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 Avocado Heights
If you’re in Avocado Heights and your fireplace is starting to smell or the draft has gone lazy, the culprit is usually creosote or an uncapped flue. Walnut Chimney handles Chimney Sweep work across 91746, and we see more avocado-leaf and squirrel-nest blockages here than almost anywhere else in the San Gabriel Valley. Call us at (855) 341-3461 and we’ll get your flue inspected, cleaned, and capped so it pulls the way it should.

Living in an unincorporated equestrian pocket changes how a chimney company has to work. Roads are narrower. Lots are bigger. Fireplaces are older. We plan access before we arrive, and we carry the right gear for the roof lines we actually find in Avocado Heights, from original 1950s ranch homes to the newer custom builds near the park.
Key Takeaways:
- A standard Avocado Heights sweep runs $189 – $289, and a Level 2 camera inspection adds $150 – $250.
- Uncapped clay-tile flues are the number one call driver in 91746.
- We handle multiple fireplaces and flues in one visit, with one report.
- Dryer vent cleaning can be added to the same Avocado Heights appointment.
Why Walnut Chimney Is Avocado Heights’s Preferred Chimney Sweep Company
Most Avocado Heights homes we visit were built between the 1950s and 1970s, and a surprising number still have their original clay-tile flue liner. That’s not a problem by itself. What creates problems is the uncapped top, because avocado and citrus leaves, twigs, and squirrel nests drop straight into the flue during the months it sits idle. We know to look for it before we ever put a brush in the chimney.
Our owner, Russ Dempsey, built Walnut Chimney around a simple idea: the person who sweeps your chimney should also be the person who can repair it. No referrals to another contractor. If our tech finds a spalled liner, a seized damper, or a missing cap, we quote the fix and can often complete it on the same visit or the next. That matters in Avocado Heights, where many calls come from horse properties and homes set back on lanes that a generic truck-and-ladder operation struggles to reach.
Homeowners here tend to be hands-on and direct. They want to know what’s in the flue, what it costs to remove, and whether the fireplace is safe to burn this week. We answer those questions with camera footage, not guesswork. Every sweep includes a visual inspection, and we offer Level 1 and Level 2 options for homes with multiple flues or a recent real estate transaction.
Styles & brands we work with





Chimney Services in Avocado Heights
Chimney Services in Avocado Heights mean more than running a brush up the flue. We inspect, sweep, and document the full path from the firebox to the cap, because a 1960s ranch fireplace with an eight-foot clay-tile run behaves very differently from a newer factory-built unit in a two-story custom home.
Most Avocado Heights clients book us because of one of three things: smoke rolling back into the living room, a smell that gets stronger on warm days, or visible debris falling into the firebox. We start every job by checking the cap and crown. If the cap is missing, we say so and show you the photo. Then we run the brush, remove the soot and creosote, and finish with an inspection of the flue interior.
Sweep and Level 1 Inspection
For a single fireplace in Avocado Heights, this is the most common service. We sweep the flue, clean the firebox, check the damper, and confirm the cap is intact. If you use the fireplace more than twice a month during winter, this should happen annually.

Level 2 Camera Inspection
This is the right call for older Avocado Heights homes that have never been inspected, or for houses changing hands. A camera goes down the full flue and documents cracks, gaps, or hidden blockages. We give you photos and a written summary so you can make a decision based on evidence, not a sales pitch.

What happens when you call
- 1
A real person answersNo phone trees — you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Chimney Sweep Certified in Avocado Heights
Chimney Sweep Certified means our techs train on the systems we actually encounter in Avocado Heights: original masonry fireplaces, clay-tile flues, heatilator-style metal boxes, and the occasional factory-built unit in a later addition. Certification is about consistency, but what keeps us sharp here is volume. We see a lot of the same ranch-era construction, and we know what fails first.
The sweep itself is straightforward. We protect the hearth and flooring, run a properly sized brush through the flue, vacuum the soot and creosote out of the firebox and smoke shelf, and check that everything moves the way it should. What makes the difference is what happens before and after: we verify the flue is clear with a camera when needed, and we tell you exactly what we found and whether it can wait.

Creosote Removal
Avocado Heights homes that burn avocado or citrus wood build up a dense, flaky creosote faster than homes burning seasoned oak. First-degree creosote brushes out easily. Second- and third-degree glazing requires rotary tools and chemical treatment. We’ll tell you which one you have and what it costs before we start.
Soot Removal and Damper Service
Soot is mostly cosmetic, but a sticky damper is a safety and comfort problem. We clean the damper track and housing, free up the mechanism, and note whether it seats correctly. If it needs replacement, we’ll show you why and give you a number.
Trusted Brands We Service in Avocado Heights
We don’t push a single brand on every Avocado Heights home. We stock and install components from DuraFlex for flexible liner systems, HeatShield for ceramic flue resurfacing, and Olympia Chimney for caps and terminations. For a 1960s clay-tile flue that’s starting to spall, HeatShield can often bring it back to service without a full teardown. For newer factory-built units, the right cap or termination from Olympia stops the leaf-and-squirrel problem at the source. Because we keep common parts accessible, a follow-up repair in Avocado Heights doesn’t always mean another service window weeks out.
Common Chimney Sweep Problems We See in Avocado Heights Homes
- Uncapped 1950s clay-tile flues: The original terra cotta liner is still there, but the cap isn’t. Avocado and citrus leaves, twigs, and squirrel nests pack the flue and block the draft. A brush alone won’t fix it; you need the debris pulled, the flue inspected, and a proper cap installed.
- Hardened summer creosote on ranch fireplaces: Hot, dry Avocado Heights summers bake soot and first-degree creosote into a hard, shiny surface. A quick skim leaves it behind. We photograph the flue before and after so you can see what was actually removed.
- Access problems on horse properties and narrow lanes: The lane off Avocado Heights Park isn’t built for a 30-foot truck and ladder setup. We check access before dispatch and carry what we need to work from the roof or a smaller footprint. The chimney still gets swept; the job just gets planned properly.
- Factory-built units swept with masonry tools: Newer custom homes sometimes have both a traditional masonry fireplace and a metal factory-built unit. The tools and brushes are different. Using masonry gear on a factory-built flue damages the liner and skips the inspection points the manufacturer requires.
See the difference
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After
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After
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AfterPricing for Chimney Sweep in Avocado Heights, CA
A standard chimney sweep in Avocado Heights runs $189 – $289 for a single fireplace with a standard flue. If the flue hasn’t been cleaned in years and has heavy creosote, or if we need to remove a nest and debris first, expect $300 – $400. A Level 2 camera inspection adds $150 – $250, and we recommend it for any home in 91746 that’s been through a sale or has an original, never-inspected flue. If we find a missing cap, a basic replacement is usually $85 – $175 for the cap itself plus install time. Every quote comes after we’ve seen the chimney, not before, and the estimate is free. Call (855) 341-3461 to lock in a time.
We Also Serve Cities Near Avocado Heights
Walnut Chimney works throughout the San Gabriel Valley, including Avocado Heights and the surrounding communities. We regularly schedule sweeps in West Puente Valley, La Puente, Valinda, and El Monte. If you’re on the edge of 91746 or just over the county line, call us and we’ll tell you which day we’re already working your side of the neighborhood.
Serving Avocado Heights, CA — Our Local Coverage Area
We’re based in the Avocado Heights 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 Avocado Heights
Because idle chimneys in Avocado Heights take on debris, not creosote alone. An uncapped flue collects avocado leaves, citrus leaves, and squirrel nests during the months you never light a fire. Then the first cool evening arrives, you start a fire, and smoke backs into the room. An annual inspection catches the blockage before it becomes a chimney fire or carbon monoxide problem. Call (855) 341-3461 to schedule one visit a year.
Avocado and citrus wood tend to produce a flaky, sticky first-degree creosote that hardens into a glaze if the fireplace sits unused through a hot Avocado Heights summer. First-degree creosote brushes out with a standard sweep. Hardened second-degree glazing needs rotary tools and more time, which raises the cost. We’ll tell you which one you have after the first look.
Yes. A larger Avocado Heights property might have a primary masonry fireplace, a secondary unit in a family room, and a dryer vent that’s never been touched. We sweep each flue separately, photograph each one, and give you one report covering everything. The dryer vent is a fire hazard most chimney companies won’t mention, and we’ll clean it in the same visit if you want.
Most of the time, yes. We ask about access when you book: gate width, parking, whether the chimney is on the roof or a chase, and whether a truck can turn around. A lot of Avocado Heights lanes are single-width with horses on both sides, so we plan the vehicle footprint before we arrive. Call (855) 341-3461 and we’ll walk you through what we need.
It changes the cleaning completely, and it’s often a good move for Avocado Heights homes where the fireplace gets used once or twice a year. A gas insert or log set still needs the flue swept and inspected, but the creosote load drops dramatically. If you go the insert route, you’ll still want the existing flue liner inspected before installation, and we can install the proper liner system if the original clay tile is compromised. Call us at (855) 341-3461 for a straight answer on what your specific fireplace can take.
Contact Walnut Chimney in Avocado Heights
If your chimney hasn’t been looked at in years, or you’re smelling smoke in the house on a still day, the problem is usually simple to find and fix. We’ll come out, look at the full system, show you what we see, and give you a fair number. No guesswork, no upselling a liner you don’t need. Call (855) 341-3461 for a free estimate in Avocado Heights, and we’ll get you on the schedule.
Written by Russ Dempsey, Owner at Walnut Chimney, serving Avocado Heights and the San Gabriel Valley.