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 Mount Dora
Gas fireplace repair in Mount Dora usually runs between $185 and $480 for most service calls, with full liner replacements on older homes landing in the $2,200 to $4,800 range depending on flue height and material condition. Most repairs on gas log sets, thermocouples, pilot assemblies, and gaskets are completed in a single visit, and Alcott Chimney Sweep offers written pricing before any work begins. If you live near Donnelly Street, the Lakeside Inn, or anywhere in Mount Dora’s historic district, call (336) 863-3889 and a live person answers, day or night.
We know Mount Dora’s homes because we work on them constantly. Original 1910s – 1940s masonry chimneys along streets like Clayton and Baker behave very differently from the 1970s zero-clearance prefab units out near Country Club Boulevard. Both need gas fireplace repair, but the underlying problems are not the same, and neither should be diagnosed by a technician who doesn’t understand the difference.
Why Alcott Chimney Sweep Is Mount Dora’s Preferred Gas Fireplace Repair Company
Ruben Castellano built Alcott Chimney Sweep in 2002 around a straightforward idea: homeowners deserve to know exactly who is walking up their driveway and exactly how much the job will cost before the tools come out. In Mount Dora, where many of our customers are older homeowners, parents with young kids, or people home alone during the day, that matters more than most companies admit.
Every Alcott technician passes a background check and identity verification before ever setting foot on your property. This is the Threshold Standard, not an optional add-on. We send you the technician’s name and photo before the appointment, and when they arrive, they show a photo ID badge at the door. Every time. No exceptions. You’ll know who’s coming, and you’ll recognize them when you open the door.
We’ve been asked more than once why a chimney company spends so much effort on this. The answer is simple. We serve a town where opening the door to a stranger is a genuine concern. Mount Dora’s historic district is full of single-story bungalows where a homeowner might be alone all afternoon. A background-checked, announced technician isn’t a luxury. It’s the baseline.
Dispatch and scheduling for our Mount Dora crews are coordinated from our South Florida office in Miami, but the technicians who arrive at your home are local to Lake County and know Mount Dora’s streets and housing stock.
Our Gas Fireplace Repair Services in Mount Dora
Gas Fireplace and Gas Log Set Repair
Most gas fireplace calls in Mount Dora start with one of three complaints: the pilot won’t stay lit, the main burner produces a weak yellow flame, or there’s a persistent odor like tar or kerosene when the unit first fires up in winter. All three point to component wear. Thermocouples fail. Orifices clog. Gaskets on aging prefab inserts dry out and let combustion gases leak where they shouldn’t.
We service and install gas log sets, gas inserts, and zero-clearance gas fireplaces using professional trade brands including Copperfield and Famco. These are not box-store substitutes. They’re the same components chimney professionals specify, and they’re built to hold up through Mount Dora’s humid summers and rare winter burning cycles.

Level 2 Chimney Inspection with Flue Liner Evaluation
A Level 2 inspection is a camera evaluation of the entire flue interior. In Mount Dora, we run these on nearly every home built before 1950 because the original clay-tile liners have had 70 to 120 years to crack, spall, and separate at the mortar joints. You can’t see that from the firebox. The camera sees it plainly.
If we find cracks or gaps, you get photographs. Real photographs, taken inside your chimney. Nothing gets recommended based on verbal description or a hunch. You’ll see the condition of your flue with your own eyes before we suggest any repair.

Chimney Cap and Crown Repair
Mount Dora sits at roughly 184 feet above sea level, among the highest points in Florida. That elevation, combined with the town’s exposure to wind-driven rain off Lakes Dora and Gertrude, means chimney crowns take a beating. A cracked crown lets water into the flue, which accelerates liner deterioration and can eventually seep into your firebox and brick veneer.
We repair crowns, replace rusted rain caps, and install new caps sized for gas appliances. Proper cap installation on a gas fireplace matters for draft as much as water protection. A cap with the wrong mesh, or one sized for a wood flue, can trap enough moisture to corrode a gas log set within a few seasons.

Chimney Swift Season Compliance
This is a genuinely local constraint. Chimney swifts, federally protected under the Migratory Bird Treaty Act, colonize Mount Dora’s dormant historic chimneys from roughly May through October. Once nesting begins, no cleaning, cap installation, or repair work can legally proceed on an active nest.
If you’re planning gas fireplace repair on a masonry chimney in the historic district, schedule work before May or after the swifts leave in fall. We’ll help you time the appointment correctly. Waiting until after fall departure is fine for most repairs, but understand that firebox corrosion and liner damage don’t pause during the swift season.

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 stock parts and install systems from Copperfield, Famco, and Olympia Chimney, with DuraFlex components used on liner repairs and replacements. This means faster turnaround for Mount Dora customers. We’re not ordering parts from a warehouse and rescheduling for next week. Common gaskets, thermocouples, pilot assemblies, and damper components are on the truck. If we need something unusual, our supplier network in Lake County gets it to us within a day or two in most cases.
Common Gas Fireplace Repair Problems We See in Mount Dora Homes
- Dormant masonry chimneys with cracked clay-tile liners. On 1910s – 1940s bungalows around Lakeshore Drive and the historic core, chimneys sit unused most of the year. Persistent humidity off Lake Dora and Lake Gertrude causes efflorescence and spalling that cracks the flue liner. Gas exhaust seeps into the smoke chamber instead of venting upward, and the fireplace smells musty or smoky even before you light it.
- Backdrafting prefab zero-clearance fireplaces in 1960s – 1980s ranch homes. Homes off the historic core, particularly along Sullivan Road heading south toward Fruitland Park, were often built with decorative prefab fireplaces. The metal fireboxes and gaskets on those units are now 40 to 60 years old. When the gaskets fail, gas log sets backdraft and smoke rolls into the room instead of up the flue.
- Soot staining on the chimney crown. This is an early sign of incomplete gas combustion or a partially blocked flue. We see it regularly on Mount Dora homes where the gas logs were installed years ago and never serviced. The crown staining isn’t a cosmetic problem. It means the byproducts of combustion are not leaving the chimney cleanly.
- Creosote buildup in dual-fuel masonry fireplaces. Many Mount Dora homeowners burn wood in the same fireplace where gas logs are installed. If the previous owner burned pine or unseasoned wood, the flue may be lined with glazed creosote even if the current owner uses gas exclusively. That creosote is a chimney fire risk and must be addressed before gas logs run safely.
Pricing for Gas Fireplace Repair in Mount Dora, FL
Basic service calls in Mount Dora, which include diagnosing the problem and making a straightforward repair like replacing a thermocouple or cleaning a pilot orifice, typically run $185 to $320. Gas log set repair or burner replacement usually falls between $275 and $480 depending on parts. Full flue liner replacement on an older masonry chimney ranges from $2,200 to $4,800 based on flue height, liner diameter, and whether we use HeatShield resurfacing or a DuraFlex liner system.
Every job includes a written price before work starts. That’s not conditional and it’s not negotiable. You’ll know the number before we touch a wrench. Every repair carries a written guarantee, and if that repair fails within the coverage period, the second visit is free. We also back every completed job with our 365-Day Done Right Promise: a full year of accountability. If it’s not right, we make it right.
Call (336) 863-3889 for a free estimate. A live person answers, and we’ll walk you through what to expect before the technician even arrives.
We Also Serve Cities Near Mount Dora
Our Gas Fireplace Repair team covers Mount Dora and the surrounding Lake County communities including Eustis, Tavares, Leesburg, and Fruitland Park. If you’re just outside Mount Dora and wondering whether we make the drive, call us. The answer is almost always yes, and the trip charge is disclosed before you commit to anything.
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
The tar or kerosene smell on startup is almost always creosote residue left by previous wood fires, not your gas logs themselves. Mount Dora homes with masonry chimneys often have a history of wood burning, and creosote is the tar-like buildup that coats the flue. When the gas fire heats the chimney, that old creosote warms up and off-gasses. The fix is a proper cleaning and flue inspection before gas season. If the smell persists after cleaning, you likely have a draft problem or a failing damper. Call (336) 863-3889 and we’ll diagnose it in one visit.
We cannot work on a chimney with an active chimney swift nest, and that’s not our rule. Chimney swifts are federally protected under the Migratory Bird Treaty Act, and nesting season in Mount Dora runs from roughly May through October. If a nest is present, we legally must wait until the birds leave in fall. We recommend scheduling gas fireplace repair before May or after the swifts depart in October. Waiting is fine, but be aware that existing damage worsens during the dormant months. Call us in late September to get on the fall schedule early.
Yes, and arguably you need one more than the homeowner who burns weekly. Chimneys that sit dormant in Mount Dora’s humid lake climate develop moisture problems that active chimneys dry out naturally. Clay-tile liners crack, mortar joints spall, and humidity off Lake Dora keeps the interior damp for months. A cracked liner in a dormant chimney is still a safety hazard when you do light the gas logs, and it’s also a carbon monoxide pathway into the wall cavities. A Level 2 camera inspection tells you in thirty minutes whether your flue is safe. Call (336) 863-3889 for a free estimate.
Backdrafting in older prefab units usually means failed gaskets, a corroded firebox joint, or a blocked termination cap. Ranch homes built around Mount Dora in the 1960s – 1980s commonly have zero-clearance fireplaces whose metal components are now end-of-life. When the gaskets around the glass or door seal fail, the unit can’t maintain proper combustion air flow, and smoke spills into the room. This is repairable in most cases. We carry Famco and Copperfield replacement gaskets and can service most prefab brands. The repair is quick, and the difference in air quality is immediate. Call (336) 863-3889.
If you heat primarily with a wood stove in the rural areas around Mount Dora, sweep the flue every 30 to 50 burns, or roughly every six to eight weeks during heavy use. Creosote accumulates far faster on rural properties where stoves run daily, and the shorter interval is what keeps your flue safe. We see far heavier creosote loading on working wood stoves in Lake County than on decorative fireplaces in town, and it requires more than one annual cleaning. If you notice a slow draft, dark smoke, or a stove that burns hot but doesn’t heat the room, call (336) 863-3889 to schedule a sweep. Estimates are free.
What It’s Actually Like Working with Us in Mount Dora
We got called to a 1923 Craftsman bungalow off Donnelly Street a few seasons ago. The homeowner had lit her gas logs for the first time in years and the fire was producing a lazy, smoky draft that filled the living room. Our tech pulled the firebox apart and found a corroded aftermarket damper and a flue liner choked with third-degree creosote glaze from the previous owner’s wood fires. The gaskets on the prefab insert were failing too. We swapped them with DuraFlex components, completed a Level 2 inspection, and repaired the liner with HeatShield. After that, the draft corrected itself and the gas logs burned clean for the first time in a decade. That’s not an unusual story for Mount Dora. It’s a typical one.
If you own an older home in Mount Dora, your gas fireplace almost certainly has more going on than a dirty pilot light. The combination of dormant chimney, lake humidity, and decades of deferred maintenance creates specific failure patterns. We know what those patterns look like, and we know how to fix them properly.
Call (336) 863-3889 and talk to a real person. Tell us what you’re seeing. We’ll give you a straight answer about whether you need a repair, a cleaning, or nothing at all. Written price before work starts. Written guarantee on every repair. Technician announced by name and photo before arrival. That’s how we do it in Mount Dora.
Written by Ruben Castellano, Owner at Alcott Chimney Sweep, serving Mount Dora since 2002.





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