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.
Before
After
Before
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Before
AfterWhy Leesburg Homeowners Choose Gelco Chimney Cleaning
We provide independent Leesburg Gelco service including chimney cleaning and repair throughout Leesburg, VA, with factory-compatible parts stocked for same-visit completion on most Gelco prefab fireplaces and inserts. Our sweeps know the difference between a Gelco zero-clearance box from the 1990s and a millivolt gas insert from the 2000s, and we carry the refractory panels, dampers, and cap assemblies those specific units need. We are not affiliated with, authorized by, or endorsed by Gelco. We are an independent chimney service that happens to know these products well. Call (571) 701-7519 to schedule.
Leesburg presents a unique challenge for our Chimney Cleaning & Sweep services. One morning we might be in Old Town working on a pre-1900 masonry flue in a Federal brick home, and that afternoon we’re across town in Potomac Station or River Creek diagnosing a Gelco prefab fireplace that has reached its 25-year service window. The humid summers here accelerate mortar spalling, and the heavier snow and wind off the Blue Ridge foothills drive real creosote accumulation in wood-burning units. A sweep who only knows new construction will miss what ails an older Gelco. We’ve seen both for over 42 years.
Tell me what you are burning and how often, and I can tell you what your chimney looks like before I even climb up.
Why Trust Hearthstone Chimney Co. for Your Gelco Chimney Cleaning?
Russell Haines, our owner, learned this trade at Los Angeles Trade-Technical College before heading east and building a career around masonry and chimney work. He has spent the better part of two decades serving homeowners across Leesburg, including the older colonials along the streets near Morven Park where chimneys get heavy use every winter. That background matters when we’re looking at a Gelco unit. The factory-built boxes and inserts require a different eye than traditional masonry. You need someone who understands steel flue runs, refractory panel clearances, and millivolt control systems, not just a brush and a rod.
Our technicians are background-checked and uniformed, and most Gelco jobs are completed in a single visit because we stock the parts. Every inspection includes a Level 2 camera examination with photos you can see and a plain-English verdict. We document like engineers and explain like craftsmen. The 90-Day Done Right Promise covers every job in writing with no arguing. If it’s not right, we make it right. That’s been our standard since 1984.
We work exclusively with professional-grade materials from DuraFlex, HeatShield, Gelco, Olympia Chimney, Famco, and Copperfield. No builder-grade substitutes. When we replace a Gelco damper or cap, the part matches the unit and the installation follows manufacturer clearance specifications, even though we are an independent service provider with no manufacturer affiliation.
Common Gelco Chimney Cleaning Problems We Fix in Leesburg
- Cracked or spalled refractory firebox panels on older Gelco prefab boxes. These panels are designed to reflect heat back into the firebox and protect the steel shell. When they crack or spall, the steel behind them is exposed to direct heat. In Leesburg, we see this often in original Gelco units from the 1980s and 1990s that came with the first wave of Loudoun County development. The damage starts small, a hairline crack in the rear panel, and grows with thermal cycling. We match replacement panels to the unit or source quality aftermarket equivalents when OEM parts are discontinued. This is not a cosmetic issue. Left alone, it can compromise the firebox integrity.
- Corroded or seized dampers and rusted damper handles. Gelco factory-built fireplaces rely on metal dampers that sit in a hostile environment, hot and acidic. After fifteen or twenty years of Leesburg winters, they freeze open or the handle snaps off. A damper that won’t close costs you heated air up the flue every day you’re not burning. A damper that won’t open risks smoke spillage into the room. We free, document, and replace these with matched assemblies that seal properly.
- Chimney caps and top-sealing assemblies rusted through on Gelco flue terminations. The galvanized or stainless caps on Gelco flue runs take the worst weather the Blue Ridge foothills can deliver. Once water gets past the cap, it runs down the flue, mixes with creosote, and accelerates corrosion of the steel flue liner and any mortar in the chase. We see this in Lansdowne and Stratford Club homes where the original cap has simply aged out. Replacement with a properly sized cap stops the water intrusion and protects the flue.
- Loose or crumbling mortar and spalling brick on exterior chases serving Gelco factory-built systems. The chase is the framed and brick-veneered structure that houses the steel flue. Its mortar is not structural in the same way as a masonry chimney, but it is the only water barrier the flue has. Leesburg’s freeze-thaw cycles and humid summers open mortar joints and spall brick faces. Water enters the chase, saturates insulation, and rusts the steel flue from the outside in. We repair chase mortar and replace damaged brick to restore that barrier.
- Millivolt control and glass door assembly issues on Gelco gas inserts. The pilot assemblies, thermopiles, and glass gaskets on these units have finite lifespans. A weak thermopile won’t hold the gas valve open. A degraded gasket leaks combustion gases into the room. These are precision components, and replacement requires knowing the specific control system your insert uses. We carry the common millivolt parts and test every gas insert for proper draft and spillage after service.
Gelco Parts & Our Repair-vs-Replace Approach
We stock Gelco-compatible dampers, refractory panels, chimney caps, gaskets, and millivolt controls at our warehouse, which means most Leesburg homeowners don’t wait for parts to ship. When OEM Gelco parts are still available, we source them. When they’ve been discontinued, which is common for 1980s and 1990s units, we use quality aftermarket components from professional-grade suppliers like Copperfield and Olympia Chimney that meet or exceed original specifications.
Our rule is simple. We tell you straight when a repair is worth doing and when it is not. New refractory panels, a damper, and a cap can safely extend an older Gelco prefab for years. But if the steel firebox shell is warped or the flue liner is corroded through, replacement is the honest recommendation. Nothing gets pushed. Nothing gets padded. You’ll see the camera photos and hear the plain-English verdict before any work is approved. Call (571) 701-7519 for an exact quote on your unit.
Our Gelco Service Process - Step by Step
- 1
Diagnosis with Level 2 inspection. We run a camera up the flue and photograph the firebox, damper, flue liner, and termination. For Gelco units, we specifically check refractory panel condition, steel flue joint integrity, and cap fit. You see the photos. We explain what they mean.
- 2
Repair or install with matched parts. We use Gelco-compatible or OEM-matched components for the specific model and year of your unit. No universal-fit shortcuts. Clearances and assembly specs are followed precisely, even though we are an independent provider.
- 3
Testing and safety verification. Wood-burning units get a draft test and smoke-puffer check. Gas inserts get combustion analysis and spillage detection. The damper cycles through its full range. The cap is checked for secure fit.
- 4
Documentation and warranty. You receive photos, a written verdict, and the 90-Day Done Right Promise in writing. If anything we touched isn’t right, we come back. No paperwork to file, no argument.
Gelco Products We Service & Install in Leesburg
We work on Gelco Heat-N-Glo-style factory-built wood fireplaces and inserts from 1980s through 1990s construction, Gelco zero-clearance prefab fireplace boxes with refractory panels and steel flue runs, and Gelco gas and gas-log inserts with millivolt controls and glass door assemblies. We stock refractory panels, dampers, caps, gaskets, and millivolt components for fast turnaround in Leesburg and for Purcellville Gelco service throughout surrounding Loudoun County. If you are unsure of your model, the data plate inside the firebox or on the unit frame will tell us what we need to know.
We Also Service These Brands
Our technicians are factory-trained on multiple product lines. We also service and install DuraFlex chimney liner systems and HeatShield cerfractory flue resurfacing products, along with Olympia Chimney, Famco, and Copperfield components. This matters because many Leesburg homes have mixed systems, a Gelco insert in a site-built chase, or a DuraFlex liner retrofit inside an older flue. One crew that knows the full stack saves you from coordinating multiple contractors.
FAQs - Gelco Chimney Cleaning Service in Leesburg
No. We are an independent chimney service provider with no affiliation, authorization, partnership, or warranty endorsement from Gelco. We service Gelco products based on hands-on experience and factory-compatible parts, not manufacturer certification. Our 90-Day Done Right Promise covers our workmanship in writing.
We use OEM parts when they are still available for your model and year. For discontinued Gelco units, which includes many 1980s and 1990s prefabs, we source quality aftermarket components from professional-grade suppliers like Copperfield and Olympia Chimney that match original specifications. We explain what we’re using and why before any work begins.
Most Gelco cleaning and minor repairs are completed in a single visit of two to three hours because we stock common parts. Larger repairs like refractory panel replacement or chase mortar work may require a return visit. We give you a clear timeline when we present the estimate, and we show up when we say we will.
We service Gelco Heat-N-Glo-style factory-built wood fireplaces and inserts, zero-clearance prefab boxes with refractory panels, and gas inserts with millivolt controls, including Gelco repair in Berryville. If you have a data plate or model number, that helps us confirm parts availability before we arrive. Call (571) 701-7519 and we can check compatibility.
Any factory warranty on a Gelco unit is governed by Gelco’s terms and is not affected by our independent service, though we cannot extend or enforce manufacturer warranties. For older units, the original warranty has typically expired. Our 90-Day Done Right Promise covers our workmanship separately, in writing, with no arguing.
A standard Gelco chimney sweep and Level 2 inspection in Leesburg typically runs $89 to $250 depending on access, condition, and whether repairs are needed during the same visit. Refractory panel replacement, damper work, or cap replacement are additional and quoted upfront. We offer $50 off any repair over $250, a permanent 5% senior and veteran discount, and free second opinions on any written estimate. Call (571) 701-7519 for an exact quote on your specific unit.
Yes. Gelco prefab units have smaller flue diameters and tighter bends than masonry chimneys, requiring flexible rods and appropriately sized brushes. The refractory panels also limit how aggressively we can clean. We carry the specialized brushes and rods for Gelco steel flue runs, and we inspect the panels for stress after sweeping.
Usually yes. A cracked refractory panel exposes the steel firebox shell to direct heat and can lead to warping or penetration over time. Small surface crazing may be monitorable, but any through-crack or spalling requires replacement for safe operation. We photograph the damage and show you exactly what we’re seeing before recommending replacement.
Some Gelco wood-burning prefabs can accept a gas insert or log set, but the unit must be evaluated for compatibility, clearances, and venting capacity first. We do not recommend conversions that exceed manufacturer specifications or create unsafe venting conditions. A Level 2 inspection determines whether your specific unit is a candidate.
The National Fire Protection Association recommends annual inspection for all chimney systems, and we agree for Gelco prefabs given their steel flue and refractory panel construction. In Leesburg, where units see real winter use and humid summers accelerate corrosion, an annual Level 2 camera inspection catches panel cracks, flue rust, and cap failure before they become hazardous.
Yes. We diagnose and repair millivilot pilot assemblies, thermopiles, gas valves, and glass door gaskets on Gelco gas inserts. These are not generic components. Each control system has specific voltage requirements and safety interlocks. We test and replace with matched parts, then verify proper combustion and draft before calling the job complete.
Book Your Gelco Service in Leesburg, VA
A live person answers our phones 24 hours a day, 7 days a week. No voicemail, no callback queue. Call (571) 701-7519 to schedule your Gelco chimney cleaning, inspection, or repair in Leesburg. We’ll give you upfront pricing, show you what we find, and stand behind the work with the 90-Day Done Right Promise in writing. Done right, and we stand behind it.
Written by Russell Haines, Owner at Hearthstone Chimney Co., serving Leesburg since 1984.