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 Tustin, CA | Walnut Chimney
We clean, inspect, and repair Gelco fireplaces and inserts across Tustin as an independent service provider, not a factory-authorized shop. We also serve customers seeking Gelco in North Tustin. That distinction matters: we’ll tell you honestly whether your Gelco insert needs a $40 gasket or a full rebuild, with no brand quota pushing us toward a recommendation. The difference in Tustin comes down to your house. A 1958 ranch off West Main Street and a 2002 Tustin Ranch build have completely different flue systems, and Gelco equipment behaves differently in each. Call (855) 341-3461 and we’ll figure out which one you have.

Our Gelco work begins with Tustin’s split housing stock, because that’s what actually determines what your chimney needs. We’ve pulled Gelco inserts from mid-century brick fireplaces that hadn’t been fired in twenty years, and we’ve serviced factory-built Gelco gas inserts in 92782 homes where clearances are tight and seals fail more predictably. Walnut Chimney also handles Gelco sales & service for cap replacement, damper repair, and refractory panel work. For the full picture of our service footprint, see our Tustin service area page.
Why Tustin Residents Choose Us for Gelco Service
Russ Dempsey, our owner, has been working flues in the Walnut area for going on two decades, and he learned the fundamentals of sheet metal and venting through the HVAC program at Citrus College before focusing exclusively on chimneys. That background matters when you’re diagnosing a Gelco insert: the firebox, the flue collar, the draft path, and the cap all have to work as one venting system, not four separate parts.
We carry OEM Gelco gaskets, dampers, and refractory panels where the part is still in production, and we use spec-matched aftermarket hardware only when OEM isn’t available. If you’re in Old Town Tustin with a decorative fireplace that’s finally getting used again, we can usually get the parts we need without a long wait. If we can’t, we’ll tell you that too, along with what a rebuild actually costs versus what your unit is worth.
One call covers the sweep, the inspection, and any repair we find. No referrals to an outside contractor for the follow-up work. If the flue’s clean and the draft is right, everything else takes care of itself.
Styles & brands we work with





Common Gelco Chimney Cleaning Problems We Solve in Tustin
- Gasket and glass-door seal failure on Gelco gas inserts in Tustin Ranch. In 92782, many Gelco inserts sit in tight-clearance factory-built frames where seals harden and crack from long dry seasons. A failing seal doesn’t just leak heat. It lets combustion byproducts spill into the room instead of venting up the flue. We see this most often on the first cold night when a homeowner who hasn’t touched the fireplace since February fires it up and notices a smell.
- Rusted flue collars and stuck dampers on Gelco wood inserts. Tustin’s mild Mediterranean climate means months of zero use between Santa Ana wind events. Parts that sit idle in dry heat develop surface corrosion that binds moving components. On older Gelco wood inserts in 92780 ranch homes, we routinely find dampers frozen in place and flue collars that need wire-brushing and reseating before the unit drafts correctly.
- Packed soot and nesting debris in Gelco-cap-screened flues. The long dry season in Tustin lets dust and fine soot accumulate inside screened caps, and birds don’t discriminate between a masonry chimney and a factory-built Gelco flue. The first cold-snap fire pushes all of it down into the insert or, worse, restricts draft so smoke backs into the room. A camera inspection shows the blockage in minutes.
- Cracked and spalled refractory panels on dormant Gelco inserts. Old Town Tustin has a pattern we don’t see as often in newer Irvine builds: a Gelco wood insert that was decorative-only for decades, then suddenly pressed into regular service. The refractory panels inside the firebox dry out, crack, and sometimes spall when finally exposed to real heat. Owners don’t know until we pull the insert and show them the photos.
- Clay-tile liner deterioration behind Gelco inserts in 92780. Many 1950s ranch homes in Tustin still have original clay-tile flue liners, and those liners have been settling for seventy years. Hairline cracks behind a Gelco insert let heat and gases reach the surrounding masonry. It’s not a Gelco-specific failure, but it compromises how safely and efficiently that Gelco insert operates.
Gelco Service in Tustin: What Local Conditions Mean for Your Equipment
Here’s what this page would tell you that no generic chimney site will: Old Town Tustin’s 1950s ranch homes often still carry original clay-tile flues with hairline settling cracks and literally zero sweep history. Many owners use the fireplace only a few evenings a year, so the job is almost never a soot load. If you need Gelco repair in Santa Ana, we handle that too. It’s a first-ever inspection of a dormant flue that’s been collecting dust, nesting debris, and structural damage since before most of us were born. That changes how we approach every Gelco cleaning call in 92780. We’re not rushing through a standard sweep. We’re running a Level 2 camera inspection through a system that may never have been examined, behind a Gelco insert that may never have been pulled. The dust and debris often hide cracked mortar joints and damaged clay tiles that only show up on camera. In Tustin Ranch’s 92782 homes, it’s the opposite problem: newer prefabricated systems with tight clearances where the gelco unit gets used lightly but the seals and gaskets deteriorate from disuse. Two zip codes, two entirely different service calls.
Gelco Models & Products We Service in Tustin
We service Gelco direct-vent gas fireplace inserts, factory-built wood-burning fireplace inserts, multi-flue chimney caps, and vented gas log sets. If your unit has a model number we don’t recognize, we’ll still take a look. Most Gelco inserts share common gasket, damper, and refractory panel designs, and we keep the frequently-needed OEM parts on hand for faster Tustin turnaround. We also stock parts for Irvine Gelco service calls. For caps and hardware, we use spec-matched replacements when the original Gelco part is no longer manufactured.
See the difference
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AfterGelco Service Pricing in Tustin
Gelco chimney cleaning and inspection in Tustin typically runs between $179 and $349, depending on what we’re looking at. A standard Level 1 sweep and visual check on a regularly-used insert sits at the lower end. A Level 2 camera inspection behind a decades-idle Gelco unit in Old Town, with the insert pulled and the flue fully documented, runs higher because it’s a more involved job. Repairs are quoted separately: gaskets, dampers, refractory panels, and caps each have their own costs, and we’ll show you photos of anything we recommend before you spend a dollar. Call (855) 341-3461 and we’ll give you an honest estimate for your specific house, not a generic range.
Serving Tustin, CA — Our Local Coverage Area
We’re based in the Tustin 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 Tustin
The smell is almost always a hardened or cracked gasket and glass-door seal on your Gelco insert. Months of dry Tustin heat cause the seal material to shrink and crack, and on the first cold night, combustion byproducts that should vent up the flue leak past the failed seal into your living room instead. It’s not dangerous in most cases, but it means the seal needs replacement before the unit should be used again. We can confirm the culprit with a quick inspection. Call (855) 341-3461 to schedule one.
Sometimes yes, sometimes no. A camera inspection tells us what we’re working with. Hairline cracks from settling are common in 92780 ranch homes, and minor damage can often be addressed with a resurfacing product without a full rebuild. Significant spalling or missing tile sections behind a Gelco insert usually mean a new liner is the right call. We’ll show you the camera footage and let you make the decision based on what you can actually see.
For Tustin’s light, sporadic fireplace use, annual cleaning is overkill for most homes. What you actually need is an annual inspection, especially if you’re in an older home with a clay-tile flue that’s never been properly examined. A Gelco insert that sees action only during a few Santa Ana wind evenings each winter accumulates minimal creosote, but disuse brings its own problems: nesting debris, dust, deteriorating seals, and mortar cracking. We’ll tell you plainly whether your insert needs a sweep this year or just a look. Call (855) 341-3461 and describe your setup.
A factory-built Gelco insert is a manufactured appliance with specific gasket, damper, and refractory panel tolerances, and the clearances in Tustin Ranch’s prefabricated frames leave less room for error. A masonry fireplace is a structural system. The inspection is different because the failure points are different: on a Gelco insert we’re checking seals, door fit, and panel condition against the manufacturer’s original design, not just looking for soot and creosote like you would in a brick fireplace.
Yes. If your Gelco cap is rusted, damaged, or missing, we install spec-matched replacements that fit the exact flue dimensions of your chimney, whether it’s a masonry clay-tile flue in 92780 or a factory-built metal flue in 92782. We stock a range of cap sizes for faster Tustin turnaround, and if the exact Gelco part has been discontinued, we’ll source a compatible cap that meets the same spec.
Service Areas Near Tustin
Beyond Tustin, we provide Gelco service in Garden Grove, Midway City, Stanton, and Westminster. If you’re in a neighboring community, see our Gelco service in Buena Park and Gelco service in Los Alamitos pages for location-specific guidance.
Book Your Gelco Service in Tustin Today
If you’ve got a Gelco insert in Tustin that hasn’t been inspected or cleaned properly, or you need Gelco repair in Orange, call (855) 341-3461. We’ll schedule a time that works, show up with the right parts for your specific unit and house, and give you a straight answer on what it needs.
Written by Russ Dempsey, Owner at Walnut Chimney, serving Tustin and the surrounding communities.