper, lands between $240 and $390. Flue relining with HeatShield starts around $1,500 for a single-story historic home and goes up from there if we need DuraFlex stainless steel. Chimney cap installation with the cap included costs $250 to $420 depending on flue size and roof access.
Lakefront properties with difficult roof pitches or chimneys on the upper slope may see labor slightly higher. We’ll give you a written price before any work starts, and that price doesn’t change once we’re on the roof. Call (904) 822-8172 for a free estimate on your specific gas fireplace.
We Also Serve Cities Near Mount Dora
Besides Mount Dora, our technicians cover Minneola, Lake Mary, Clermont, and Altamonte Springs. If you’re just over the Orange County line or down in south Lake County, we’ll drive out to you with the same tracked arrival window and written-price-first process. Scheduling is coordinated from our South Florida office, and crews serve Mount Dora and the surrounding area locally.
Serving Mount Dora, FL - Our Local Coverage Area
We’re based in the Mount Dora 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 Mount Dora
Because your chimney is cold and damp, not blocked. When Mount Dora temperatures drop suddenly after months of heat and humidity, the unlined or deteriorated flue can’t establish draft fast enough. The warm gas exhaust hits cold, moisture-laden brick and spills back into the room. We see this every year in the historic district, especially on bungalows where flues were built without clay liners. A flue relining or damper replacement usually solves it. Call (904) 822-8172 and we’ll camera the flue to confirm.
Yes, but not safely without relining first. Many 1920s Mount Dora bungalows and lakefront cottages have unlined brick flues that were never designed for gas exhaust. Gas produces moisture-rich exhaust that accelerates brick deterioration and can leak carbon monoxide through cracked mortar. We reline those flues with HeatShield or install DuraFlex stainless steel liners before the insert goes in. It’s the difference between safe operation and a slow-developing problem you can’t see.
Rainwater enters through uncapped flues, washes soot and broken mortar down onto the pilot assembly, and sits there in the summer heat and humidity. That’s how thermocouples corrode and pilots fail in July even though nobody used the fireplace for months. Installing a proper Copperfield or Olympia chimney cap prevents most of this. If your gas fireplace has been silent all summer, we recommend an inspection in early fall to catch what the storms left behind.
On lakefront cottages in Mount Dora, the most common culprits are a rusted damper, a missing chimney cap, or a thermocouple corroded by moisture off Lake Dora. The pilot lights, then the draft pulls humid lake air back down the flue and cools the thermocouple until the gas valve closes. We’ll diagnose it on site, show you the failed part, and replace it for one written price. No “repace the whole unit” upselling. Just the part that’s actually broken.
Yes, but not for the reason most people think. The risk in Mount Dora isn’t creosote buildup from heavy burning, it’s moisture damage and animal intrusion during the months the fireplace sits unused. Spiders, wasps, and occasionally a bird nesting in an uncapped flue will block gas exhaust. Spalled brick from humidity will clog the smoke shelf. A camera inspection takes about an hour and shows you the inside of your flue on video. Call (904) 822-8172 to schedule one before burning season.
What Mount Dora Homeowners Should Know About Gas Fireplace Repair
On a lakefront cottage off Lakeshore Drive, we found a gas fireplace draft problem caused by a rusted-out damper and spalling brick in an unlined flue. Our tech removed the old damper, installed a new Famco damper, and lined the flue with HeatShield to restore proper draft and stop carbon monoxide backdrafting. Now the owner can enjoy occasional cool-snap fires without smoke or safety concerns. That’s not an unusual repair for Mount Dora. It’s the job we do most often here.
Here’s the thing about gas fireplaces in Mount Dora that most technicians from newer suburbs don’t understand. The homes here are different. A 1928 wood-frame bungalow on Fifth Avenue doesn’t have the same chimney as a 2004 stucco house in Clermont. The flues are unlined. The dampers are rusted. The mortar joints between original soft bricks are crumbling from eighty years of Florida humidity and afternoon rain. When you call a company that mostly services new construction, they look at that and recommend a full chimney rebuild you don’t need. We look at it and reline the flue, replace the damper, and seal the crown. Then we show you photos of what was there and what we changed. That’s the difference.
Here’s what happens when you book a gas fireplace repair with us in Mount Dora. You call, a live person answers, and you get a specific arrival window. Not a four-hour guess. You’ll see your technician’s live location on the day of service. When we arrive, we inspect the fireplace, camera the flue if needed, and give you a written price before any repair begins. You approve it. We do the work. You get before-and-after photos and a digital invoice. The whole job is documented and guaranteed for 365 days in writing. If something fails, we come back free.
If your gas fireplace in Mount Dora is acting up, don’t wait until the first cold snap when every fireplace company in Lake County is booked solid. Call (904) 822-8172 today for a free estimate. We’ll answer, listen to what’s happening, and get you on the schedule. Written price first, photos after, and a live person every time you call.
Written by Cory Mitchell, Owner at Hadley Chimney Orlando, serving Mount Dora since 2003.