Gelco Flue Liner Replacement in Orlando, FL

Gelco Flue Liner Replacement: The Orlando Owner’s Guide

Gelco flue liner replacement in Orlando typically runs $1,800-$3,400 installed, depending on liner diameter, chimney height, and whether the chase needs reframing. We stock Gelco-compatible stainless steel liners in 5.5-inch through 8-inch diameters and complete most replacements in a single visit. A live person answers our phone at (877) 565-7563 every hour of every day, and we’ll give you an exact price before any work begins.

Call (877) 565-7563

Most Orlando homeowners discover their Gelco liner is failing during a routine sweep or when they notice water stains on the ceiling near the chimney after one of our summer downpours. The liner has been doing quiet, invisible work for fifteen or twenty years, and then it doesn’t. Roy Dempsey has seen this progression across thousands of Central Florida chimneys - the clay tiles crack from thermal cycling, the stainless liner corrodes at the collar where condensation pools, or the connection to the appliance thins from sulfur exposure. The house usually tells you before the liner fails completely, if you know what to listen for.

Which Gelco Models This Applies To

Gelco manufactured several liner series over the decades, and the part you need depends on when your system was installed and what fuel it serves. The Gelco Ultrapro stainless steel flexible liners, common in Orlando homes from the late 1990s through the mid-2010s, used a distinct corrugated pattern with a .006-inch wall thickness for wood-burning applications and a heavier .012-inch for oil and gas. The Gelco Pro series that preceded it had a smoother interlock and different collar geometry at the top plate. We carry adapters for both.

To identify your liner, check the metal tag at the top termination if accessible, or measure the inner diameter at the thimble where the liner connects to your appliance. Do not trust the outer dimension - the insulation wrap adds roughly half an inch. The critical compatibility gotcha in Orlando’s market: Gelco used two different top-plate bolt patterns, and the wrong replacement will not seat properly, creating a gap that leaks combustion gases into the chase. We verify this with a Level-2 camera inspection before ordering parts.

Hearthstone Chimney Co. of Orlando is an independent service provider, not affiliated with Gelco. We source OEM Gelco components when available and match them with quality aftermarket equivalents from DuraFlex and Olympia Chimney when the original part is discontinued. The aftermarket liners we use meet the same UL 1777 listing standards. In most cases, the aftermarket option saves $200-$400 without sacrificing service life.

Signs Your Gelco Flue Liner Replacement Is Failing

• White efflorescence or rust staining on the exterior brick. This means moisture is getting past the liner somewhere in the run. In Orlando’s humidity, a compromised liner accelerates deterioration fast - we’ve seen chase walls rot through in two seasons when the liner collar was leaking condensation.
• Bits of clay tile or metal flakes in the firebox or cleanout. For original clay-lined chimneys retrofitted with a Gelco insert, this means the old tiles are collapsing onto the new liner, or the liner itself is fatiguing. The debris restricts draft and can block the flue entirely.
• Smoke or carbon smell in upstairs rooms when the fireplace is in use. This indicates a breach in the liner allowing combustion gases into the chase cavity. It is not a weather-sealing issue; it is a combustion-safety issue, and the system should not be used until inspected.
• Water dripping into the firebox during or after rain. Orlando’s afternoon thunderstorms test every top plate and storm collar. A Gelco liner with a corroded top termination or failed storm collar will channel water directly down the flue. The liner may be structurally sound but improperly sealed, or the liner itself may have split at a stress point.
• Draft problems that worsen on humid days. A liner with interior creosote buildup or structural deformation loses capacity. Orlando’s summer air is heavy; a marginally sized or partially obstructed Gelco liner that worked in January will backdraft in August. We measure actual draft pressure during inspection to separate liner issues from external factors.

Replacement Cost & What’s Included

What drives the range: chimney height above roofline, liner diameter, accessibility (steep roofs in College Park and Winter Park add time), and whether the existing top plate is reusable. We do not quote by phone and then surprise you on site. Our technician photographs the full run, gives you a plain-English verdict, and the number on the estimate is the number on the invoice. Every liner replacement carries our 90-Day Done Right Promise - in writing, no arguing. A clean chimney is not a luxury - it is just the job done right.

DIY or Call Us?

There is honest work a homeowner can do: verify the liner diameter with a tape measure, check the cleanout for debris, and confirm the damper opens fully. These checks help us understand what we’re walking into when you call.

What you should not attempt: pulling a liner through a chase, working on the roof near a steep pitch, or disconnecting a gas appliance from the liner collar. A Gelco liner replacement requires proper sizing calculations for BTU load, correct insulation wrap to maintain UL listing, and pressure testing after installation. The stainless steel is sharp, the chase is often tight, and a misaligned top plate creates a carbon monoxide pathway into your home. We’ve rescued three DIY attempts in Orlando this year alone, and in two cases the homeowner had damaged the new liner during installation.

Our trucks carry Gelco-compatible liners in common diameters, and most replacements are completed in four to six hours. Call (877) 565-7563 - a live person will answer, and we’ll schedule an inspection at your convenience.

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