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 Fireplace Services in Rockville: What to Know First
We service Gelco fireplaces throughout Rockville, Maryland as an independent Gelco service provider, with most diagnostics and repairs completed within one visit. You’ll get an upfront price before any tool comes off the truck, and every job is backed by our 90-Day Done Right Promise in writing. If you own a Gelco unit and it’s not firing right, making an odd noise, or leaving soot where it shouldn’t, call (240) 716-5865 and tell us what you’re seeing. This page is for Rockville homeowners who want straight answers about their Gelco fireplace without the runaround.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
How Gelco Products Fail, and How We Fix Them
Gelco made a lot of units, and over the years we’ve seen the same patterns repeat themselves in Rockville homes. Here’s what actually goes wrong, and what we do about it.
- Standing pilot won’t stay lit on older Gelco gas logs. This is usually a thermocouple or thermopile that’s coated in dust and pet hair, or a pilot assembly that’s simply tired. On Gelco units from the late 90s and early 2000s in neighborhoods like Twinbrook, we often find the pilot tube partially clogged. We clean the assembly first and only replace the part if it won’t hold a reading. No reason to sell you a new gas valve when the fix is a $40 thermocouple.
- Burner lights but flames are lazy and yellow on Gelco vented logs. That’s typically clogged burner ports or a blocked air shutter. In Rockville, where humidity runs high in summer and dust finds its way into everything, the air shutters on Gelco burners collect a fine layer of grime that chokes the gas-air mix. The flames go soft, soot starts collecting on the logs, and the fireplace looks worse than a campfire. We pull the burner, brush the ports, adjust the shutter, and test the flame pattern against Gelco’s original specs.
- Remote control or wall switch stops firing the unit. Before you assume the worst, check the batteries, then look at the receiver box. On many Gelco models the receiver sits under the firebox where heat and a dead battery have done their work. We bench-test the receiver and the remote separately. If it’s dead, we use aftermarket receivers that are drop-in compatible and cost about half what an OEM Gelco part runs, without voiding anything that still matters.
- Glass sooting up within a few fires on Gelco direct-vent models. The usual suspect is improper log placement, and this is one we see constantly. A log shifted a half inch can block the flame and create a soot path that fogs the glass in two evenings. We reset the logs to the exact position Gelco specifies, inspect the gasket around the glass, and verify venting draw before we call it done.
- Odd smell on first use each season. Dust and dead insects settle inside the burner and on the logs over the summer months. When you light it in November, that’s what you smell. It’s not a gas leak in most cases, but any smell like rotten eggs should be treated as an emergency, not a nuisance. Have us check it. A seasonal cleaning with compressed air and a proper brush solves the dust smell; a leaking gas connection is a different conversation entirely, and one you want to have before burning season starts.
Our Gelco Fireplace Services Process
- 1
Call us at (240) 716-5865. A live person answers, day or night. It might be Wendell himself. You tell us the model number if you can find it on the rating plate, and what the fireplace is doing or not doing.
- 2
We show up inside the appointment window. In uniform, background-checked, with the truck stocked for Gelco work. No trip charge inside our service county.
- 3
We diagnose, not guess. Gas pressure, thermocouple millivolts, venting draw, log placement, and gasket integrity all get checked before we touch a part. Then we tell you what we found and what it costs, in plain English, before we start.
- 4
We decide together on parts. When a genuine Gelco part makes sense, we use it. When a quality aftermarket part does the same job for less money, we tell you and let you choose. No mystery markup, no “trust us” pricing.
- 5
We fix, test, and document. After the repair we run the unit through a full cycle, photograph the finished work, and note anything to watch over the next season. You get a written explanation, not just a receipt.
- 6
90-Day Done Right Promise. If something’s not right after we leave, one call brings us back. In writing, on every job.
What Gelco Fireplace Services Cost in Rockville
In Rockville, a Gelco fireplace service call typically runs $149 to $289 depending on what’s actually wrong. A standard cleaning and inspection, including log removal and burner brush-down, is usually $179. Replacing a failed thermocouple or thermopile usually lands between $120 and $240 installed, depending on the part and whether we already have it on the truck (we usually do). A new aftermarket receiver for an older Gelco remote system runs $135 to $190; a new OEM remote set can push past $300, and we’ll tell you which one makes sense before you spend a nickel. Full burner replacement on an older Gelco unit can hit $400 to $700, and honestly, that’s often money better put toward a new insert. If it doesn’t need doing, we’ll tell you. Call (240) 716-5865 for a free estimate.
Why Rockville Homeowners Call Top Hat Chimney for Gelco Work
We’ve been crawling around Rockville fireplaces since 1999, and we’ve seen enough Gelco units in Twinbrook, Rockshire, and the older streets off West Montgomery Avenue to know which models hold up and which ones are running on borrowed time. Wendell Pike puts his name on the work and his face in the community; he’ll be at the hardware store on Saturday and he’ll remember your fireplace. Our techs know Gelco’s quirks because they’ve repaired hundreds of them, and because we also work with DuraFlex and HeatShield on liner and rebuild jobs, we understand your fireplace as a complete system, not one brand in isolation. We answer our own phone, we show up when we say we will, and the price we quote is the price on the invoice. If it doesn’t need doing, we’ll tell you.
FAQs
No. Using an independent service provider for normal maintenance does not void a manufacturer’s warranty, and that’s true for Gelco as it is for nearly every major brand. What voids warranties is improper installation or failure to perform required maintenance. We honor manufacturer specs and document everything, so if you ever do need a warranty claim, you’ll have the records to back it up.
Some genuine Gelco parts are still available for common replacement items like thermocouples, thermopiles, and pilot assemblies, but many original parts for units from the 1990s and early 2000s are discontinued. For those we use drop-in compatible aftermarket parts that match the originals in fit and function, usually at a lower cost. We’ll always tell you which route we’re recommending before any part is ordered or pulled from the truck.
In most cases we can be there within three to five business days, and during the late fall and early winter we keep extra slots open in Rockville because that’s when most people discover their fireplace won’t light. When it’s an urgent gas odor or suspected leak, we prioritize it and make room the same day. Call (240) 716-5865 and we’ll work you in.
That depends on the age and the failure. If it’s a thermocouple, pilot assembly, remote receiver, or dirty burner, repair almost always makes sense and costs a few hundred dollars or less. If the firebox itself is cracked or the burner is rotted through on a unit that’s 20-plus years old, replacement is often the smarter long-term call. We’ll show you what we see and let you decide with honest numbers, not pressure.
Written by Wendell Pike, Owner, Top Hat Chimney at Top Hat Chimney, serving Rockville and nearby areas.





Before
After
Before
After
Before
After