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.
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Before
AfterFamco Flue Liner Replacement: The Fairfax Owner’s Guide
A Famco flue liner replacement in Fairfax, VA typically runs $2,400-$4,800 installed, depending on liner diameter, flue height, and whether the old liner comes out clean or fights you on the way up. We stock Famco-compatible liners on our trucks and can usually complete the swap in a single visit.
Most Fairfax homeowners learn their Famco liner has failed one of two ways: a chimney inspection flags it before closing on a house, or they notice flaky rust-colored bits collecting in the firebox. Either way, the conversation starts the same: is it the liner itself, or is it the connector pipe, the cap, or something else? Our camera answers that before anyone touches a tool.
Which Famco Models This Applies To
Famco manufactures flue liners and connector components under several product lines. In Fairfax homes from the 1980s through early 2000s, we mostly see Famco’s Type B gas vent liners and their flexible stainless steel chimney liner kits marketed for oil-to-gas conversions and wood-burning fireplace relines. These liners typically range from 4-inch to 8-inch diameter in residential flues, with 6-inch being the most common size we pull out of Fairfax chimneys.
Identifying your liner: look for the embossed manufacturer stamp near the top or bottom section. If the stamp is corroded away, we measure the inside diameter and verify against the appliance BTU rating. That matters because a mismatched diameter is a common compatibility gotcha. A 6-inch Famco liner paired with a furnace rated for a 5-inch vent will draft poorly, condense, and rot in half the time. Aftermarket equivalents from DuraFlex and HeatShield can match Famco specs when an OEM section is discontinued, but not every aftermarket liner mates cleanly with an existing Famco top plate. We stock both OEM Famco sections and tested aftermarket equivalents, and we tell you which one your setup actually needs. We’re an independent service provider in Fairfax, not a Famco affiliate, which means we quote you the part that fits, not the part that pads a brand contract.
Signs Your Famco Flue Liner Replacement Is Failing
- Rust flakes in the firebox or at the cleanout door. This is the classic first signal. Stainless steel liners develop pinholes at the seam welds first, and those pinholes shed rust scale that collects where you can see it. By the time flakes appear, moisture has been working on the liner for a while.
- A drifting or smoky draft that was fine last season. A liner that is separating at a seam or developing internal collapse changes the flue’s effective diameter. The draft weakens, smoke rolls back into the room on startups, and a gas appliance that used to vent cleanly starts setting off a CO detector.
- White or chalky staining on the exterior masonry near the flue. Condensation inside a failing liner migrates through the flue tile and into surrounding brick. In Fairfax’s freeze-thaw winters, that moisture spalls the brick face and leaves mineral haze that looks like someone painted the chimney with watered-down chalk.
- You can smell exhaust inside the house on humid days. Fairfax summers are humid, and moisture loads the flue. A compromised Famco liner lets combustion gases seep backward through the mortar joints. If you smell gas exhaust or woodsmoke when the fireplace is cold, the liner has lost its seal.
- The camera shows flattened or kinked sections. Older Famco flex liners with thin wall construction can deform under chimney weight shifts. In the clay soil areas around Fairfax and Fairfax Station, foundation settling translates into subtle chimney movement. We see liners that look dimpled, pinched, or outright torn.
BeforeAfterReplacement Cost & What’s Included
| Fairfax Famco Liner Replacement | Typical Range |
|---|---|
| 4-inch gas vent liner, single story flue | $2,200-$2,900 |
| 6-inch liner, two-story flue (most common) | $2,800-$4,100 |
| 8-inch liner, taller or harder-access flue | $3,600-$5,400 |
| Top plate, cap, and connector replacement (if needed) | $180-$520 added |
What drives the range in Fairfax: flue height (two-story colonials near the Government Center corridor run longer liners than ramblers in Mantua), access (roof pitch and chimney crown condition), and whether the old liner disintegrates on removal or slides out in one piece. Every quote includes the liner, top plate, cap, connectors, removal of the old liner, installation, a camera re-scan after the job, and a written warranty. The price you get in writing is the price you pay. Clause 1 of the Haven Standard: written price, written scope, written warranty, before anyone starts.
DIY or Call Us?
What an owner can safely do: check the firebox for rust flakes, snap photos of any staining, and note the appliance BTU plate so we can verify sizing. That helps us quote accurately over the phone.
What we would not recommend doing yourself: pulling a liner. Flue liner replacement means working on a roof, often steep, often in Fairfax weather, and you’re maneuvering a stainless steel snake down a masonry channel you can’t see behind. Tears happen at the clay tile lips. A kinked liner is a draft failure waiting for a cold night. Liner work is not like swapping a furnace filter. We have watched a homeowner drop $900 on a liner kit and spend a weekend on a roof, only to call us because the draft got worse. The camera tells you what the chimney is; the written quote tells you what the fix costs. Everything else is just conversation. Call us at (571) 443-8256 and we will send a tech who does this particular job every week in Fairfax.
FAQs
A Famco stainless liner in Fairfax typically lasts 15-20 years with regular use, shorter if the flue sees heavy moisture or the liner was originally sized wrong. Gas appliance liners in condensing situations can fail in under a decade. We document the liner’s condition on camera so you know where yours falls on that curve.
Small pinhole leaks at connector joints can sometimes be addressed with a proper mechanical repair, but a liner with seam separation, kinking, or corrosion across more than a third of its length should be replaced, not patched. We will show you the camera footage and explain plainly when a repair can safely wait. If you want that assessment, call (571) 443-8256 for an estimate.
Most Famco liner replacements in Fairfax take 3-5 hours on site, including setup, removal, installation, sealing, and the post-job camera re-scan. Two-story chimneys with difficult roof access add time. We schedule a single-day visit for most liner swaps.
Yes. Our Fairfax trucks carry 4-inch, 6-inch, and 8-inch Famco-compatible liner sections, top plates, caps, and connectors, along with equivalent DuraFlex and HeatShield parts. If you need a size we don’t have on hand, we source it through the Haven buying network and return within days, not weeks.
Get Your Famco Liner Replaced in Fairfax
If your Famco flue liner is failing, you want two things: a straight answer about whether it actually needs replacement, and a written number for what it costs. We provide both. We have inspected and cleaned more than 38,000 chimneys since 2009, every one with a written price before work started and a documented photo record when it was done. Bring us any competitor’s written estimate and we will give you a free second opinion. Call (571) 443-8256 to schedule your camera inspection and written quote.
Written by Corrine Halstead, Owner, Level Two Chimney Fairfax at Level Two Chimney Fairfax, serving Fairfax and nearby areas.