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 Altadena, CA | San Bernardino Chimney Sweep
We’re San Bernardino Chimney Sweep, and we provide independent Gelco chimney cleaning and repair across Altadena. That means we work on Gelco clay flue tile liners, dampers, caps, and fireplace inserts without being tied to Gelco as a manufacturer. What makes our Gelco work different in Altadena is the tree canopy: oak and pine debris clogs caps and flues here faster than almost anywhere else in the San Gabriel Valley, so a routine cleaning here often uncovers blockages other cities simply don’t see. Call (877) 516-7159 for a free estimate.

Why Altadena Residents Choose Us for Gelco Service
We know Gelco systems because we’ve opened hundreds of them in Altadena’s pre-war and mid-century homes. The clay flue tiles in these older chimneys behave a certain way under heat, and the damper assemblies have specific failure points we can spot before they leave you with a smoking fireplace. Allen Prescott, our owner, has spent most of three decades working Inland Empire chimneys and still explains every finding the same way he would to a neighbor on Kendall Drive: here’s what’s wrong, here’s what it means, here’s what actually needs doing now versus what can wait.
That independence matters. We’re not a Gelco dealer. We’re not going to push a replacement unit when a targeted repair fixes the problem. We stock OEM Gelco dampers, caps, and liner components where they’re available, and we use aftermarket parts that meet or exceed original spec when OEM is discontinued or priced unreasonably. We’re an independent Gelco service provider, not a manufacturer affiliate. We also handle our full Gelco sales & service work with the same repair-first mindset: find it, fix it, and don’t invent work.
If you live in Altadena, you’re in our regular service rotation, and our Altadena service area coverage includes both 91001 and 91003.
Styles & brands we work with





Common Gelco Chimney Cleaning Problems We Solve in Altadena
Here’s what we actually find when we open a Gelco system in Altadena. These aren’t generic complaints; they’re the failure patterns tied to this town’s specific conditions.
- Clay flue tile cracks from thermal stress. Altadena’s foothill climate gives you cool nights and hot days, and when a fireplace gets real winter use, the temperature swings put uneven stress on Gelco clay flue tiles. Creosote buildup from frequent fires makes it worse because the heat doesn’t spread evenly. A Level 2 inspection with a camera catches these cracks before they become a fire and carbon monoxide risk.
- Seized or rusted Gelco dampers. Heavy tree canopy holds moisture against the chimney, and the marine influence that drifts up from the coast adds more. Gelco damper assemblies rust and seize under these conditions, which means poor draft and smoke spilling into the room. Last fall we responded to a call on East Altadena Drive where a rusted-open damper was the culprit behind a smoking fireplace.
- Gelco caps clogged by oak leaves, pine needles, and twigs. Santa Ana winds in Altadena fill a chimney cap with debris in a single afternoon. When the cap is blocked, exhaust can’t leave, and animals see an invitation. During that same East Altadena Drive call, the Gelco cap was completely packed with debris. A mid-season cap cleaning is normal maintenance here, not an overcharge.
- Mortar joints spalling and crumbling. Repeated wetting from rain and dew, plus shade that slows drying, breaks down the mortar in Gelco brick chimneys. The result is spalled joints and loose brick. We repair these with contractor-grade materials, and we tell you plainly when the masonry can wait versus when it’s a structural concern.
- Animal nests inside the flue. Oak and pine canopies mean squirrels, raccoons, and birds have easy access to Altadena rooftops. A missing or damaged Gelco cap is an open door. We remove nests during a sweep and install the right cap so it doesn’t happen again.
Gelco Service in Altadena: What Local Conditions Mean for Your Equipment
Altadena sits at the foot of the San Gabriel Mountains and is one of the few communities in the valley that’s genuinely forested. Native oaks, pines, and cedars create constant fuel and debris, and that changes what Gelco chimney cleaning actually means here. A chimney in Pasadena getting Gelco repair might get an annual sweep and be fine. A chimney in Altadena with a tree canopy overhead can clog before the first cold snap even arrives, because the leaf and pine-needle fall is year-round and Santa Ana wind events dump fresh debris into flues weekly. The mid-season cleaning is the standard move. If you wait for the “annual” schedule, you’re often a month too late. Technicians working here operate in a wildland-urban-interface zone too, so we’re thinking about ember risk and proper spark arrestors on caps, not just creosote removal.
Gelco Models & Products We Service in Altadena
Our team works on the full range of residential Gelco equipment found in Altadena homes: clay flue tile liners, stainless steel chimney caps, damper assemblies, and fireplace inserts. For dampers and caps, we source OEM Gelco parts when they’re available because the fit and longevity are worth it. When OEM is discontinued or the price doesn’t make sense, we use aftermarket components that meet or exceed the original spec. We stock common Gelco parts for fast turnaround on Altadena jobs, so a damper replacement or cap installation doesn’t become a two-week wait. Creosote removal and cap installation are part of our standard Gelco service set, and we perform Level 2 inspections when a camera look inside the flue is warranted.
See the difference
Before
After
Before
After
Before
AfterGelco Service Pricing in Altadena
A Gelco chimney cleaning with us costs between $180 and $340 in Altadena, depending on access, the amount of creosote present, and whether we’re also clearing a blocked cap or animal nest. Repair work, like a damper replacement or clay flue tile repair, gets quoted separately after we see the condition. A free estimate includes the camera inspection when needed, so you see exactly what we see before you approve any work. The honest repair-versus-replace assessment is standard on every Gelco job, and many chimneys that look bad from the outside need targeted repairs, not a full rebuild. Call (877) 516-7159 and we’ll give you a straight quote.
Serving Altadena, CA — Our Local Coverage Area
We’re based in the Altadena 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 Altadena
At least once a year, but in Altadena’s tree canopy, many homes need a mid-season cleaning as well. Oak leaves, pine needles, and Santa Ana debris clog Gelco caps and flues faster here than with Gelco service in East Pasadena, so an annual schedule often misses the blockage that appears in late fall or early winter. If you burn regularly, check the cap after high winds. Call (877) 516-7159 and we’ll help you figure out the right interval for your specific tree exposure.
Smoke spilling into the room, a fireplace that won’t draw, a smell of old smoke when the fire’s out, and visible debris or nesting material on the cap from the ground. In Altadena, a clogged Gelco cap after a Santa Ana event is the most common culprit we find. If you see any of these, stop using the fireplace until the cap is cleared. Call (877) 516-7159 and we’ll inspect and clear it.
Yes, in many cases. A cracked clay flue tile doesn’t always mean a full rebuild. We use HeatShield resurfacing to reline and seal cracked tiles, which restores the flue without tearing out the chimney, and we also install DuraFlex flexible liner systems for relining when that’s the better option. The right call depends on how many tiles are cracked, where they are, and how the chimney is built. We’ll show you the camera footage before recommending anything.
We don’t offer waterproofing as a standalone service. Our focus is chimney sweeping, chimney repair, and dryer vent cleaning. What we do address is the damage Altadena’s rain and moisture cause to Gelco brick chimneys: spalled mortar joints, rusted dampers, and loose brick. We repair those with contractor-grade materials so the chimney stays sound, but we won’t sell you a waterproofing package. If a chimney needs work outside our three core services, we’ll tell you plainly and suggest the right specialist.
Don’t try to smoke them out or remove the nest yourself. A nest inside a flue is a fire and carbon monoxide hazard, and trapped animals can die inside the chimney. Call us at (877) 516-7159. We’ll remove the nest, sweep the flue, and install a proper Gelco cap with a spark arrestor so the chimney is sealed against re-entry.
Service Areas Near Altadena
Our team also covers Gelco service in Artesia and Gelco service in Hawaiian Gardens, along with nearby communities across the San Gabriel Valley and Inland Empire. If you’re in Rubidoux, San Bernardino, Colton, Muscoy, Loma Linda, or Rialto, we can schedule a Gelco chimney cleaning or repair at your home as well.
Book Your Gelco Service in Altadena Today
If your Gelco fireplace hasn’t drawn right since the last windstorm, or you’re overdue for a sweep before burning season, call (877) 516-7159 today. We’ll schedule your Altadena service, walk you through what we find, and fix what needs fixing, without inventing work you don’t need. A clean flue isn’t a luxury, it’s just how you keep the fire where it belongs.
Written by Allen Prescott, Owner at San Bernardino Chimney Sweep, serving Altadena and the Inland Empire.