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 Boyle Heights, CA | Walnut Chimney
We provide independent Gelco chimney cleaning and repair across Boyle Heights, working on the original 1920s – 40s brick and terra-cotta chimneys that define this hillside neighborhood. What makes our Gelco work different here is that we don’t just sweep flues: we assess seismic-era masonry, spot cracked clay-tile liners hidden behind stucco, and fit the right cap or damper for a high-fire-severity zone. Walnut Chimney is not manufacturer-affiliated or authorized by Gelco. Our credibility comes from the volume of hands-on Gelco systems we service in Boyle Heights every month and from knowing exactly what these older flues do when the Santa Anas start blowing. Call (855) 341-3461 for a free estimate.

Why Boyle Heights Residents Choose Us for Gelco Service
Most of the Gelco chimneys in Boyle Heights are original to the house: clay-tile liners set in 1920s and ’30s masonry, behind stucco that has been patched and painted over for the better part of a century. You can’t sweep a flue like that as if it were a modern stainless system. Russ Dempsey, our owner, grew up off Amar Road in Walnut and has been working flues in the San Gabriel Valley for going on two decades. He trained through the HVAC program at Citrus College and spent his early years doing fireplace retrofits on the older ranch homes scattered across the valley before focusing exclusively on chimneys. That background is why our approach to Gelco service in Boyle Heights starts with understanding the original structure, not just running a brush. We keep OEM Gelco liners, caps, and dampers in stock for common fits, and when OEM sizing doesn’t exist or doesn’t make financial sense, we say so plainly and use quality aftermarket components that match the flue. We also sell and service Gelco equipment through our full Gelco sales & service line. Boyle Heights homeowners call us because we can assess, clean, reline, and cap in one visit, without referring follow-up work to another contractor.
Styles & brands we work with





Common Gelco Chimney Cleaning Problems We Solve in Boyle Heights
- Cracked clay-tile liner joints on original 1920s Gelco flues. These flues were built with short clay tile sections joined by mortar, and after 80 to 100 years of heating and cooling, the mortar fails first. The tell is a faint sulfurous draft smell in the living room when the Santa Anas blow. We camera-inspect before we ever recommend a reline, so you see the crack yourself.
- Failed mortar joints and spalling brick at the crown. Boyle Heights crowns that have never been repointed since the 1930s let water into the masonry. Repeated wet-dry cycles in our hot, dry summers pop the brick face. We repoint and rebuild crowns before the damage works its way down the wythe.
- Separated or collapsed liner sections after decades of brief-but-heavy winter fireplace use. Boyle Heights doesn’t run fireplaces for five months a year like colder climates. Homeowners burn hard for a few weeks during the winter rains, which creates intense thermal cycling. Old liner joints separate and creosote and heat reach the surrounding framing. A Level 2 inspection catches this before a fire does.
- Missing or rusted-through spark arrestors and unscreened caps. This hillside sits in a high-fire-severity zone at the edge of the LA River basin hills. Ember-resistance requirements here aren’t optional. Many Gelco caps we see are original or have screens rusted completely out. We fit screened, ember-resistant caps that actually meet current code for this zone.
- One flue now serving multiple units in a subdivided bungalow. A 1920s Gelco chimney built for a single-family home may now vent several apartments. That changes the inspection scope and the safety stakes. More on this below, but the short version: we inspect shared flues for cross-unit leakage and overloading that a routine sweep would miss.
Gelco Service in Boyle Heights: What Local Conditions Mean for Your Equipment
Here’s the local insight that changes how we work on Gelco chimneys in Boyle Heights, and it’s something you won’t find on a generic brand page. Many of the bungalows and Spanish Colonial homes in this neighborhood have been subdivided or converted to multi-family use over the decades. A single 1920s flue that once served one fireplace may now vent several units, with dampers added, removed, or altered by different owners across different decades. That means a routine sweep isn’t enough. We need to confirm each unit’s flue path is intact, that shared masonry hasn’t been compromised by multiple small fires burning simultaneously, and that any Gelco liner still has the diameter and draft to handle what’s actually connected to it now. The blocks off Cesar Chavez and Soto are full of these converted properties. On one job, our crew opened a 1920s Gelco clay-tile flue in a Spanish Colonial bungalow after the owner noticed a faint sulfurous draft every time the Santa Anas picked up. The Level 2 camera run found cracked tile joints hidden behind stucco. We relined with a Gelco stainless kit, repointed the crown, and set a screened spark-arrestor cap. No more draft smell, and the fireplace went back into service before the winter rains. That’s the kind of assessment and repair this housing stock requires.
Gelco Models & Products We Service in Boyle Heights
We work on the full range of Gelco equipment found in Boyle Heights, including stainless steel flexible chimney liner kits, original clay-tile liner systems from the 1920s – 40s, Gelco chimney caps and multi-flue caps, and Gelco fireplace dampers and top-sealing damper assemblies. Our parts approach is straightforward: we fit OEM Gelco liners, caps, and dampers wherever the existing flue can take them, and we use quality aftermarket stainless and clay-tile components only where OEM sizing doesn’t exist or the cost can’t be justified. We stock common Gelco liner diameters and cap sizes for faster turnaround on Boyle Heights jobs. If a flue is sound, we reline and repoint rather than replace. If the masonry is spalling through the wythe, we’ll tell you rebuilding is the only safe path, and we’ll show you the camera footage that proves it.
See the difference
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After
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AfterGelco Service Pricing in Boyle Heights
Every Gelco chimney is different, especially in Boyle Heights where the original build dates vary by decades and the level of past maintenance is all over the map. A basic sweep on a single-flue Gelco system typically runs at the lower end of the market, while a Level 2 camera inspection, full reline, crown repointing, or cap replacement moves the price up based on the flue height, access, and condition. The condition of your stucco and the age of the original liner are the two biggest cost drivers in this neighborhood. Your free estimate includes a visual assessment, a clear explanation of what we found, and a written quote before any work begins. We never recommend relining or rebuilding without camera evidence you can see for yourself. Call (855) 341-3461 for an exact quote. Estimates are free.
Serving Boyle Heights, CA — Our Local Coverage Area
We’re based in the Boyle Heights area and also provide East Los Angeles Gelco service, so we 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 Boyle Heights
That sulfurous draft smell is usually cracked or separated clay-tile liner joints in an original 1920s – 40s Gelco flue, hidden behind the stucco. When Santa Ana winds press against the house, they push flue gases back through those cracks and into the living space. The fix is a Level 2 camera inspection to confirm the damage, then a stainless reline. If you’re smelling it, call (855) 341-3461 and we’ll get a camera in there.
Yes, significantly. A single 1920s Gelco flue that now serves multiple units carries a different inspection scope than a single-family flue. We check each connected unit’s flue path, look for cross-unit leakage, and confirm the liner and cap can handle the combined load. This is one of the most common situations we find in Boyle Heights and nearby areas, including properties needing Maywood Gelco service, and it requires more than a routine sweep. Call us for a detailed walkthrough of what a converted multi-family flue needs.
Yes, and it’s not an upsell. Boyle Heights sits in a high-fire-severity zone at the edge of the LA River basin hills, and the surrounding hills create real wildfire exposure during hot, dry Santa Ana conditions. A screened spark arrestor on your Gelco cap is a code requirement in this zone, not a recommendation. We check arrestor condition on every Boyle Heights job, as well as on Gelco repair in Commerce, and replace rusted or missing screens with ember-resistant caps. Call (855) 341-3461 to schedule a cap inspection.
Yes, in most cases. We run a stainless Gelco liner kit down the existing clay-tile flue without opening the wall. The camera run first confirms the flue interior is in shape to accept a liner. If the surrounding masonry is too far gone, we’ll tell you rebuilding is required, but the majority of Boyle Heights reline jobs happen from the top down with no stucco removal. The estimate includes the camera footage so you can see exactly what we’re working with.
Once a year, even if you only burn during the brief winter rainy season. Boyle Heights fireplaces see heavy use for a few weeks, then sit dormant through the hot, dry summer. Creosote from those intense burns hardens and cures in the flue during the heat, which makes it harder to remove and more flammable. An annual sweep plus a quick visual inspection catches cracks and cap damage before the next burn season. Call (855) 341-3461 to book your sweep.
Service Areas Near Boyle Heights
Our Boyle Heights Gelco service area includes the surrounding neighborhoods and nearby cities where we see the same early-20th-century housing stock and hillside fire-zone requirements. We regularly work in Garden Grove, Midway City, Westminster, Anaheim, and Fountain Valley. If you’re outside Boyle Heights proper, you may also want to see our Gelco service in Coto De Caza and our Gelco service in East San Gabriel. Full details on the neighborhoods we cover are on our Boyle Heights service area page.
Book Your Gelco Service in Boyle Heights Today
If your Gelco chimney hasn’t been inspected recently, or if you’re noticing draft smells, cap rust, or masonry cracks on the crown, call us — we also handle Gelco service in Bell. We’ll give you a straight answer, a camera-backed diagnosis, and a fair quote. Reach Walnut Chimney at (855) 341-3461.
Written by Russ Dempsey, Owner at Walnut Chimney, serving Boyle Heights and the San Gabriel Valley.