Famco Flue Liner Replacement Nationwide

Famco Flue Liner Replacement: The San Antonio Owner’s Guide

A Famco flue liner replacement in San Antonio typically runs $1,850 to $3,400 installed, and we stock Famco-compatible liner components on our trucks for most single-story masonry chimney setups. We can usually match your existing Famco liner model within one visit. Most homeowners discover theirs has failed during a routine sweep, when the brush catches a rusted seam or the camera inspection shows a split that wasn’t visible from above. Other times it’s a neighbor’s chimney fire story that prompts the call. Either way, you want to know three things: what failed, what it costs, and whether the new liner will actually fit the way the old one did. That’s what this page answers.

Call (903) 515-5079

Key takeaways:

• Famco liners use specific diameter and gauge combinations, and matching them correctly matters more than brand loyalty.
• Most Famco flue liners in San Antonio fail from condensation and our hard water run-off, not from fire damage.
• Installed pricing depends mostly on chimney height, roof pitch, and whether the old liner comes out cleanly.
• We’re an independent San Antonio chimney company. We install and replace Famco liners, but we’re not affiliated with Famco.

Which Famco Models This Applies To

Famco makes rigid and flexible stainless steel liners in a range of diameters, most commonly 4-inch through 8-inch for residential chimneys serving furnaces, water heaters, and wood stoves. The liner is sized to the appliance and the flue interior, not to the house style. That’s where the compatibility traps live. A 6-inch Famco flex liner is not interchangeable with a 6-inch rigid section if your chimney has offsets or a clay tile liner that’s crumbled partway down. And an 8-inch liner spec’d for a wood stove won’t necessarily handle a gas appliance without a conversion kit. When we show up in San Antonio for a Famco replacement, the first thing we do is pull the existing liner’s data plate or measure the inner diameter with a caliper, then match it against the appliance’s BTU rating and the chimney’s actual run. Guessing here causes draft problems that no amount of sweeping fixes.

OEM Famco liner sections are good product. But we also work with DuraFlex and Gelco liner systems where the application calls for them. The honest answer on OEM versus aftermarket for Famco specifically: the stainless alloy matters more than the stamp on the side. Famco uses 316L stainless in their flex liners, and so do the quality aftermarket equivalents we carry. What you’re really paying for with OEM is exact spec continuity. With aftermarket, you’re paying for availability. In San Antonio, where summer humidity and winter temperature swings chew through liners faster than drier climates, we typically recommend 316L stainless regardless of brand, and we’ll tell you when a 304 liner will do the job for less money.

Signs Your Famco Flue Liner Replacement Is Failing

• Rust stains on the firebox floor or around the cleanout door. This means condensation is running down the liner’s interior and pooling at the bottom. In San Antonio’s humid spring and fall, this is the single most common failure pattern we see on Famco liners that are ten years old or older.
• A metallic rattling or ticking sound when the furnace or water heater kicks on. That’s usually a liner seam that has separated and is vibrating against the flue wall. A separated seam lets exhaust escape into the chimney cavity instead of out the top.
• White or gray staining on the exterior brick above the roofline. That’s flue gas condensing and leaching through masonry because the liner is no longer containing it. On San Antonio’s older limestone and brick homes, this shows up as efflorescence, a white chalky crust that keeps coming back.
• Sudden difficulty starting a wood fire, or smoke rolling back into the room when you open the stove door. The liner may have collapsed or the interior has narrowed enough to kill the draft. A chimney that worked last season and won’t draw this season is telling you something structural changed.
• A persistent smell like damp metal or old ashes even weeks after the last fire. Moisture is trapped against a failing liner wall. It’s not just unpleasant. That trapped moisture accelerates corrosion, which takes a deteriorating liner and finishes it off.

If you’re seeing any one of these, the liner needs a camera inspection. If you’re seeing two or three, you’re probably past the point of a simple swap.

Replacement Cost & What’s Included

Here’s what we quote across San Antonio, and these are real numbers based on the homes we serve from Alamo Heights to Stone Oak to Helotes.

Every quote includes the liner material, connectors, any rain cap or top plate replacement needed, the full installation labor, and a camera scan before and after so you can see the condition with your own eyes. You get a written price before we start, and a written guarantee on the repair. If the liner fails within 365 days, the second visit and repair is on us. That’s our Done Right Promise and it’s been in effect since 2002.

A note on San Antonio pricing specifically: our cost landscape is shaped by roof access. Homes here run the gamut from single-story ranch ramblers to three-story King William Victorians. The taller the roofline and the steeper the pitch, the more setup and safety equipment the job requires, and that is honestly reflected in the quote, not hidden in a surprise charge.

DIY or Call Us?

There are exactly two things you can safely do yourself. First, look at the liner where it exits the chimney top and check for visible rust, gaps, or a rain cap that’s come loose. Second, take a flashlight and look up from the firebox or cleanout door for any shiny metal flakes or staining. Both of those are observation, not repair.

What you should not do is pull the liner, buy one online, and attempt the drop. Liners are heavy, they kink, the top plate has to be sealed correctly or you’ll create a leak, and connecting a gas appliance liner to the appliance itself is not a handyman project. A bad liner connection is how carbon monoxide finds its way into a home. Ruben Castellano learned this trade through Los Angeles Trade-Technical College’s building and construction program, and he’s spent years on San Antonio rooftops since. He’ll still tell you some chimneys surprise him. That’s the thing about this work: the chimney doesn’t reveal its problems until you’re inside the flue with a camera. Scheduling a professional replacement means the work gets done to code and you don’t spend a Saturday afternoon on a hot roof wondering if the seam will hold.

If you want a straight answer on whether your Famco liner needs replacing or just cleaning, call (903) 515-5079. We’ll come out, run a camera, and show you exactly what we saw. If the liner is fine, we’ll tell you that too. I would rather give you a straight answer today than a vague promise you have to call us back about tomorrow.

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