Gelco Flue Liner Replacement Nationwide

Gelco Flue Liner Replacement: The Arlington Heights Owner’s Guide

We stock and install Gelco-compatible flue liner replacement in Arlington Heights, with typical installed pricing from $2,800 to $5,200 depending on liner diameter, flue height, and whether the chimney chase needs resealing. Most Gelco liner jobs we book in Arlington Heights are completed in a single day, and we carry common Gelco diameters on our trucks for homes near Rand Road and the older neighborhoods off Arlington Heights Road. The camera doesn’t guess. Neither do we.

Call (331) 202-2419

Most Arlington Heights homeowners discover their Gelco flue liner is failing during a routine sweep, or when they notice water staining on the firebox after the freeze-thaw cycles we get every February. The liner is hidden, so damage usually progresses until a Level 2 inspection with a camera scan finds it.

Which Gelco Models This Applies To

Gelco manufactured several flue liner series over the decades, and the part you need depends on what’s currently in your chimney. We most commonly replace Gelco’s 316Ti stainless flexible liners in Arlington Heights homes built between 1965 and 1995, particularly the 5.5-inch, 6-inch, and 7-inch diameters used in the split-levels and raised ranches near Euclid Avenue. If your liner was installed before 2010, check the top termination for a stamped Gelco label or a part number starting with “GFL” or “GS.”

Here’s how to tell what you’re working with:

• Measure the liner diameter at the thimble or cleanout, not the flue tile opening. Gelco flex liners run true to nominal size, but clay flue tiles often measure 1/2 inch larger than labeled.
• Check the termination cap for a Gelco stamp or model tag. If the cap is aftermarket, the liner itself may still be Gelco original.
• Look for corrosion patterns at the waterline. Gelco’s pre-2005 liners used a different seam weld than their current production, and they fail differently near the smoke chamber.

We source replacement liner through Haven’s buying network from Gelco directly, or from Olympia Chimney when the original spec is discontinued. Both carry the same 20-year warranty when we install them. Level Two Chimney Arlington Heights is an independent service provider, not affiliated with Gelco.

Signs Your Gelco Flue Liner Replacement Is Failing

• Water stains on the firebox floor or hearth extension. Gelco liners seal at the top termination and bottom thimble; when either seal degrades, Arlington Heights’ driving rains get in. We see this most in homes without a cricket on the chimney slope.
• White efflorescence or spalling brick inside the firebox. This means flue gases are leaking through liner gaps and condensing in the chimney cavity. The salts pull moisture through the masonry, and in our freeze-thaw climate the face brick pops off by spring.
• Strong smoke odor when the fireplace is not in use. A compromised Gelco liner loses draft, especially in the tall, narrow chimneys common in the Campbell Street colonials. Cold air sinks, bringing creosote smell with it.
• Visible rust flakes in the cleanout or at the damper. Gelco’s 316Ti resists acid corrosion well, but if the original installer used a galvanized connector or skipped the insulation wrap, the liner corrodes from the outside in.
• Your home inspector flagged “recommend Level 2 inspection.” In Arlington Heights resale transactions, this is now standard language when the flue liner age is unknown. We’ve done hundreds of these pre-closing scans; about 40% find liner damage that would have cost the buyer $4,000+ after move-in.

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Replacement Cost & What’s Included

What drives the range: liner diameter, total linear feet, whether we need to remove a deteriorated existing liner first, and if the chimney chase top needs rebuilding. Every Arlington Heights job gets a written price before work starts, with the scope itemized line by line. No exceptions. The 365-Day Done Right Promise applies to all liner work, and we document the completed installation with photos under Haven Standard Clause 4.

DIY or Call Us?

There’s a safe middle ground, and then there’s where DIY ends.

You can safely check: whether your damper opens fully, whether water is pooling in the cleanout, and whether the termination cap is intact after windstorms. Use a flashlight, not your hands. Document what you see with photos.

Where DIY goes wrong: pulling a flue liner is not a homeowner job. The liner is under tension, the chimney cavity may contain loose refractory, and working at roof height on Arlington Heights’ typical 8/12 and steeper pitches is genuinely dangerous. More critically, a liner installed without proper insulation clearance to combustibles creates a fire hazard that won’t show up until it’s too late. NFPA 211 requires specific clearances that vary by chimney construction, and Arlington Heights inspectors enforce them.

We carry common Gelco diameters on our Arlington Heights trucks, and Corrine Halstead assigns a named technician to every liner job. You’ll get a text when they’re en route, and a written warranty when the job is done. Call (331) 202-2419 for a free estimate.

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