Famco Flue Liner Replacement Nationwide

Famco Flue Liner Replacement: The Annapolis Owner’s Guide

We stock and install Famco-compatible flue liner replacement in Annapolis, with most complete liner jobs running $2,900 to $5,400 depending on flue height, diameter, and whether you need insulation. A straight swap of a failed section on a shorter flue can run closer to $1,800 to $2,400. Most Annapolis homeowners discover their Famco liner has failed either through a Level 2 camera inspection during a routine sweep, or because rust flakes and condensation stains start showing up in the firebox below.

Call (443) 274-4231

Here’s the reality in Annapolis: our damp Chesapeake air and irregular burning seasons are hard on thin-wall stainless liners. Moisture sits in the flue for months between fires, and that’s exactly what accelerates corrosion at the seams and weld points. If your Famco liner is pitting or pulling apart at the joints, you’re looking at a replacement decision, not a patch job.

Which Famco Models This Applies To

Famco has produced a few distinct liner lines over the years, and matching replacement components comes down to diameter, wall thickness, and connection type. The original Famco round and oval flexible liners, typically marketed for gas and oil appliances, run from 3-inch up to 8-inch diameters. Older Famco liners are almost always 316L stainless in the flexible sections, but the tell is at the connection collars – some are riveted, some are band-clamped, and a few early 2000s models used a twist-lock that’s no longer manufactured.

Before we order anything, we confirm three measurements: inside diameter of the existing liner, total flue height from appliance outlet to termination, and the condition of the connector collar. If the original liner is too degraded to measure accurately, we take the measurement from the appliance outlet and the clay tile dimensions. The compatibility gotcha we see most in Annapolis homes is that a Famco liner installed for a gas furnace in the 1990s is often a thinner 304 alloy, not 316L, and simply swapping in any aftermarket liner without checking the alloy spec won’t hold up to our humidity.

When Famco liner sections are no longer manufactured in the exact size and connection style, we use equivalent aftermarket liners from DuraFlex, HeatShield, or Gelco that meet or exceed the original spec. Corrine Halstead’s rule is simple: if it’s not a documented match on alloy, wall thickness, and UL listing, it doesn’t go up a flue in Annapolis.

Signs Your Famco Flue Liner Replacement Is Failing

• Rust staining or flaking in the firebox or at the cleanout door. This means water is getting into the liner and the liner is oxidizing from the inside out. On Famco liners, this usually starts at the bottom connection where condensation pools.
• A metallic or chemical odor during burn cycles. When the liner develops cracks or pinholes, combustion gases pass into the chimney cavity and push back into the living space. This is a carbon monoxide path, not just a smell.
• Visible separation at the liner seams or joints during a camera inspection. We see this most often on the flex sections where years of heating and cooling cycles have fatigued the welds. Once a seam opens, the liner stops being a contained passage.
• White or chalky deposits on the exterior brick of the chimney. Efflorescence means moisture is moving through the masonry, and a compromised liner accelerates that by allowing acidic condensate to migrate outward.
• Your carbon monoxide detector trips when the appliance runs. Treat this as an emergency. Stop using the appliance and call us at (443) 274-4231. A Famco liner that leaks flue gas is not safe to operate.

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Replacement Cost & What’s Included

For Annapolis homes, here’s what we quote in writing before any work starts:

• Full Famco-compatible liner replacement, 4-inch to 6-inch diameter, single story flue: $2,900 to $3,800
• Full replacement with insulation wrap, two-story flue, or oval-to-round conversion: $4,200 to $5,400
• Partial section replacement where connection and remaining liner are sound: $1,800 to $2,400
• Camera inspection with photo report, required before replacement: $249, credited back to the install if we do the work

Every quote includes the liner material, connection hardware, termination cap if needed, labor, and a documented photo record of the completed install. You get a written scope and a written warranty before anyone touches the flue – that’s Haven Standard Clause 1. If you bring us a competitor’s written estimate, we’ll give you a free second opinion. We don’t ask you to take our word for anything; the camera footage shows you exactly what we found.

DIY or Call Us?

Here’s the honest split. What you can safely do yourself: shine a flashlight up from the firebox and look for obvious rust flakes, condensation stains, or daylight showing through open seams. You can take photos and note anything that looks wrong. That’s useful information when you call.

What you should not do: drop a flexible liner down a chimney without a camera inspection first, without confirming the existing clay tiles can accept the new diameter, and without checking that the appliance connector and draft characteristics are still correct. A liner that’s too short for the flue height, the wrong alloy, or poorly supported at the termination creates a carbon monoxide pathway in your home. This is not a Saturday project. In Annapolis, where many chimneys run through damp salt-air exteriors and irregular use, the risk of getting it wrong is real. Call (443) 274-4231 and we’ll get the camera down the flue before anything else.

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