Famco Flue Liner Replacement Nationwide

Famco Flue Liner Replacement: The Fresno Owner’s Guide

Famco flue liner replacement in Fresno typically runs $1,850 to $3,400 installed, depending on liner diameter, height, and access. Alcott Chimney Fresno stocks Famco-compatible stainless steel liner sections on our trucks, so most replacements are completed the same week we diagnose the failure. Most Fresno homeowners discover the problem the classic way: a chimney inspection flags rust-through, or they notice flakes of metal dropping into the fireplace after a hot fire. You don’t need a new fireplace. You need the liner matched and swapped, and that’s a job we do often on older Fresno homes, from craftsman-era flues near the Tower District to mid-century builds in Fig Garden.

Call (559) 215-1714

Key takeaways:

• Famco liners fail from moisture and heat cycling, not from normal soot accumulation.
• We match diameter, gauge, and connection type to your existing Famco setup, not whatever happens to be on the shelf.
• Every replacement includes a written price before work begins and a written guarantee on the repair.
• We’re an independent service provider. We install and service Famco products but aren’t affiliated with the manufacturer.

Which Famco Models This Applies To

Famco makes flue liners and venting components in several configurations, and the replacement path depends on how yours is built. The most common Famco liner setups in Fresno are single-wall rigid stainless sections, typically 4 to 8 inches in diameter, used for gas appliance venting or oil-to-gas conversions. Some Fresno homes built in the 1980s and 1990s also have Famco double-wall B-vent runs, where the inner wall corrodes while the outer wall looks fine from the attic. That’s a trap: a clean-looking outer pipe with a failing inner liner will still leak combustion gases into the chase.

If there’s a readable label left on the pipe, look for the Famco series stamp and diameter marking. If the label is gone, which is most of the time, we measure the inside diameter, check the gauge with a caliper, and match the connection type. Famco sections use either twist-lock or band-clamp joints depending on age, and you cannot mix those freely. We also handle the OEM-versus-aftermarket question directly: for Famco gas vent, the critical specs are alloy grade and wall gauge, not the brand stamp. A matched 316L stainless section from a professional trade line installs cleanly and lasts as long as the original. We never substitute galvanized hardware or thinner box-store flex where a rigid Famco section is called for.

Signs Your Famco Flue Liner Replacement Is Failing

• Flakes of metal in the firebox or at the cleanout. This is the liner shedding oxide scale. It means the metal is thinning and the failure is already underway, not beginning.
• A sulfur or sulfur-plus-condensation smell after the furnace or water heater cycles. Exhaust gas is leaking into the chase or wall cavity. This is not a nuisance odor; it’s a combustion gas pathway problem.
• Visible rust streaks on the exterior of the pipe in the attic or crawl space. On a double-wall Famco B-vent, exterior rust usually means the inner liner has failed and hot condensate is wicking outward.
• Water in the firebox after rain, even with a cap installed. A rusted-through liner will pass water into the appliance. The cap being present doesn’t matter when the pipe wall itself is gone.
• Flame roll-out or soot staining on the burner door of a gas appliance. The vent isn’t drawing correctly, which on a corroded Famco liner signals partial collapse or blockage from fallen scale.

Replacement Cost & What’s Included

In Fresno, a Famco flue liner replacement is price-dependent on four things: liner diameter, total vent height, access difficulty, and how much of the surrounding enclosure must be opened to reach the pipe. Here’s the range we quote most often:

• 4 – 5 inch single-wall gas vent replacement: $1,850 – $2,400 installed
• 6 – 8 inch single-wall or B-vent replacement: $2,300 – $2,900 installed
• Full chase rebuild with new Famco-compatible liner and insulation: $2,900 – $3,400 installed

Every quote includes the liner sections, connectors, fasteners, and labor, plus a written price before we begin so there’s no version of this job where you find out the real number after the wall is open. If the repair fails within the coverage period, the second visit is free. We also write on the quote which specific parts we’re using and why, so you’re not left trusting a line item called “misc. venting.”

DIY or Call Us?

You can safely check two things yourself. First, look at the exposed pipe in the attic or crawl space with a flashlight and note any rust streaks, gaps at the joints, or a white crust at the seams. Second, look inside the cleanout at the base of the flue with a mirror. If you see rust scale or metal flakes, stop there and call us. What you should not do is unbolt vent sections or attempt a patch with furnace tape or high-temp sealant. A failing vent liner is a combustion gas containment issue. Carbon monoxide is colorless and odorless, and the worst-case failure mode doesn’t give you a warning symptom first. That’s the one area where we’ll always say the words: don’t try this one yourself. Call (559) 215-1714 and we’ll come out, measure it, and tell you exactly what it needs.

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