Gelco Flue Liner Replacement Nationwide

Gelco Flue Liner Replacement: The Olympia Owner’s Guide

We stock and install Gelco-compatible flue liner replacement in Olympia, with typical installed pricing running $2,800-$5,400 depending on flue height, diameter, and whether the top plate and insulation need replacement too. Most Gelco liner jobs we book in Thurston County are completed in a single day once the written price is approved. You’ll usually discover the problem during a sweep when the camera shows gaps, corrosion, or clay tile shards in the flue - or when you notice water staining, draft problems, or a smoky smell that won’t clear.

Call (360) 464-2015

Which Gelco Models This Applies To

Gelco manufactured several flue liner series over the decades, and the part you need depends on when your system was installed and what fuel it serves. The Gelco Ultrastart and Gelco Pro lines were common in the Pacific Northwest from the late 1980s through the mid-2000s, typically in 316Ti stainless for wood-burning and AL29-4C alloy for oil and gas conversions. We also see the older Gelco smooth-wall flex in homes around the Eastside and Westside neighborhoods of Olympia, usually marked with a stamped band near the top connector.

To identify yours: check the metal tag on the top termination plate, or measure the liner diameter at the thimble (common sizes are 5.5″, 6″, and 8″ for residential Gelco systems in this market). The model series matters because Gelco top plates, adapters, and insulation wraps are not cross-compatible between generations. We source replacement liner through Haven’s buying network from Gelco, Olympia Chimney, and DuraFlex, matching spec for spec. OEM Gelco parts are still available for most series, though we sometimes recommend a DuraFlex equivalent when the original tooling has been discontinued - the alloy spec is identical, and the warranty terms are comparable. We bring both options on the truck and show you the difference before you sign.

Signs Your Gelco Flue Liner Replacement Is Failing

• Water stains on the firebox ceiling or adjacent wall. Gelco top plates in Olympia’s wet climate take a beating from wind-driven rain off Puget Sound. The plate seal degrades, water tracks down the flue, and you see rust-colored staining or efflorescence where the liner meets the masonry. Left alone, the water reaches the smoke chamber and starts spalling the brick.
• Draft reversal or smoke spillage on startup. A liner with breached insulation or separated seams can’t maintain flue temperature. In the South Sound’s mild shoulder seasons, this shows up as smoke rolling out the door on the first fire of the evening. The flue isn’t pulling because warm air is leaking through gaps before it reaches the cap.
• Debris or tile fragments in the cleanout. If your original system was clay tile with a Gelco liner retrofit, tile collapse behind the liner is common in homes built between 1960 and 1990 in the Capitol Lake and South Capitol areas. The debris blocks the air gap and can force combustion gases through mortar joints.
• Visible corrosion or pinholes on the liner wall. We catch this on camera during Level 2 inspections. Gelco 316Ti resists acid well, but sustained moisture exposure from a failed crown or missing cap will pit any alloy. Pinholes in the lower third of the flue usually mean condensation damage from an oversized liner on a modern, efficient appliance.
• Carbon monoxide detector alerts during heating season. This is the one that gets our phone ringing at odd hours. A breached liner can vent CO into wall cavities or the living space. If your detector chirps and the appliance is oil or gas with a Gelco liner, stop using it and call us.

Before

After

Replacement Cost & What’s Included

Gelco flue liner replacement in Olympia runs $2,800-$5,400 installed, with most jobs clustering around $3,600-$4,200 for a standard single-flue chimney up to 25 feet. The range breaks down like this:

What drives the high end: two-story flue runs over 30 feet, terra cotta removal before liner insertion, or switching fuel types (oil to gas requires AL29-4C, not 316Ti). We deliver a written price before work starts, Clause 1 of the Haven Standard, and every liner job carries a written warranty plus our 365-Day Done Right Promise. The photo record, Clause 4, documents the full flue condition before and after - you’ll see what we saw.

DIY or Call Us?

You can safely check three things: whether the top cap is present and secured, whether the cleanout door opens and closes, and whether your CO detector tests properly. Beyond that, flue liner replacement involves working at height, handling sharp stainless edges, and correctly sizing combustion air - mistakes vent carbon monoxide or create chimney fire conditions.

We’ve been called to correct DIY liner jobs in the Lacey and Tumwater areas where the liner was pushed down uninsulated, or where the top plate was sealed with generic silicone instead of high-temp sealant. Both failed within two seasons. The camera goes in first. Everything else follows from what it finds. Call (360) 464-2015 and we’ll schedule a Level 2 inspection with written pricing - no charge for the estimate, and a free second opinion if you already have a written quote from another company.

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