Famco Flue Liner Replacement Nationwide

Famco Flue Liner Replacement: The Trenton Owner’s Guide

Famco flue liner replacement in Trenton typically runs $1,800 to $3,400 installed, depending on chimney height, diameter, and whether the existing liner is stainless or aluminum. We stock Famco-compatible liners and connectors for same-day installation on most standard residential jobs in the Trenton area. Most owners discover the problem during their pre-burning-season sweep, when our camera finds cracked seams, pinholes, or separation at the collar that wasn’t visible from the firebox.

Call (856) 519-0832

Which Famco Models This Applies To

Famco manufactured several liner series over the years, and the right replacement depends on what is currently in your chimney. The most common we encounter in Trenton homes are the Famco flexible stainless liners in 5.5-inch and 6-inch diameters, originally sold through hearth retailers from the late 1990s through about 2015. Check the top collar or the tag left at the cleanout door for a model prefix, usually starting with FL or FFL followed by the diameter code.

Here is the compatibility gotcha: Famco used two different collar designs. The earlier FL series has a flat, bolted collar that mates with a specific thimble plate. The later FFL series switched to a rolled-edge collar that seals with a compression band. Mixing the collar type with the wrong thimble causes a gap that leaks condensation into the masonry. We carry both collar styles on the truck, plus the transition fittings when a homeowner is pairing a Famco liner replacement with a new appliance connection.

For OEM versus aftermarket, Famco as a brand has been absorbed into larger distribution channels, so factory-original liners in exact Famco packaging are increasingly scarce. We source replacement liners from the same production facilities that supplied Famco’s later runs, certified to UL 1777 and matching the original gauge and alloy specs. The difference is the name stamped on the collar, not the metal.

Signs Your Famco Flue Liner Replacement Is Failing

• White or orange staining on the exterior brick below the roofline. This means flue gases and condensation are escaping through liner cracks or failed seams, then migrating through the mortar joints. In Trenton’s freeze-thaw climate, this accelerates spalling brick damage every winter.
• Water in the cleanout or rust flakes in the firebox. A intact liner keeps combustion moisture contained and venting upward. Pinholes or separated collar joints let that moisture condense inside the chimney shell instead, and stainless liners do eventually corrode when the protective oxide layer is compromised.
• Smoky odor when the furnace or fireplace is not running. This usually points to a liner that has pulled away from the appliance connector, creating a dead air space where smoke and CO can backdraft into the house. The smell is a warning; the carbon monoxide risk is the reason to act.
• Visible gaps or waviness in the liner wall during inspection. Flexible liners fatigue at stress points, especially where they bend from the smoke chamber into the vertical flue. Our camera catches this before it becomes a full separation.
• Your sweep recommends replacement after two consecutive visits. When a liner is patched once and needs attention again the next season, the metal is telling you its service life is ending. We document this with dated photos so you can see the progression yourself.

Replacement Cost & What’s Included

What drives the range: chimney height, whether we can pull the old liner in one piece or must cut and extract it, and whether the thimble plate and connector need replacement too. We price this upfront after inspection, not after we are halfway up the ladder. 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, and we register the warranty with the manufacturer so you are covered if you sell the home.

DIY or Call Us?

There is honest work a homeowner can do: verify the diameter with a tape measure through the cleanout, photograph any tags or stamps on the existing collar, and check that the cleanout door closes securely. These details save us time and save you money on the estimate.

What we do not recommend: pulling a liner yourself. The old liner may be wedged with creosote buildup, the masonry may be brittle after decades of Trenton freeze cycles, and the roof work is genuinely dangerous. More critically, a liner that is not sized and seated correctly creates a carbon monoxide pathway you cannot see from the firebox. We have found DIY liner jobs with the top collar three inches short of the flue top, venting directly into the attic space. If the chimney’s not right, the fire’s not safe. That’s the whole job.

Call (856) 519-0832 and we will walk through what you are seeing, schedule a camera inspection, and give you a price that does not change.

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