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.
Chimney Company in Walnut, CA
Chimney repair in Walnut usually means one of three things: a cracked mortar crown, a failing flue liner, or flashing that’s pulling away from a Spanish-tile roofline. Most homes here were built between the late 1980s and the late 1990s, and we’re now seeing the predictable wear that comes with three decades of Southern California sun, Santa Ana winds, and the occasional earthquake settling. We handle the full repair scope in-house, from cap replacement to full DuraFlex liner installation, and we’ve served Walnut since 2018. Call (855) 382-6159 when you need a chimney company that fixes what it finds.
Why Walnut Homes Are Different
Walnut’s housing stock is younger than most Southern California markets, but that doesn’t mean the chimneys are trouble-free. The homes in ZIP codes 91788, 91789, and 91795 are predominantly two-story Mediterranean and Spanish-tile tract builds from the 1980s and 1990s. Many have prefab metal fireplaces or tile-faced chimneys rather than traditional full-masonry brick stacks. That construction style has a specific failure pattern: the prefab flue pipe sections corrode internally, the chase cover on top rusts through, and the flashing detail where the chimney meets the concrete tile roof starts leaking. On sloped hillside lots, those roof penetrations sit at awkward heights that make regular inspection something homeowners skip year after year.
The climate compounds it. Walnut gets hot dry summers and mild, nearly snowless winters. Fireplaces get used maybe five to ten nights a year. Creosote accumulation stays light, but long-idle flues fill with leaf litter, bird nests, and the odd dead rodent. Santa Ana events push dry leaves and debris directly into caps and chase covers. What we find in Walnut is less about baked-on creosote and more about water intrusion, corroded components, and wildlife. The inspection and camera work matter more here than aggressive brushing.
Styles & brands we work with
Our Main Walnut Services
Two services dominate the calls we get from Walnut homeowners: chimney sweeping for seasonal fireplace prep, and dryer vent cleaning for the fire hazard many people don’t realize they have. Each has its own detailed page, linked below.
Chimney Sweep in Walnut
Most Walnut sweeps involve a fireplace that has sat unused for months or years. We remove leaf litter, nests, and whatever the Santa Ana winds pushed into the flue, then run a camera to check the liner condition and the smoke chamber. On hillside homes with steep tile roofs, we set up ladder access carefully and inspect the cap and crown from roof level, not just from the ground. Read the full breakdown at Chimney Sweep in Walnut.
Dryer Vent Cleaning in Walnut
A clogged dryer vent is a fire waiting to happen, and Walnut’s two-story homes often run dryer ducting through walls, across garage ceilings, and out through the roof or a high exterior wall. That means long runs, more bends, and more lint accumulation than a first-floor laundry with a short direct vent. We treat this as combustion-venting work because that’s what it is. Details on Dryer Vent Cleaning in Walnut.
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 Repair in Walnut
Three decades of sun and Santa Ana wind cycles have taken a toll on Walnut’s 1980s and 1990s chimneys. We repair cracked crowns, replace corroded chase covers and caps, rebuild flashing on Spanish-tile roofs, and install or restore flue liners. This is the core of what we do: we diagnose the problem, we show you the camera evidence, and the same crew that found it fixes it. No handoff to a separate contractor. Our Chimney Repair service covers everything from a simple cap swap to a full HeatShield resurfacing when the flue liner qualifies.
Chimney Cap Installation
Signs you need it
You have no cap at all, or the existing one is bent, rusted through, or missing mesh panels.
What it costs in Walnut
Expect $185 to $350 for a standard stainless or copper cap installed, depending on flue size and roof access difficulty.
How we do it
We measure the flue opening, install a properly sized cap with secure mechanical fastening, and verify draft is unaffected.
Chimney Cap Replacement
Signs you need it
The old cap is rusted through, mesh is torn, or wind-driven rain has been getting down the flue.
What it costs in Walnut
Replacement runs $245 to $425 including removal of the failed unit and debris clearing from the flue top.
How we do it
We remove the damaged cap, clean the mounting surface, and install a new cap sized to the existing flue tile or liner.
Chimney Liner Installation
Signs you need it
Camera inspection shows cracked clay tiles, gaps between flue sections, or spalling that exposes the masonry behind the liner.
What it costs in Walnut
Plan on $2,800 to $6,000 for a full DuraFlex stainless flexible liner installation, including clearance evaluation and termination.
How we do it
We size the liner to the appliance and flue, feed it through from the top, connect it to the appliance outlet, and insulate where code requires.
What Chimney Repair Costs in Walnut
| Item | Typical range in Walnut |
| Chimney cap installation | $185 – $350 |
| Chimney cap replacement | $245 – $425 |
| Chimney liner installation (DuraFlex flexible stainless) | $2,800 – $6,000 |
Can you repair a chimney without replacing the whole liner?
Sometimes, yes. If the flue tiles show hairline cracks or deteriorated mortar joints but the structural liner is otherwise intact, HeatShield resurfacing can restore the interior surface without a full tear-out and replacement. The cost runs lower than a full liner, and the work qualifies under most warranty terms.
How long does chimney repair take in Walnut?
Cap work and flashing repair are typically same-day jobs. A full liner installation runs one to two days depending on access and whether the home is on a sloped lot with difficult roof staging. Crown repair usually requires one day plus 24 hours of curing time.
Brands We Service in Walnut
We install and service materials from DuraFlex, HeatShield, Gelco, and Olympia Chimney, the same professional-grade product lines stocked at contractor supply houses. Parts for common cap sizes and liners are stocked locally, and most Walnut jobs start within days of the estimate. See our brands for the full list.
See the difference
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AfterPricing for Chimney Company in Walnut, CA
| Service | Typical range in Walnut |
| Chimney cap installation | $185 – $350 |
| Chimney cap replacement | $245 – $425 |
| Chimney liner installation (DuraFlex flexible stainless) | $2,800 – $6,000 |
| Chimney crown repair | $500 – $1,200 |
| Chimney flashing repair | $400 – $900 |
Prices in Walnut run higher than flatland cities when the chimney sits on a sloped hillside lot, because roof staging takes longer and safety equipment matters more. Two-story Spanish-tile roofs also add labor compared to single-story composition shingle homes. You get a flat-price quote before any work starts, so the number we give you is the number you pay.
Neighborhoods We Serve in Walnut
We work throughout Walnut’s hillside tracts and the flatter sections near the 60 freeway corridor. Here are a few of the neighborhoods we service regularly:
- Snow Creek area (91789)
- Walnut Ridge Estates
- Timberline and the hillside tracts south of La Puente Road
- Vintage Grove (91788)
- Three Oaks (91795)
Response time across Walnut is fast; we schedule most appointments within the same week, and urgent repair calls get prioritized when a flue is exposing the home to water or ember risk.
Service Area – Cities Near Walnut
Corona Chimney Sweep works throughout the San Gabriel Valley and the surrounding foothill communities. We regularly schedule jobs in Rowland Heights, CA, which shares the same 1980s-1990s housing era and hillside terrain. We also serve West Covina, CA, Pomona, CA, and South San Jose Hills, CA for both chimney and dryer vent work. If you’re on the Walnut border, call us and we’ll confirm coverage.
Serving Walnut, CA — Our Local Coverage Area
We’re based in the Walnut 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 Company in Walnut
Most inspections and non-urgent repairs in Walnut are scheduled within one week. If you have active water intrusion through the chimney or visible debris falling into the firebox, call us and we’ll work to get a technician out sooner. The roof access on hillside tracts takes a bit longer to set up, so we quote realistic windows, not promises we can’t keep.
Some Walnut HOAs require approval for exterior changes, including chimney caps or chase covers that are visible from the street. If your home is in an HOA-governed tract, check your CC&Rs before we install anything visible. Cosmetic choices like cap color or material matter more than functional ones. We can provide spec sheets for any product if your HOA asks.
We cover all three Walnut ZIP codes: 91788, 91789, and 91795. That includes the hillside tracts, the neighborhoods along the 60, and the newer sections near Mt. San Antonio College. If you’re unsure whether you fall in our service area, call (855) 382-6159 and we’ll tell you straight.
If your chimney has been sitting unused, or you’ve noticed water stains near the fireplace, call Corona Chimney Sweep at (855) 382-6159 for a free estimate. We’ll inspect, show you what we find, and give you a flat price before any work begins.
What happens when you call
- 1A real person answersNo phone trees — talk to a local chimney cleaning pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you — the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Walnut Customers Say
"Creosote buildup was worse than I realized. He measured it, showed me the glazing on the flue with the camera, and was honest that we were closer to a chimney fire than I wanted to hear."
— Daniela Martinez"Liner was cracked in two places. He walked me through the repair options honestly, including the one that was cheaper for him and better for me."
— Imani Dawson"Fireplace had never drawn properly since we moved in. He found the damper was only opening halfway due to a bent linkage and fixed it in ten minutes."
— Veronica Flores