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.
Gelco Chimney Cleaning in Manassas, VA | Level Two Chimney Manassas
We provide independent Gelco chimney cleaning and repair across Manassas, and the one thing that sets our work apart here is how many 30- to 40-year-old Gelco factory-built fireplaces we see failing at the same time. That’s not a coincidence. Manassas built out fast along the Route 28 and I-66 corridors in the late 1980s through mid-1990s, so thousands of Gelco units hit the same age wall together. We do written prices before work starts, camera-scan documentation on every visit, and we stock OEM Gelco parts locally for faster turnaround. Call (571) 946-2300 for a free estimate.
Why Manassas Residents Choose Us for Gelco Service
We’ve spent years running Level 2 camera inspections on Gelco fireplaces throughout Manassas neighborhoods, and we know the failure patterns that show up in this city more than anywhere else. Corrine Halstead, our owner, came up through Queensborough Community College’s vocational program and has two decades of hands-on chimney work behind her. She’s the one who writes findings down before quoting a price, and she calls homeowners herself when a camera shows something that can’t wait. The crew behind her is background-checked, uniformed, and shows up with a named tech and a text before arrival. Clause 1 of the Haven Standard means you get a written price, written scope, and written warranty before anyone touches your fireplace. Clause 4 means a documented photo record on every visit, a practice we’ve had running since 2009.
We’re an independent Gelco service provider, not a manufacturer arm or an authorized dealer. That independence matters when an old Gelco unit is at the end of its service life. If replacement is the honest answer, we’ll say so in writing, with the photos to back it up, and we’ll quote the repair carefully before we recommend anything else.
Common Gelco Chimney Cleaning Problems We Solve in Manassas

- Rusted firebox and collapsed flue sections in EIFS-clad chases. Homes near Sudley Road and the Route 28 corridor frequently have Gelco zero-clearance units wrapped in synthetic stucco that cracked years ago. Water gets into the chase, and by the time we’re called for a cleaning, the firebox is rusted and the inner flue has often separated. This is the single most common Gelco problem we see in Manassas.
- Cracked refractory panels in Gelco WB-30 wood-burning models. These panels absorb heat and release it slowly, but after 30-plus years of Manassas thermal cycling, the hairline cracks become structural. A crack that hasn’t reached the firebox can sometimes be replaced with an OEM Gelco panel. Once it spreads, replacement becomes the safer call.
- Faulty millivolt gas valves and pilot assemblies in Gelco DV-42 direct-vent units. Moisture and dust from the Piedmont’s humid summers and occasional ice storms work into the valve contacts. The symptom is usually a pilot that won’t stay lit or a main burner that refuses to fire. We test the millivolt readings before quoting, so you know exactly what’s failed.
- Deteriorated chase tops and separated flue sections from freeze-thaw cycling. Manassas sits about 30 miles inland at 300 feet elevation, and winter temperatures swing through 32°F repeatedly. That’s harder on chimney chase tops and flue section seals than coastal Virginia’s milder winters. A Gelco chase top that looks fine from the ground can be cracked through when we camera-scan it.
- End-of-service-life Gelco units that need decommissioning or replacement. The 1980s-90s building boom means a spike in Gelco ZC-36 and WB-30 models now 30-40 years old. We’ll tell you plainly when a unit can be cleaned and safely used, and when it shouldn’t be burned again.
Before
AfterGelco Service in Manassas: What Local Conditions Mean for Your Equipment
Here’s the piece that makes Manassas different from Fairfax or Centreville. The subdivisions radiating out from Sudley Road and Route 28 were built with Gelco and similar factory-built fireplaces at the same moment those neighborhoods went up. The chase framing was frequently clad in EIFS synthetic stucco, a material that looked good in 1992 but has since cracked and allowed water to sit against the chase structure. What gets booked as a routine annual Gelco cleaning is, in this city, disproportionately likely to become a major repair or full replacement. We send the camera down the flue before we quote a cleaning because the water entry happens inside the chase where the homeowner can’t see it, and the first visible symptom is sometimes just a fireplace that smokes slightly or a faint rust stain on the firebox floor. The camera tells us which of those cases we’re in.
Gelco Models & Products We Service in Manassas

We service the Gelco model families that were installed in Manassas homes during the expansion decades, including the Zero-Clearance Fireplace Series ZC-36, the Direct-Vent Gas Fireplace Series DV-42, the Wood-Burning Fireplace Series WB-30, and the Fireplace Insert Series FI-24. For safety components like refractory panels and flue sections, we use OEM Gelco parts when they’re available. For routine wear items like gaskets and glass, we install quality aftermarket equivalents that meet or exceed spec. We keep the most common Gelco replacement parts in local stock so a Manassas job doesn’t stall waiting on a distributor. Our relationship with Gelco and other brands runs through Gelco sales & service and the Haven buying network, which keeps customer prices honest.
Gelco Service Pricing in Manassas
A Gelco chimney cleaning in Manassas typically runs $180 to $340 for a standard Level 1 cleaning and inspection. If you need a Level 2 camera inspection, which we recommend for any Gelco unit over 20 years old, expect $350 to $600 depending on flue access and the model’s condition. Refractory panel replacement usually falls between $250 and $600 per panel. A full Gelco zero-clearance replacement, including chase framing repair when water damage has already started, runs $4,500 to $9,000. We give you a written flat-price estimate before any work begins, and that estimate includes the scope, the warranty, and the specific parts we’ll use. Call (571) 946-2300 for a free estimate on your Gelco unit in Manassas.
Serving Manassas, VA - Our Local Coverage Area

We’re based in the Manassas area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Gelco Chimney Cleaning in Manassas
Manassas’s suburban build-out happened mostly between 1985 and 1995 along the Route 28 and I-66 corridors, so most Gelco units in the city were installed during that window and are now 30 to 40 years old. Factory-built fireplaces have a typical service life of 20 to 30 years, so this is the natural end of that curve. The EIFS-clad chases in those neighborhoods have made it worse by letting water reach the firebox and flue. If your Gelco is in this age range, call (571) 946-2300 for a Level 2 camera inspection and we’ll show you exactly what’s happening inside.
A rusted firebox on a Gelco zero-clearance unit means the metal has already lost structural integrity, and that cannot be repaired safely. Surface rust on a small area can sometimes be addressed, but any rust that has pitted through the firebox wall means replacement. We’ll put the camera footage in front of you before we recommend either path, and we’ll quote both options when repair is a real choice. Call (571) 946-2300 and we’ll come look.
Yes, and more than most homeowners realize. EIFS stucco was used widely on the fireplace chases of Manassas homes built in the 1980s and 1990s, and once it cracks, water moves down through the chase and into the Gelco firebox and flue sections. The damage often isn’t visible from the outside, which is why our Level 2 inspection includes not just the flue camera-scan but a check of the chase structure and EIFS condition. If your Sudley Road-area or Route 28-area home has an EIFS-clad chase, it’s worth a check before the next burn season.
A Level 2 inspection for a Gelco factory-built fireplace includes a camera-scan of the entire flue from the firebox to the termination cap, a visual check of the firebox, refractory panels, damper or valve assembly, chase top, and the EIFS or siding around the chase. We document everything with photos and give you a written report with the findings, including measurements, before we quote any work. Clause 4 of the Haven Standard requires the photo record on every inspection, and we’ve done it that way since 2009. Call (571) 946-2300 to book one for your Manassas home.
Yes, we convert Gelco wood-burning fireplaces to gas whenever the underlying firebox and flue are sound enough to support the conversion. For a Gelco WB-30 or ZC-36 that has a cracked refractory panel or a rusted firebox, we’d quote the necessary repairs before the conversion so the finished system is safe. The conversion itself uses a direct-vent insert or gas log set appropriate for your model. Call (571) 946-2300 and we’ll walk you through what your specific Gelco model can support.
Service Areas Near Manassas

We serve Manassas and the surrounding Northern Virginia areas, including Chantilly, Montclair, Fairfax, Reston, and Vienna. If you’re in Chantilly, see our Gelco service in Chantilly page. For Montclair and nearby, see our Gelco service in Montclair page. For everywhere else in the region, see our Manassas service area page for coverage details.
Book Your Gelco Service in Manassas Today
If you have a Gelco fireplace in Manassas that hasn’t been camera-inspected in the last few years, the fall burn season is the time to get it done. Call (571) 946-2300 and we’ll get you on the schedule with a written price before any work starts.
Written by Corrine Halstead, Owner at Level Two Chimney Manassas, serving Manassas since 2009.





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