Famco Damper Repair Nationwide

Famco Damper Repair: The Cambridge Owner’s Guide

We stock and install Famco-compatible damper repairs across Cambridge, with most jobs running $340-$620 installed depending on whether the plate, frame, or both need replacement. Parts for common Famco throat dampers, including the 8-inch through 16-inch galvanized and stainless series, are usually on our truck. If we don’t have your exact model in stock, we’ll source it within 24-48 hours and schedule the swap.

Call (857) 392-4709

Most Cambridge homeowners discover their Famco damper has failed on the first cold night in October or November. The handle turns but the plate won’t open, or it opens and won’t close again, or there’s a rusted chunk sitting in the smoke shelf that used to be the hinge pin. In the older homes along Brattle Street and around Harvard Square, we see a lot of original Famco dampers from the 1970s and 1980s that have simply eaten through from decades of acidic flue gas and New England freeze-thaw cycles.

Which Famco Models This Applies To

Famco has produced throat dampers under several series names over the years, and the part you need depends on which generation is in your chimney. The most common in Cambridge are the galvanized steel “Standard Duty” line (typically 8″, 10″, 12″, 13″, and 16″ round; also 8×12, 8×13, and 13×13 rectangular), the stainless steel “Heavy Duty” series for oil and coal conversions, and the older cast-iron pivot-style dampers that Famco discontinued in the mid-1990s. The label is usually stamped on the handle bracket or the frame edge, though in many Cambridge homes it’s rusted to illegibility.

If you can’t read the label, measure the throat opening width and depth, note whether the plate pivots on a center rod or slides on side rails, and check whether the frame is mortared into the brick or set with construction adhesive. That combination tells us exactly what to bring. We are an independent service provider, not affiliated with Famco, but we source OEM Famco parts and, where OEM is no longer manufactured, we use quality aftermarket equivalents from Gelco and Olympia Chimney that match the original specs. The aftermarket route saves $40-$80 on parts for discontinued models without sacrificing fit.

One compatibility gotcha: the 13-inch round Famco damper from the 1980s used a slightly different frame depth than the current production 13-inch. If your chimney was built in that era and you’re ordering parts yourself, the modern 13-inch frame may sit proud of the throat by a quarter inch. We carry both specifications on the truck.

Signs Your Famco Damper Repair Is Failing

• The handle spins freely but the plate doesn’t move. The linkage between the handle spindle and the damper plate has corroded through or the cotter pin has sheared. This is the most common Famco failure we see in Cambridge, especially in homes within a mile of the Charles where salt air accelerates rust.
• The plate is stuck open and you can’t close it even by reaching up with a poker. The hinge pin has seized in the frame, usually from creosote glazing combined with rust. Operating the handle harder just twists the spindle without moving the plate.
• You feel a cold downdraft even when the fireplace is not in use. The damper plate has warped or the frame has settled, leaving a gap that lets outside air pour down. In Cambridge’s older masonry chimneys, this gap is often 1/4 to 1/2 inch by the time homeowners notice the heating bill spike.
• There’s a rattling or clanking sound when the wind blows. A section of the damper plate has broken off and is hanging by one hinge, or the frame has pulled loose from its mortar bed. This will eventually drop into the firebox or smoke shelf.
• You see rust flakes or water staining on the firebrick below the damper. The galvanized coating has failed and the steel is exfoliating. Once this starts, the remaining metal life is typically one to two burning seasons in Massachusetts humidity before perforation.

Replacement Cost & What’s Included

For a standard Famco throat damper replacement in Cambridge, most homeowners pay between $340 and $620 installed. The low end covers a straightforward swap of the plate and handle on a sound frame in an accessible firebox. The high end applies when the frame itself has rotted out and must be chiseled from the mortar bed, reset, and repointed, or when the smoke shelf above needs debris removal to reach the hardware.

Every repair includes a Level-2 camera inspection before we quote, so you see exactly what we see. The price we agree to is the price on the invoice. Parts carry the manufacturer’s warranty; our labor is covered by the 90-Day Done Right Promise, in writing, no arguing. If it needs doing, we will tell you. If it does not, we will tell you that too.

DIY or Call Us?

There are two things a homeowner can safely check: whether debris on the smoke shelf is blocking the plate, and whether the handle set screw has simply loosened. Both require a flashlight, a fireplace tool, and a steady ladder. Do not reach up into the throat without eye protection, and do not attempt this if you have any balance concerns on the hearth.

Everything else, we recommend leaving to a trained sweep. The frame is under tension when mortared in place, and chiseling it loose without supporting the surrounding brick can crack the lintel. The plate itself is heavy galvanized steel, often sharp at the edges from corrosion, and a dropped plate in a confined firebox risks hand or wrist injury. We’ve also seen homeowners seal a chimney shut with the wrong caulk or install a plate backwards, creating a carbon monoxide path into the home. For a repair that affects both draft control and safety, the cost of a botched DIY job usually exceeds professional installation by a wide margin. Call (857) 392-4709 and we’ll give you a straight answer on what you’re dealing with.

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