Famco Damper Repair Nationwide

Famco Damper Repair: The Allentown Owner’s Guide

Famco damper repair in Allentown typically runs $180-$340 installed, and we stock the most common Famco throat and top-mount damper assemblies on our trucks. Most replacements are completed in a single visit once we confirm the model and size. Homeowners usually discover the problem on the first cold night in October or November, when they open the damper and it won’t budge, or it falls open and won’t seal, letting the Lehigh Valley wind pull heated air straight up the flue.

Call (610) 632-1394

Which Famco Models This Applies To

Famco has manufactured dampers for decades under several series names, and the parts are not interchangeable across lines. The throat dampers most common in Allentown homes built between 1965 and 1995 are typically the Famco 1000 series (cast iron frame, 8-inch to 13-inch width range) or the later Famco 2000 series with the galvanized steel frame and stainless blade. Top-mount Famco dampers, often retrofitted in the 1990s and 2000s, carry a round cap with a chain or cable down the flue.

To identify yours, look for a stamped model number on the frame edge or the metal tag on a top-mount cap. If the tag is gone, measure the throat opening width and depth, note whether the frame is cast iron or stamped steel, and check if the control is a handle, knob, or chain pull. We carry both OEM Famco replacement assemblies and quality aftermarket equivalents from Copperfield that match the 1000 and 2000 series dimensions exactly. The aftermarket route saves roughly $40-$60 on parts without sacrificing fit or function, though some owners prefer the Famco name on the casting. Hearthstone Chimney Co. is an independent service provider, not affiliated with Famco.

Signs Your Famco Damper Repair Is Failing

• Handle turns but the blade doesn’t move. The linkage pin inside the frame has corroded or the gear strip has worn flat. In Allentown’s freeze-thaw cycles, rust forms where the frame meets the masonry, and the pin seizes even though the handle feels free.
• Blade falls open on its own or won’t stay closed. The torsion spring or counterbalance has lost tension. On Famco 1000 series units, this spring is riveted to the frame and not field-replaceable; the whole assembly needs to come out.
• Visible rust flakes or orange staining on the firebrick below. The damper blade or frame is corroding through. Once the metal thins, the seal is gone and the flue draws room air even when “closed.”
• Smoke rolls into the room on startup. The blade is warped or jammed partially open, choking the flue draft. This gets worse in Allentown’s older homes near West Park, where flues are often oversized for modern heating loads.
• Squealing or grinding when operated. The pivot bushings are dry and worn, or debris has wedged in the track. Continued forcing bends the blade edge, and then the frame itself has to be replaced.

Replacement Cost & What’s Included

What drives the range: accessibility (firebox depth, smoke chamber shape), whether the old frame is rust-welded in place, and whether the firebrick below needs repointing after extraction. We quote the full number before we start, and that’s the number on the invoice. Every Famco damper replacement carries our 90-Day Done Right Promise in writing, parts and labor both.

DIY or Call Us?

An owner can safely check whether the handle moves freely and look up the flue with a flashlight for obvious rust or debris. Do not attempt to remove a rust-seized damper frame yourself. The cast iron is brittle, the masonry surround cracks easily, and a falling frame edge can crush fingers or break firebrick that supports the structure above. The pivot springs on Famco units carry enough tension to snap loose if the retaining pin shears.

We pull the old frame with proper support blocks, clean the seat, bed the new unit in refractory mortar, and check the seal with a smoke pencil before we leave. Most jobs take 90 minutes to two hours. Call (610) 632-1394 and we’ll confirm your model over the phone, check truck stock, and book a time that holds.

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