Famco Flue Liner Replacement in San Francisco, CA

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

We stock and install Famco-compatible flue liner replacement in San Francisco, with most jobs running between $1,800 and $3,400 installed depending on liner diameter, height, and whether the existing liner is stainless or terracotta. Same-day service is available when we have your diameter in stock, which we usually do for the common 6-inch and 8-inch Famco series. Most San Francisco homeowners discover the problem during a cold snap in the Richmond or Sunset when smoke starts backing up into the living room, or when a Level-2 inspection reveals cracked terracotta after decades of thermal cycling in our marine climate.

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Which Famco Models This Applies To

Famco builds flue liners across several series, and the replacement part you need depends on what is already in your chimney. The Famco stainless flexible liner line, common in San Francisco homes retrofitted during the 1990s and 2000s, carries model identifiers starting with FFL followed by the diameter and length, for example FFL-625 or FFL-830. The rigid Famco liner series, less common here but found in some Pacific Heights and Marina installations, uses a different collar and termination cap geometry that is not interchangeable.

To identify your liner, check the metal tag at the top of the flue where it meets the termination cap, or look for stamped markings on the liner collar itself. If the tag is corroded, which we see often in the fog belt, measure the inner diameter at the thimble and note whether the liner is corrugated flexible or smooth rigid pipe. We carry both Famco OEM and HeatShield-compatible aftermarket liners for the flexible series; for rigid Famco liners, OEM is the safer path because the collar lock-ring spacing differs from Olympia Chimney and Gelco equivalents by roughly 3/16 inch, enough to cause a poor seal.

Warren Eckhart learned to spot this compatibility gotcha the hard way, on a Twin Peaks job where an aftermarket collar looked right but leaked combustion gases at the joint. If the flue isn’t right, the fire isn’t right. Everything else follows from that.

Signs Your Famco Flue Liner Replacement Is Failing

• Smoke backing up into the room. A cracked or separated Famco liner loses its draft seal, especially in San Francisco’s dense, humid air where pressure differentials are already working against you. The fireplace that drew fine last season suddenly spills smoke because the liner gap is pulling room air instead of exhausting it.
• White or powdery efflorescence on the exterior brick. Moisture and combustion acids are migrating through gaps in the liner and condensing in the masonry. In the Outer Sunset where Warren grew up, two blocks from where the fog rolls in off the Great Highway, this shows up faster because the masonry never fully dries.
• Strong, acrid odor even when the fireplace is cold. A compromised Famco liner allows creosote-laden air to leak into wall cavities or the smoke chamber. The smell is often worse in older Victorians with balloon framing, where the leak path runs straight through interior walls.
• Visible rust stains at the chimney crown or on the roof. Stainless Famco liners can corrode from the inside if a crack lets acidic condensate pool at a low spot. We see this pattern in Noe Valley and Bernal Heights homes where the chimney offset creates a natural trap.
• Chunks of clay or metal in the firebox. Terracotta flues spall; stainless Famco liners can fatigue at stress points after 15 to 20 years of thermal expansion in our wide Bay Area temperature swings. Either way, debris in the firebox means the liner is shedding material into the combustion zone.

Replacement Cost & What’s Included

What drives the range: liner diameter, total linear feet from thimble to cap, whether we are pulling new through existing terracotta or removing damaged clay first, and access complexity. San Francisco’s steep roofs in Dolores Heights or the steep pitches in Sea Cliff add rigging time. Our estimate includes the Famco or compatible liner, new insulation wrap where code requires it, termination cap, collar adapter, and full cleanup. We provide no-hassle upfront pricing; 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.

DIY or Call Us?

There is a safe middle ground here, and then there is where DIY ends.

What you can check yourself: verify your Famco model from the tag, measure the flue diameter with a tape measure, and look down the flue with a flashlight for visible cracks, gaps, or debris. If you see rust powder or white staining, that is useful information to relay when you call.

Where DIY goes wrong: pulling a flue liner requires working at roof height on a steep pitch, often with a ladder set on San Francisco’s narrow, sloped sidewalks. The liner itself is heavy, flexible, and unforgiving; a dropped section can kink or tear, and a misaligned termination cap creates a carbon monoxide pathway into the home. We do not recommend homeowner installation. Our background-checked, uniformed technicians complete most Famco liner replacements in a single visit, and we have the rigging and experience for the roofs in this city. Call (855) 408-5567 for a free estimate.

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