Level 1 sweep and inspection to the NFPA 211 annual standard - flue, crown, cap, and flashing checked and photographed
Chimney sweep logs do not sweep chimneys. They loosen some creosote - which then falls where a brush and vacuum still have to collect it.
Famco Damper Repair: The Lawrence Owner’s Guide
Famco damper repair in Lawrence typically runs $190 to $380 installed, and we keep common Famco replacement parts on the truck so most jobs are finished in a single visit. The part itself is a straightforward swap once we’ve matched the throat diameter and frame style. Where owners usually discover the problem is the damper blade sticking open, rattling in wind, or refusing to seal.

Most Lawrence homes we work in have Famco cast-iron throat dampers installed in the throat of the firebox, just above the fire itself. The constant heat cycling, the salt air off Jamaica Bay, and the way these older houses settle all take their toll on that thin metal plate and its hinge. You’ll notice it on a cold January evening when the wind is whistling down the flue and you can feel the draft standing six feet from the hearth.
Which Famco Models This Applies To
Famco has been making dampers for decades, and most of the ones we see in Lawrence are either the standard cast-iron throat damper in 32″, 36″, 42″, and 48″ widths, or the newer top-sealing cap model that sits at the flue exit instead of above the firebox. Identification matters. Look for the stamped Foundry mark on the damper frame edge, usually “Famco” with a size number. If the stamp is gone, we measure the throat opening side to side. A 36″ fireplace takes a 36″ damper, and that has to match exactly. A 34″ or 38″ won’t seat properly no matter how much you fight it.
We’re an independent shop, not affiliated with Famco, but we’ve installed and repaired enough of their dampers to know their sizing on sight. When the original OEM part is still available, we’ll say so and quote it. When it’s not, there are quality aftermarket equivalents, often from Gelco, that fit the same frame footprints. We’ll tell you which one we’d put in our own fireplace and why.
Signs Your Famco Damper Repair Is Failing
- The blade won’t stay open or closed. The cast teeth on the operating lever or the pawl that holds position have worn round. If you set the damper and it drops or creeps, that’s usually the cause.
- You hear a rattle every time the wind blows. The hinge pins have wallowed out or the blade has warped slightly, so air movement makes the plate chatter in its frame. It only gets louder as the metal wears further.
- Cold air rolls into the room when the fire’s out. The blade is no longer seating flat against the frame. Warpage, soot creep, or a failed gasket on top-sealing models lets flue air spill back down into the house.
- The lever or handle has come loose from the blade. The connecting rod or cotter pin has burned through or snapped. You can push the handle all day and nothing moves at the top.
- Visible cracks in the cast iron. Cast iron doesn’t flex. Once it cracks, the plate or frame will continue to fail, and patching a cracked throat damper is throwing good money at a part that’s finished.
One of these alone usually means a simple parts repair. Two or more usually means we’re replacing the whole assembly, which is still a same-day job in most Lawrence chimneys.
Replacement Cost & What’s Included
For a standard Famco throat damper swap in Lawrence, expect $190 to $380 installed, depending on the size and whether we’re replacing just the blade and hardware or the full frame assembly. Top-sealing cap models run higher because we’re working at the crown of the chimney. The price Wendell quotes on the phone is the price on the invoice. That includes the part, the labor, cleaning the seating surface so the new blade seals true, and testing the operation before we leave.

Every Famco damper repair we do is covered by the 90-Day Done Right Promise. If the damper isn’t seating right or the handle binds, one call brings us back at no additional cost. That’s in writing. We also offer $40 off any repair over $200, and seniors and veterans always get 10% off.
DIY or Call Us?
Honest answer: there’s not much danger in replacing a throat damper, it’s not heavy spring-tension work like a clothes dryer or garage door. What usually goes wrong for a homeowner is the reach. The damper sits at arm’s length deep inside a narrow firebox, held in place by mortar angles that are often buried in decades of creosote and ash. Getting the old frame out without damaging the throat bricks, and getting the new one seated so it actually seals, is awkward work with the wrong tools. We see it all the time, someone bought the part online and spent a weekend fighting it before they call us.
What you can do safely: note the size if you can read it, take a picture of the damper blade with your phone, and give us a call. A photo helps us match the right part before we come out. If you don’t have the size, don’t worry. We’ll measure on site and tell you if we have it on the truck. Call (516) 604-2573 and Wendell will walk you through it. If it’s clean, I’ll tell you it’s clean.
FAQs
Twenty to thirty years is typical for a cast-iron throat damper in this climate, and often less if the fireplace is used heavily or the chimney has been damp for long stretches. Salt air and temperature swings along the South Shore age cast iron faster than inland, so we inspect the blade and hinge whenever we’re in the flue anyway.
Often just the blade, handle, or linkage hardware can be replaced while the frame stays put. It depends on what’s failed. If the frame is cracked or the seating surface is pitted out, replacing the whole assembly is the better money in the long run. We’ll show you the worn part before any work starts.
Most throat damper swaps in Lawrence take about an hour, sometimes ninety minutes if we’re scraping old mortar and doing a full frame replacement. Top-sealing models at the flue exit can take a little longer because of the ladder work. If we have your size on the truck, it’s one visit.
Yes. We keep the most common Famco sizes and hardware on the truck, and we also stock compatible parts from Gelco, DuraFlex, HeatShield, and Copperfield for jobs where a Famco-specific piece isn’t the best option. Give us a call at (516) 604-2573 and we’ll tell you before we show up whether we have your size.
Written by Wendell Pike, Owner, Top Hat Chimney, serving Lawrence and nearby areas.





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