Famco Flue Liner Replacement Nationwide

Famco Flue Liner Replacement: The Cambridge Owner’s Guide

Famco flue liner replacement in Cambridge typically runs $2,800-$4,600 installed, depending on liner diameter, flue height, and whether the existing tee and connector need replacement. We stock Famco-compatible stainless steel liners and connector components for same-day installation on most Cambridge chimney configurations. Most homeowners discover the problem during a routine sweep or when they spot rust flakes in the firebox after a hard rain.

Call (857) 309-1908

Which Famco Models This Applies To

Famco manufactured several liner series between the late 1980s and mid-2010s, and the part you need depends on which generation is in your chimney. The Famco FL series used a .006-inch 304-grade corrugated flex liner with a distinct green band near the top collar; the later FFL series switched to .012-inch 316Ti and a black band. The collar diameter, not the band color, is what matters: FL series ran 3-inch to 8-inch round, while FFL handled oval-to-round transitions common in Cambridge’s converted boiler flues. If your original paperwork is gone, check the upper termination - Famco stamped a model prefix on the rain cap clamp that survives decades of Boston freeze-thaw.

We carry OEM-pattern Famco replacements and 316Ti aftermarket equivalents from Olympia Chimney and DuraFlex that match the original spec. For Cambridge’s older housing stock, we often find the FL series was overspecified for the appliance; a 316Ti upgrade at the same diameter typically outlasts the original in salt-air conditions. We source through Haven’s buying network to keep the part cost transparent, and we’ll show you both options on the written quote before you decide.

Signs Your Famco Flue Liner Replacement Is Failing

• Rust-stained mortar joints on the exterior chimney breast. When a Famco liner’s outer wall corrodes, condensation migrates through the chimney structure and oxidizes the facing brick. In Cambridge’s freeze-thaw cycle, this accelerates spalling - the face of the brick pops off - and the stain pattern usually traces the liner’s path from fireplace to cap.
• Water in the firebox after rain, even with a cap in place. Famco’s upper termination assemblies used a slip-fit collar that seals with compression. After 15-20 years of thermal cycling, that seal loosens; water runs down the liner’s exterior and pools behind the damper. We find this constantly in Inman Square triple-deckers where the original 1990s install is reaching end of life.
• Flaking metallic debris when you sweep the firebox. 304-grade liners like the early Famco FL series corrode from the inside out when used with gas appliances producing chlorides in exhaust. The flakes are thin, magnetic, and rust-colored - distinct from masonry sand or creosote chips.
• Drafts that worked fine last season now push smoke into the room. A separated Famco liner can shift within the flue, especially in tall chimneys common near the Charles where wind load flexes the assembly. The gap between liner and clay tile becomes a pressure sink, and the fireplace loses its draw.
• Your home inspector flagged “recommend Level 2 inspection” on the chimney. Cambridge’s 2015-2025 homebuyer cohort hears this often. It usually means someone spotted a liner that looks wrong - wrong diameter, wrong material for the appliance, or visible gaps at the thimble. The camera shows the rest.

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Replacement Cost & What’s Included

What drives the range: flue height (a three-story Cambridgeport rowhouse vs. a single-story ranch near Alewife), whether we can pull the old liner intact or it has to be cut out in sections, and if the smoke chamber needs parging to meet current clearances. Every quote is written, itemized, and delivered before work starts - Haven Standard Clause 1. The 365-Day Done Right Promise covers the installation, and the liner itself carries a manufacturer’s warranty we register for you.

DIY or Call Us?

Here’s what you can safely check yourself: confirm the damper opens fully, look up the flue with a flashlight for visible gaps or light from above, and note any model markings on the cap. What you cannot safely do: pull a liner from a chimney that may have missing mortar between clay flue tiles, work on a roof with Cambridge’s typical 12/12 pitches and slate fragility, or properly torque a new termination assembly that must survive 70 mph northeasters.

The real risk isn’t the liner - it’s what you can’t see. A separated liner often masks deteriorated flue tile behind it. We’ve found collapsed wythes in Somerville and Cambridge chimneys where the owner assumed the liner was the only problem. Our NFPA 211 Level 2 inspection, camera down the flue, shows the full picture before any money is committed. Corrine Halstead put it plainly: “The camera doesn’t editorialize - it just shows you what’s there.” Call (857) 309-1908 and we’ll book the inspection; the written price comes after, not before, you know what you’re actually dealing with.

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