Sweep & inspection
Caps & crowns
Flue relining
Masonry repair
Gas fireplace serviceLevel 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 Sweep in Fresno: What to Know First
A Gelco chimney sweep in Fresno typically costs between $189 and $329 for a standard open-hearth fireplace, depending on flue height, creosote load, and whether the firebox needs the same visit. We’re an independent Gelco service provider – not a manufacturer-authorized shop – but our technicians work on Gelco fireplaces and stoves every week across the city. If you own a Gelco and haven’t had the flue swept in two or more years, this page covers what Fresno’s hard-water air and hot-cold swing actually do to your specific unit, what we check while we’re in it, and what a fair price looks like before you call.
This page is written for homeowners in Fresno, Clovis, Madera, and the surrounding foothill towns who own a Gelco fireplace or stove and want straight answers from a company that doesn’t upsell wall liners you can’t see or “emergency” work that isn’t. Call (559) 215-1714 and you’ll get a person, not a queue.
How Gelco Products Fail – and How We Fix Them
Gelco made a lot of pre-fabricated fireplaces and stoves that ended up in Fresno homes built between roughly 1988 and 2012. They’re generally solid units, but every brand has failure patterns that show up as callbacks. Here’s what we actually see when we open one up:
- Gelco direct-vent fireplaces with rusted firebox floors. We commonly see Gelco 36DV and 42DV models in Fresno homes off of Bullard and Herndon where the firebox floor has rusted through under the burner pan. What happens: the firebox floor is thin cold-rolled steel, and when the flue collar isn’t sealed correctly at install, moisture from combustion condenses on the floor instead of drafting out. The symptom is a fireplace that lights but won’t stay lit, or a smell like a musty basement every time the blower kicks on. The fix: we clean the flue first because creosote around the termination cap is what backs up the condensation in the first place, then we replace the floor pan with a proper gauge aftermarket part. A new unit isn’t required, which is what a lot of Fresno homeowners are told by outfits that want to sell one.
- Gelco wood-burning prefab models with warped refractory panels. Gelco’s pre-2005 wood burners used refractory concrete panels that were rated for much shorter fire durations than most Fresno families actually run. When the panels warp, the fire burns hotter in one spot and overheats the metal chase behind the firebox. We see this regularly in older Tract 2400 and Sierra foothill homes where people burn oak all winter. During a sweep, we will flag a hairline crack before it becomes a firebox breach. We won’t tell you to replace a functioning panel if the crack is cosmetic, but we will show you a photo and mark it for the next inspection.
- Gelco stoves with plugged secondary air tubes. This one’s specific: Gelco’s wood stoves, especially the smaller insert-style units, route secondary combustion air through small-diameter stainless tubes along the top of the firebox. In Fresno’s dry winters, dry hardwood burns fine, but people who burn almond or walnut prunings – very common fuel around Selma and Kerman – get a lot of fine ash that clogs those tubes within a season. The stove still works, but it stops producing the clean secondary burn, and the homeowner notices the glass blackening fast. A standard sweep doesn’t fix this. We pull the tubes, clean them with a rod brush, and recheck the door gasket while we’re at it. If you’re burning nut crop prunings, tell us on the phone; we’ll plan extra time.
- Gelco gas log sets with insect-blocked burners. In Fresno, spiders and wasps are a year-round problem, and Gelco’s gas logs have venturi tubes that bugs love to nest in. The symptom is a lazy orange flame on one side or a burner that won’t light at all. We clear the burners as part of every Gelco fireplace cleaning, and we’ll sweep the flue even on a gas unit because carbon monoxide doesn’t care what fuel you burn. A gas fireplace collecting soot on the glass is often telling you the flue is partially blocked, not that the gas pressure is wrong.
- Gelco termination caps that bird-nest in Fresno’s fall shoulder season. Every spring and fall, we pull nests out of Gelco terminations all over northeast Fresno and the foothills. Swallows and starlings get into the cap before the first cold snap, and the first fire of the season pushes smoke right back into the living room. The Gelco cap’s spark screen is broader than most, which is good for embers but bad for nests. We can replace the cap with a bird-guarded version that fits the Gelco flue collar exactly, or we can just clean and keep yours if it’s intact. You’ll know which one after we get on the roof and look.
Styles & brands we work with





Our Gelco Chimney Sweep Process
Here’s how a Gelco chimney sweep works when you call Alcott Chimney Fresno, from the first call to the final test:
- 1
You call (559) 215-1714. A live person answers. We ask about your fireplace: wood or gas, how often you burn, when the last sweep happened, and what you’re seeing – black glass, smoke blowback, or a smell. If Ruben’s line you hear: “Tell me what you’re seeing and I’ll tell you what it actually means.”
- 2
We schedule and send the technician’s name and photo before the day of the visit. Our technician arrives in uniform with a photo ID badge that matches the name you were given. No exceptions. The truck is marked Alcott Chimney Fresno.
- 3
The sweep itself. We lay drop cloths, run a rotating rod brush up through the flue, and vacuum from the firebox using a high-volume HEPA-rated filter. On a Gelco, we pay special attention to the smoke shelf and the damper throat – Gelco’s damper shelves sweep shallower than some brands, which lets creosote pile up faster there.
- 4
We inspect the firebox, damper, cap, and visible flue liner during the sweep. We’ll photograph anything notable: cracked refractory panels, rusted floors, small holes in the liner, bird nests we removed. You see the photos before anyone recommends a repair. If we recommend work, you decide with the photo in hand.
- 5
We leave the firebox and hearth clean. No soot on the carpet, no creosote dust in the room. We bag what we pull out and haul it away the same day. If we found a repair point, we quote it in writing before we leave – same visit, no return trip for an estimate.
- 6
Every repair we do is covered by our 365-Day Done Right Promise. If a repair we perform fails within a full year, the second visit is free. That’s in writing, handed to you with the invoice. No fine print, no “normal wear and tear” carve-out on parts we installed.
See the difference
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After
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AfterWhat Gelco Chimney Sweep Costs in Fresno
A standard Gelco open-hearth fireplace sweep in Fresno typically runs $189 – $329. That covers the full flue brush, the firebox vacuum-out, the damper inspection, and the cap check. Here’s a breakdown of the common scenarios we quote daily:
- Standard sweep, no repairs, straightforward flue: $189 – $239
- Sweep plus Gelco gas log burner clearing and flue check: $219 – $289
- Sweep plus creosote removal from a heavily glazed flue (Stage 2 or 3): $289 – $379
- Sweep plus bird nest removal and termination cap replacement: $249 – $329 depending on cap size
- Sweep plus firebox floor pan replacement (rust-through): $450 – $700 all-in, including the sweep
What moves the price: how tall your roof is (a two-story chase above a single-story living room costs more to ladder), how heavy the creosote load is, and whether the firebox needs real cleaning or just a vacuum-out. The price is always in writing before any work begins, and if we see something during the sweep that needs a repair, the repair quote is separate and optional. You never commit to anything on the spot. Call (559) 215-1714 and describe your fireplace; we’ll give you a real number for your specific Gelco before we roll a truck.
Why Fresno Homeowners Call Alcott Chimney Fresno for Gelco Work
Fresno has no shortage of chimney sweeps, but most of them don’t write down what they’ll charge before they start, and almost none of them tell you who’s coming to your door. Ruben Castellano built Alcott Chimney Fresno specifically because opening your home to a stranger is not a small thing. Every technician we send is background-checked and identity-verified through the Threshold Standard – that’s the same vetting process used across the Threshold Group companies since 2002. You’ll know the technician’s name and see their photo before we arrive, and they’ll show a photo ID before stepping inside. That’s not a premium service. It’s the only way we’ve ever done it.
On the Gelco side, our techs have been inside enough of these units across Fresno to know what a clean one looks like and what a failing one sounds like. If a Gelco floor pan needs replacing but the flue is fine, we’ll tell you that. If your flue liner is shot and a HeatShield resurfacing is the right call, we’ll show you the camera footage and explain why. And if your liner is beyond resurfacing, we install DuraFlex systems. We’re brand-loyal to performance, not to selling one fix for every problem. Every repair carries our 365-Day Done Right Promise, and the written quote comes before any tool leaves the van.
FAQs
A Gelco chimney sweep in Fresno runs $189 – $329 for the basic flue and firebox service, with repairs quoted separately and only after you’ve seen photos of what’s wrong. The price is in writing before any work starts. Call (559) 215-1714 for a quote specific to your fireplace.
We use the right part for the job, not the part with the highest margin. If your Gelco unit is still under an active manufacturer warranty, we’ll recommend OEM-compatible parts and document the install so your warranty stays intact. For out-of-warranty units – most Gelcos in Fresno are well past it by now – we use high-quality aftermarket parts that meet or exceed the original spec. We’ll tell you which we recommend and why before anything is bought.
Once a year if you burn wood through the winter, and once every two years at minimum for gas logs. Fresno’s dry air and temperature swings create small draft shifts that can drop more creosote onto Gelco’s shallow smoke shelf than you’d get in a coastal climate. Annual sweeps keep the firebox metal from rusting early and give us a chance to catch a small issue before it becomes a $700 repair.
Yes, and we’ll show you exactly what we’re seeing before you decide. If a repair is needed, we photograph it, quote it in writing, and tell you plainly whether the fix will last another five years or whether replacement is the financially honest move. We don’t sell new fireplaces, so there’s no reason for us to push a replacement when a repair is sound.
Most Fresno calls are scheduled within 5 – 7 days during the fall when demand is heaviest, and faster in spring and summer. If you’re smelling smoke or seeing dark staining above the fireplace, our phones are answered live around the clock, and we’ll triage your situation on the spot. We don’t quietly push everyone into next week; if a unit is dangerous, we’ll say so and move the schedule.
Written by Ruben Castellano, Owner, Alcott Chimney Fresno at Alcott Chimney Fresno, serving Fresno and nearby areas.