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 Cleaning in La Palma, CA | Walnut Chimney
We provide independent Gelco chimney cleaning and service across La Palma, and the one thing that sets our Gelco work here apart is the block-by-block pattern of aging we see. Most La Palma homes went up between 1965 and 1975, so the original Gelco caps, dampers, and insert assemblies are reaching end-of-life together. If your fireplace hasn’t been swept since you moved in, call (855) 341-3461 for a free estimate.

Walnut Chimney works on Gelco inserts, stoves, and aftermarket door assemblies every week in this part of Orange County. We’re an independent service provider, not affiliated with or authorized by Gelco, which means our recommendations are based on what your flue actually needs, not a warranty quota. For the full picture on our company’s work with this equipment line, see our Gelco sales & service page.
Why La Palma Residents Choose Us for Gelco Service
Most chimney companies in Orange County can sweep a flue, including those who handle Gelco in Cerritos. Fewer know what to do when a Gelco millivolt pilot won’t stay lit or a builder-era damper assembly has rusted shut after twenty years of disuse. We see those exact problems on La Palma’s 1960s and 1970s tract homes constantly, so we’re familiar with the specific assemblies Gelco spec’d on those installs.
Russ Dempsey, our owner, grew up off Amar Road in Walnut and has been working flues in this area for close to twenty years. He spent his early years doing fireplace retrofits and cleanouts on older ranch homes across the San Gabriel Valley and Gelco in Cypress before focusing exclusively on chimneys, and that background shows in how we diagnose a problem. We’re also not a one-trick sweep company: our same crew handles chimney sweeping, dryer vent cleaning, and chimney repair, so if a Gelco inspection turns up a venting issue or a failing cap, we can address it without referring you to a different contractor.
We stock common aftermarket thermocouples, thermopiles, gaskets, and glass-door hardware sized for Gelco units, which keeps turnaround quick for La Palma service calls. When OEM or NOS parts are what a customer wants for an original insert, we’ll hunt them down.
Styles & brands we work with





Common Gelco Chimney Cleaning Problems We Solve in La Palma
- Millivolt standing-pilot inserts that won’t stay lit. This is the single most common Gelco call we run in La Palma. After decades of light, occasional use, the thermocouple and thermopile wear out, and the damp coastal-influenced winters accelerate corrosion on the pilot assembly. Usually it’s a parts replacement, not a new fireplace.
- Original Gelco dampers and hinges seized or rusted shut. La Palma’s mild, damp winters mean fireplace use is sporadic, and a damper that hasn’t been opened in years can fuse into place. We free and lubricate what’s salvageable and tell you directly when a damper assembly is structurally gone.
- Cracked or spalled refractory panels in Gelco insert fireboxes. On inserts that were used heavily in their first decade and then ignored, the firebox panels break down. We inspect for panel damage during every Gelco cleaning and flag it early, before a cracked panel compromises the unit.
- Deteriorating gaskets on Gelco glass door frames. The glass bi-fold doors on older Gelco inserts lose their seal over time, and once air leaks around the glass, combustion efficiency drops and smoke can spill into the room. We replace gaskets sized to the door frame.
- Rust-through on builder-era Gelco caps and spark arrestors. La Palma’s original 1970s caps are failing in clusters. Rain and roof rats get into the flue, and the same failing cap style repeats down entire blocks. We replace caps with Gelco and Famco components matched to the existing flue dimensions.
Gelco Service in La Palma: What Local Conditions Mean for Your Equipment
La Palma is almost entirely built out with tract homes from a single window: roughly 1965 to 1975. The city incorporated in 1955 and filled in fast, and that means something specific for Gelco owners here. The caps, dampers, spark arrestors, and insert assemblies on La Palma fireplaces are aging on the same clock because the entire housing stock went in at once.
We see this play out on La Palma’s tight residential streets all the time. The lots are small, the rooflines are close, and when one original 1970s cap rusts through, the houses on either side usually have the identical failure within a year or two. Once we replace one rusted cap on a block, neighbors on either side typically find theirs is next. On a block of single-story stucco tract homes off Walker Street, we pulled a rusted-through Gelco-era spark arrestor and cap off a 1970 fireplace that had been letting rain and a rat nest into the flue, similar to the Gelco repair in Buena Park we handled. The damper hinge was seized and the crown had a hairline crack. We swept the flue, freed and lubricated the damper, installed a new multi-flue cap, and coated the crown. The two neighbors who watched us work both turned out to have the same failing cap style.
If you live in La Palma and haven’t had the flue inspected since you moved in, the odds are good that your chimney is on that same timeline. See the streets and communities we work across on our La Palma service area page.
Gelco Models & Products We Service in La Palma
We work on the Gelco equipment that La Palma’s 1965-to-1975 housing stock actually contains. That includes standing-pilot millivolt gas fireplace inserts common in 1970s and 1980s tract installs, wood-burning Gelco fireplace inserts with glass bi-fold doors, and Gelco freestanding wood stoves. We also service Gelco aftermarket fireplace glass door and screen assemblies, which many La Palma homeowners added years after the original build, much like our Hawaiian Gardens Gelco service customers.
Our parts approach is straightforward: we use quality aftermarket thermocouples, thermopiles, gaskets, and door hardware matched to Gelco dimensions, and we go after OEM or new-old-stock parts when keeping an original unit alive matters to a customer. When a heat exchanger or firebox panel is cracked, or a damper assembly is structurally gone, we say so plainly instead of patching it twice.
See the difference
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AfterGelco Service Pricing in La Palma
Gelco chimney cleaning in La Palma typically runs between $180 and $340 for a standard sweep, depending on flue condition and whether the insert needs disassembly for a proper cleaning. A straight sweep on a lightly used La Palma fireplace is at the lower end. Add a Level 2 inspection, which we often recommend on first-time calls for 1970s homes, and you’re looking at additional cost based on what’s found. Cap replacement runs $250 to $450 depending on the flue style, and common pilot assembly repairs on Gelco inserts sit in the $120 to $260 range plus parts.
What drives the price is the condition of the equipment. A Gelco insert with a rusted damper, a spalled firebox panel, and a clogged flue takes longer to service safely than a well-maintained one. Our free estimate includes a camera inspection, and you’ll see photos of anything we recommend. Call (855) 341-3461 for an exact quote for your La Palma home.
Serving La Palma, CA — Our Local Coverage Area
We’re based in the La Palma 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 La Palma
It’s almost always a fireplace problem, specifically a worn thermocouple or thermopile in the millivolt standing-pilot system, and it’s one of the most common Gelco issues we handle in La Palma. The damp winters here accelerate corrosion on the pilot assembly, and after decades of light use the part simply wears out. We’ll diagnose it on-site, replace the correct part, and verify the flue is drafting properly. Call (855) 341-3461 to book an inspection.
If we’re just doing a routine sweep and nothing has changed with the system, a Level 1 inspection is usually sufficient. But if you’ve never had the chimney inspected since you bought the house, or you can see rust on the cap or dampness around the firebox, a Level 2 inspection makes sense for La Palma’s original 1970s chimneys. It includes a camera scan of the flue interior, which catches hairline cracks and hidden deterioration before they become structural problems.
Because La Palma’s tract homes went up within a decade of one another, roughly 1965 to 1975, and the builder-era caps and spark arrestors on those houses are all reaching end-of-life at the same time. Once one cap on a block rusts through, the adjacent homes usually have the same failure within a year or two. The mild sea air carries enough moisture to keep the corrosion moving, and roof rats take advantage of any breach. We see entire blocks in La Palma where every other chimney has the same failing cap style.
You usually don’t have to replace the insert. We source aftermarket thermocouples, thermopiles, gaskets, and glass-door hardware matched to Gelco dimensions, and we’ll track down OEM or new-old-stock parts if you want to keep an original unit running with authentic components. The line we draw is safety: if the firebox has a cracked heat exchanger or the damper assembly is structurally gone, we’ll tell you straight that repair money is better spent on a new unit.
No, and here’s why it matters in La Palma specifically. The fireplaces in this city are used lightly and irregularly, which means creosote loads tend to be light, but long-unused flues collect debris, bird nests, and moisture that degrade mortar crowns and seize damper assemblies. A dirty flue is a fire hazard, but an ignored chimney on a 1970s La Palma tract home is also a water intrusion and pest problem. We sweep and inspect together so you know the whole system is sound. Call (855) 341-3461 to schedule.
Service Areas Near La Palma
If you’re just outside La Palma, we run Gelco service calls in nearby northwest Orange County communities too. We work in Garden Grove, Midway City, Stanton, Westminster, Anaheim, and Fountain Valley. If you’re a little further east, see our Gelco service in Villa Park page or our Gelco service in Placentia page for local details.
Book Your Gelco Service in La Palma Today
If your La Palma fireplace hasn’t been swept or inspected in years, the time to look at it is now, before the next Santa Ana event pushes heat and embers into a flue you’re not sure about. Call (855) 341-3461 for a free estimate. We’ll inspect, answer straight, and fix what needs fixing with the right parts for the job. If the flue’s clean and the draft is right, everything else takes care of itself.
Written by Russ Dempsey, Owner at Walnut Chimney, serving La Palma since 2005.