Famco Flue Liner Replacement Nationwide

Famco Flue Liner Replacement: The Milford Owner’s Guide

We stock and install Famco-compatible flue liner replacement in Milford, with most jobs running $1,800 to $3,400 installed depending on chimney height, diameter, and whether the existing liner pulls out clean or has to be cut out in sections. If your Famco liner is cracked, separated at the seams, or showing corrosion spots from years of acidic flue gases, we can measure, match, and install the correct replacement - typically in a single visit with the liner spec’d to your appliance’s BTU output and your chimney’s interior dimensions. Most Milford homeowners discover the problem during a routine sweep when our camera catches daylight through a split seam, or when they notice bits of stainless steel flakes in the firebox, a faint smoke smell in upstairs rooms, or a sudden draft problem on windy days along the Delaware River.

Call (610) 991-8179

Which Famco Models This Applies To

Famco manufactured several liner series over the years, and the replacement approach differs by what you have up there. The Famco 316Ti flexible liner, common in installations from the late 1990s through the mid-2000s, used a .006-inch wall thickness with corrugated construction that made it forgiving of offset flues but also created stress points at every corrugation valley. The heavier Famco 304 alloy rigid sections, often found in straight vertical runs in newer Milford construction, used .012-inch walls with rolled-seam joints that can corrode from the inside out while looking fine from the outside.

To identify what you’ve got, check the top termination for a stamped collar - Famco usually marked the alloy grade and manufacturing date within an 18-month window. If the collar’s corroded off, we measure interior diameter with a chimney ruler and check wall thickness with a borescope caliper. The OEM Famco replacement is no longer manufactured, but we source compatible 316Ti and AL29-4C alloy liners from the same foundries that supplied Famco’s original stock, sized to match your existing top plate and appliance connector without custom fabrication. For Milford’s wet winters and freeze-thaw cycles, we spec .007-inch minimum wall thickness on flexible replacements - the extra rigidity resists the thermal shock that split thinner liners in homes near the river.

Signs Your Famco Flue Liner Replacement Is Failing

• Metallic flakes or “soot” with a silver sheen in the firebox. This is oxidized stainless steel shedding from the liner interior. In Milford’s older farmhouses with woodstoves, we see this most often where the liner passes through the smoke chamber - the temperature differential and acidic condensation eat the alloy from both sides.
• Draft reversal or smoke spillage on windy days. A separated seam or crack near the top termination creates a pressure leak. The prevailing westerlies off the Delaware River valley will push down through that gap and force exhaust back into the house, especially in two-story homes with tall chimneys.
• Water staining on the chimney breast or adjacent wallboard. A failed liner allows combustion moisture and exterior rain to reach the masonry. In Milford’s freeze-thaw climate, this accelerates spalling and can destroy a chimney crown in two seasons if the liner isn’t addressed.
• Strong smoke odor in upstairs bedrooms or attic space. This means exhaust is leaking through the liner wall and migrating through construction gaps. With a Famco liner, the corrugated design creates hundreds of potential leak paths once the alloy thins past .003-inch remaining wall.
• Visible rust streaks on exterior masonry despite a “stainless” liner. The 304-grade Famco liners were not acid-resistant enough for modern EPA-certified stoves running at lower flue temperatures. Condensate pH in pellet and efficient woodstove systems runs 2.0 to 3.5, which 304 cannot survive long-term - 316Ti or AL29-4C replacement is the fix.

Replacement Cost & What’s Included

What drives the range: chimney height over 25 feet adds liner footage and pull-rope work; offset flues requiring multiple bends need more labor and a more flexible alloy; and if your existing Famco liner has collapsed or wedged itself with creosote buildup, removal runs longer. Our estimate includes the Level-2 camera inspection before and after, photos you keep, and the 90-Day Done Right Promise in writing. The number we quote is the number on the invoice - no surprises on the bill.

DIY or Call Us?

There’s a honest line here, and we’ll say it plainly. A homeowner can safely check the firebox for metallic debris, shine a flashlight up the damper throat to spot obvious separations, and confirm the stove or fireplace is drafting normally on a calm day. What you cannot safely do is climb the roof to inspect the top termination, attempt to pull a liner that may be wedged or partially collapsed, or work inside a chimney flue where CO exposure is immediate and invisible.

We’ve been called to Milford homes where a well-meaning owner got the old Famco liner halfway out, dropped it, and blocked the flue entirely - or worse, damaged the clay tile surround and turned a liner swap into a full rebuild. The liner removal requires controlled tension, proper rigging, and knowledge of when the alloy is too compromised to pull in one piece. We’re not saying this to drum up work. We’re saying it because a blocked flue or a fall from a roof is a permanent problem, and we’ve seen both. Call (610) 991-8179 and we’ll give you a straight answer on whether your situation is something you can monitor or something that needs us this week.

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