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.
Fast, Reliable Chimney Sweep Across Altadena
A chimney sweep in Altadena typically runs $180 – $320 for a standard open-fireplace cleaning, and for most homes that’s a same-visit job we can book within a few days. If you’re burning wood regularly in a foothill home, that interval matters more than you might think. Ontario Chimney has worked the streets from Altadena’s 91001 and 91003 zip codes up into the canyon-edge neighborhoods for years, and we know the two things that keep coming back: creosote that builds faster than the valley norm, and Santa Ana debris that packs caps and spark arrestors. Call (833) 467-7685 for a free estimate, and we’ll tell you exactly what we found, show you the evidence, and give you options.
Why Ontario Chimney Is Altadena’s Preferred Chimney Sweep Company
Most of what we do in Altadena is straight brush-and-scope work, but the difference is that we service the whole flue system, not just the firebox. When our tech finishes a sweep, they inspect the cap, crown, flue liner, smoke chamber, and damper. That matters in this housing stock. The original 1910s and 1920s masonry chimneys along streets like Mariposa and Mendocino were built without liners, or with clay tiles that have since cracked under decades of foothill heat cycling. A quick brush alone won’t catch that.
Our Chimney Sweep team carries DuraFlex liner components and HeatShield ceramic resurfacing materials on nearly every Altadena call, because we know that about a third of the older bungalows we open up need more than a sweep. Homeowners near the foothill groves have told us they appreciate that we don’t hand them a tear-out quote the moment we find spalling. Al Vickers, who runs Ontario Chimney, built the crew around the idea that a homeowner deserves to see the camera footage before deciding anything. If the flue can be safely resurfaced, we say so. If it needs a liner, we show you why with the scope, not a sales pitch.
Styles & brands we work with
- Sweep & inspection
- Caps & crowns
- Flue relining
- Masonry repair
- Gas fireplace service
Chimney Sweep Services in Altadena
Chimney Sweep Services in Altadena cover the full mechanical cleaning of your flue, smoke chamber, damper, and firebox, plus a visual check of the cap and spark arrestor. For a standard open fireplace in a craftsman or Spanish Revival bungalow, that job runs $180 – $280. For a wood stove with a liner, expect $220 – $320 depending on flue height and creosote stage. If you live on the canyon edge, factor in that we may recommend a mid-season re-sweep, not because we want repeat business, but because third-degree tar glaze on an unlined flue is a chimney fire waiting for a dry Santa Ana night.
Level 1 and Level 2 Inspections
A Level 1 inspection is part of every sweep and costs no extra. We verify the flue is clear, the damper opens and closes, and there’s no visible cracking at the crown. A Level 2 inspection ($150 – $250 as a standalone in Altadena) uses a camera scope and is what you want when you’ve just bought a house, you’ve had a chimney fire, or you’ve added a gas insert to an older masonry flue. For the 1920s bungalows around the foothill streets, we recommend a Level 2 before the first burn of the season if the chimney hasn’t been scoped in years.

Creosote and Soot Removal
We remove all three stages of creosote: the flaky first-degree stuff, the harder second-degree tar, and the glassy third-degree glaze that forms on flues that run hot and then cool quickly, which is exactly the cycle foothill wood stoves produce. Soot removal alone is rarely the real job in Altadena. The deodar cedar and oak debris that packs caps after a wind event often means the soot trapped behind it gets cooked into something denser, and that requires mechanical brushing, not a vacuum pass.

Chimney Cleaning in Altadena
Chimney Cleaning in Altadena is the physical removal of soot, creosote, nests, leaves, and cap debris from the flue and firebox. For a standard open-fireplace bungalow, that runs $180 – $280. For a two-story Spanish Revival with a taller flue, or a wood stove that hasn’t been cleaned in more than two burning seasons, the range shifts to $250 – $340. We sweep from the firebox up and drop the cap down, then run a camera to confirm. You see the scope footage before you pay, not after.
Annual Sweep and Fireplace Cleaning
For Altadena homeowners who burn only recreational fires on weekends, one annual sweep before the November – March burn window is enough, as long as the flue has a sound liner. We book these as preventive work, and most of our regular customers schedule them for late October. The goal is to catch cap blockage and early-stage creosote before the first cold foothill night, not after the first smoky fire.
Canyon-Edge and Wood-Stove Homes
Up on the streets that climb toward the San Gabriel foothills, wood stoves are often the primary heat source, not ambience. Those flues load creosote faster than anything in the valley. We talk with these homeowners about honest burn practice: seasoned hardwood only, no pine or cedar rounds, and a re-sweep by mid-January if you’re burning every night. It’s not about squeezing you for a second visit. It’s about the simple fact that unlined or lightly lined flues running daily hit a dangerous creosote load in six to eight weeks.
Trusted Brands We Service in Altadena
We work with professional-grade materials because Altadena’s old masonry flues deserve better than box-store parts. On relining jobs, we install DuraFlex stainless steel systems, which handle the offset flues common in 1920s bungalows where a rigid liner simply won’t fit. For flue restoration that doesn’t require a full tear-out, we use HeatShield ceramic resurfacing, applied to the damaged sections after we scope and clean them. Caps and damper components come from Gelco and Famco, the stuff chimney professionals actually specify, not what you’d find in a hardware aisle. When we stock parts for Altadena calls, we keep DuraFlex and HeatShield materials ready because we know the housing stock here leans old, unlined, and worth restoring.
See the difference
Before
After
Before
After
Before
AfterCommon Chimney Sweep Problems We See in Altadena Homes
- Deodar cedar and live-oak debris packed into caps. After a Santa Ana wind event, the 30- to 50-foot trees along foothill streets shed needles and twigs that load spark arrestors and caps. The symptom is a downdraft or a smoky fire, and homeowners usually blame creosote. Nine times out of ten up here, it’s debris, not glaze.
- Third-degree tar glaze from daily wood-stove burning. Foothill homes running stoves as primary heat through December and January build a hard, glassy glaze on the flue walls. This is the stage that fuels chimney fires, and it usually shows up before the owner’s annual sweep would catch it.
- Hairline cracks in original clay-tile flues. The dry Santa Ana autumn heats and cools old clay tiles fast, and the temperature swing opens thin cracks that wouldn’t exist otherwise. A flue that drafted fine in April can leak smoke and spark into the attic by December, and that’s a fix we need to catch with a camera before the burn season.
- Spalling mortar and damper damage tied to 1910s – 1930s construction. The original fireboxes in Altadena’s craftsman and Spanish Colonial homes were built with mortar that’s now a century old. Heat cycling and wildfire-season dry air leave that mortar crumbling at the damper, which is exactly what we found on the canyon-edge bungalow where woodpecker debris had hidden the real problem for months.
Pricing for Chimney Sweep in Altadena, CA
Here’s what you should expect to pay for a chimney sweep in Altadena, as of this writing. A standard open-fireplace cleaning runs $180 – $280. A wood stove with a liner is $220 – $320. A Level 2 camera inspection as a standalone service is $150 – $250, and if you bundle it with a sweep, we knock the combined price down rather than stacking them. What moves the number is flue height, creosote stage, and whether we’re clearing a packed cap or animal debris. What doesn’t move it is vague add-ons; the price we quote on the phone is the price you get unless the scope reveals something structural, and if it does, you see the footage and decide. Call (833) 467-7685 for a free estimate, and we’ll give you a firm number before we touch the ladder.
We Also Serve Cities Near Altadena
Our crew covers the full foothill corridor. If you’re in Pasadena, La Cañada Flintridge, East Pasadena, or San Marino, we run the same Altadena service protocol with the same pricing structure. The housing stock and burning patterns change slightly from block to block, but the method doesn’t: scope, sweep, show you the evidence, and give you a straight answer on what can wait and what can’t. If you’re anywhere along the 210 corridor, call (833) 467-7685 and we’ll get you scheduled.
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 About Chimney Sweep in Altadena
No, not safely. An unlined 1920s masonry chimney in Altadena has no continuous fire-rated surface protecting the surrounding framing from flue gases and creosote ignition. The mortar in those old fireboxes and flues is often spalled, and the clay-tile sections that do exist are frequently cracked. We need to scope it and, in almost every case, install a DuraFlex liner or apply HeatShield resurfacing before you put any wood fire through it. The scope footage tells you exactly what you’re working with. Call (833) 467-7685 and we’ll inspect it before you decide anything.
In Altadena, that’s most often a packed spark arrestor or cap, not a creosote problem. The deodar cedars and live oaks along the foothill streets drop heavy needle and twig loads during Santa Ana wind events, and that debris fills the cap within days. The fireplace then can’t draft because it’s breathing through a plugged airway. We clear the cap, brush the flue, and check for secondary causes like a cold flue or a damper that’s not fully opening. Call (833) 467-7685 and we’ll have an answer on the first visit.
If you’re burning every night through the November – March cold season, a mid-season re-sweep by late January is the realistic safe interval in the foothills. The primary-heat duty cycle builds third-degree tar glaze fast on unlined or lightly lined flues, and an annual pass simply misses the window where that glaze becomes a fire hazard. If you’re a weekend burner only, one sweep before the burn season and one after is enough. We’ll tell you honestly which category you’re in after we scope it the first time. Call (833) 467-7685 to book the first sweep and get a realistic interval based on how you actually burn.
It absolutely matters in Altadena. First-degree creosote is dry and flaky, sweeps off with a brush, and is normal even after a few fires. Second-degree is denser, tar-like, and needs mechanical scraping. Third-degree is the glassy, hard glaze that forms when a flue runs hot and then cools fast, which is exactly what a foothill wood stove does every cold night. Third-degree is the starting point for chimney fires. In valley homes you rarely see it before the annual sweep. Up here, we see it by December. That’s why the canyon-edge interval drops to six or eight weeks for daily burners. Call (833) 467-7685 if you’ve been burning more than a season and haven’t scoped the flue.
Yes. Many of the original masonry fireplaces in Altadena’s 1910s and 1920s bungalows have been converted to gas inserts, and we service those units as part of our full chimney scope. A gas insert still vents through the existing flue or a smaller liner, and that pathway needs to be intact and clear. We inspect the termination cap, check the liner connection, and clear any debris that’s settled since the previous season. If the flue was never lined for the insert, that’s a finding we’ll show you on camera with a recommendation, not a pressure call. Call (833) 467-7685 and we’ll work the insert inspection into a standard sweep.
Written by Al Vickers, Owner at Ontario Chimney, serving Altadena and the San Gabriel foothill corridor.
If you’re in Altadena and your chimney hasn’t been scoped in years, don’t wait for the first smoky fire to tell you something’s wrong. Call Ontario Chimney at (833) 467-7685 for a free estimate, and we’ll book a sweep that comes with a camera pass, straight answers, and options that respect the old masonry worth keeping in the foothill homes we work on every week.