Gelco Damper Repair Nationwide

Gelco Damper Repair: The Fort Worth Owner’s Guide

Gelco damper repair in Fort Worth typically runs $280-$520 installed, depending on whether we’re replacing the plate, the frame, or the full assembly. We stock common Gelco damper components on our trucks and can usually match your model same-day. Most Fort Worth homeowners discover the problem when smoke rolls back into the living room on the first cold snap, or when they spot rust flakes in the firebox after our humid spring storms.

Call (682) 499-2712

Which Gelco Models This Applies To

Gelco built throat dampers under several product lines, and the part you need depends on the vintage. Pre-2010 units often carry cast-iron plates marked with a stamped “G” and a size code, typically 30″, 36″, or 42″ to match standard flue widths. Newer Gelco dampers switched to galvanized steel frames with a riveted model tag on the handle side. The critical compatibility gotcha is the frame depth: older Fort Worth homes in Mistletoe Heights and Berkeley Place frequently have 13″ deep smoke chambers that won’t accept the shallow-frame retrofit kits sold at big-box stores. We measure this with a chimney camera before ordering anything.

We source OEM Gelco parts through Haven’s buying network alongside quality aftermarket equivalents from Famco and Olympia Chimney. OEM matches exact handle geometry and pivot spacing, which matters if your surround is custom masonry. Aftermarket saves roughly $40-$80 on the part and carries the same 10-year warranty in our experience. Corrine Halstead makes the call on which to spec after she sees what the camera shows.

Signs Your Gelco Damper Repair Is Failing

• The handle spins freely or drops. The worm-gear or chain-drive mechanism inside the frame has stripped its teeth. On Gelco units built before 2005, this gear was brass and wears faster than the steel replacement we install now.
• You feel a cold downdraft even when the damper is “closed.” The plate has warped from repeated heating cycles, or rust has pitted the sealing edge. Fort Worth’s temperature swings, 95°F in October down to hard freeze by January, accelerate this fatigue.
• Smoke spills into the room on startup. The plate is stuck partially open from creosote buildup or corrosion at the pivot pins. This is common in homes that burn unseasoned post oak, which is half the firewood sold around Tarrant County.
• Water stains on the firebox walls below the damper. The frame has separated from the lintel, or the plate gasket has rotted out. Our spring storms drive rain past a failed seal fast.
• The plate won’t open fully. Debris, a displaced firebrick, or a swollen wooden lintel is binding the mechanism. We check this with the camera before touching anything, because the real problem is sometimes above the damper, not the part itself.

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Replacement Cost & What’s Included

The range depends on three things we measure on site: frame depth, whether the lintel needs refractory repair, and if we can access the throat without removing facing material. Every Gelco damper repair we quote in Fort Worth includes the NFPA 211 Level 2 camera inspection, a written scope with photos, and the 365-Day Done Right Promise. We warranty the installation for one year and the part for 10. No work starts until you have the price in writing, Clause 1 of the Haven Standard.

DIY or Call Us?

You can safely check three things from the firebox: whether the handle moves smoothly, whether the plate opens and closes fully when you operate it, and whether you see rust or gaps at the edges. Do not attempt to remove or adjust the damper assembly yourself. The plate sits at throat level, often above arm’s reach, and the frame is secured with masonry anchors that require proper support to avoid dropping debris down the flue. More importantly, a misaligned replacement blocks the flue partially, which pushes carbon monoxide back into the house and creates a chimney fire risk from restricted draft. The camera doesn’t lie, and neither does the written estimate. Call (682) 499-2712 and we’ll show you exactly what failed before anyone picks up a tool.

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