Famco Flue Liner Replacement Nationwide

Famco Flue Liner Replacement: The Wilmington Owner’s Guide

We stock and install Famco-compatible flue liner replacement in Wilmington, with typical installed pricing running $1,800-$3,400 depending on flue height, diameter, and whether the surround needs resealing. Most Famco stainless or aluminum liner swaps we book are completed in a single day, and we carry common diameters from 3″ to 8″ on our trucks. Most Wilmington homeowners discover the problem during a routine sweep when the camera shows gaps, corrosion scaling, or separation at the collar - or when they notice drafting problems and moisture staining on the firebox wall that weren’t there last season.

Call (610) 546-5053

Which Famco Models This Applies To

Famco produces flexible stainless steel liners, rigid aluminum venting, and the transition collars that connect them to factory-built fireplaces and appliance adapters. The critical detail is the series designation stamped on the collar band or printed on the original installation tag. Famco’s flexible liners typically carry an FL-series marking (FL-316, FL-304, FL-Alum) that indicates alloy grade and wall thickness. Rigid sections are marked RV or RVL followed by the diameter.

Here’s where owners get tripped up: Famco collars from the early 2000s used a slightly different offset angle (15 degrees versus the current 11.5 degrees) that mates poorly with newer replacement sections. We measure this on every job. If your original installation predates 2010, we verify the collar geometry before ordering - mixing the old offset with new stock creates a gap that leaks combustion gases into the chase within two heating seasons.

We source Famco OEM through Haven’s buying network, and we also stock HeatShield and DuraFlex equivalents when the original series is discontinued. The aftermarket decision depends on what your warranty requires and what the camera shows upstream. We document both options in writing before you choose.

Signs Your Famco Flue Liner Replacement Is Failing

• Draft reversal or smoke spillage at startup. A separated Famco collar or cracked flex section lets room air into the flue, destroying the temperature differential that pulls smoke upward. In Wilmington’s older Brandywine homes with tall, exterior chimneys, we see this most often after freeze-thaw cycles have worked the collar loose.
• Moisture or rust staining on the firebox walls. Condensation forms when exhaust cools too quickly in a compromised liner, and that water carries acidic residue that stains masonry or corrodes metal fireboxes. The stain pattern usually points to the leak location before the camera ever goes up.
• White or tan powdery deposits on the liner surface. This is efflorescence from moisture migration through gaps in the liner - a sign the Famco section has perforated or the seam has opened. It means combustion gases are contacting the chimney structure directly.
• Debris or creosote falling into the firebox between burns. A liner that’s shifted or collapsed internally creates ledges where creosote accumulates; gravity does the rest. We pulled fourteen pounds of packed creosote from a collapsed Famco flex in Trolley Square last February - the homeowner thought it was just “old chimney dust.”
• Carbon monoxide detector alerts near the hearth. Any liner failure that allows spillage raises CO risk in the living space. This is not a troubleshooting item; if your detector sounds, exit and call the fire department, then call us for the liner inspection.

Before

After

Replacement Cost & What’s Included

What drives the range: flue height from appliance to termination, diameter (larger = more material + harder pull), whether the chase needs partial disassembly for access, and the condition of the existing top seal. Every quote we write itemizes parts, labor, and any chase work separately - Clause 1 of the Haven Standard requires it. The liner carries a lifetime warranty on material defect; our labor is covered by the 365-Day Done Right Promise. You get the written price, the written scope, and the written warranty before we touch anything.

DIY or Call Us?

There’s a safe middle ground here, and then there’s where it ends. You can verify the model marking on your collar, measure approximate flue height with a tape, and check for obvious collar separation or top-cap damage from the roof - if you have safe roof access and proper fall protection. What you cannot safely do: pull a liner through a chase with offset bends, torque collar connections to the proper seal spec, or verify draft and spillage with a manometer after installation. Combustion venting is governed by NFPA 211 and local Wilmington code; improper liner installation creates carbon monoxide hazard and voids homeowner’s insurance if damage occurs. We’re not affiliated with Famco - we’re an independent service provider - and we won’t tell you a job is simpler than it is to get the call. Here’s what the camera found. Here’s what it costs to fix it. You decide.

FAQs