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 rusted-out prefab cap, failed flashing around the chase, or a liner that has started to spall after years of hot dry summers and rare winter fires. Most Walnut homes were built in the 1980s and 1990s in planned tracts around Snow Creek and the Walnut Hills area, so we see factory-built metal chimney systems more than century-old masonry stacks. That changes what fails first and how we repair it. Call (855) 360-4975 when your fireplace starts acting up.
Why Walnut Homes Are Different
Walnut sits in the San Gabriel Valley hills, where summers are hot and dry and fireplaces sit untouched for eight or nine months at a stretch. That long idle season is the single biggest factor in what we find when we open a flue here. Caps fill with leaf litter from the oak and eucalyptus that line the hillside tracts. Birds and rats move into uncapped or damaged terminations. The first cool evening in November sends a wave of calls from homeowners off Snow Creek and near Mt. San Antonio College who lit a fire and immediately smelled smoke backing into the living room. It is rarely a dirty chimney in the classic sense. It is almost always a blocked cap, a creosote glaze that has hardened into a flammable crust after months of sitting, or a liner that quietly degraded while nobody was looking. The newer housing stock also means standard flue sizes and prefab components, which actually makes parts matching more predictable when you know the brands. We specify replacements by name because a 1989 factory fireplace takes a different termination than a 2003 one.
Styles & brands we work with
Our Main Walnut Services
Walnut homeowners call us most often for two services, both tied to the same root cause: systems that sat idle through a long dry season and got fouled by debris, pests, or creosote crust. One call covers both flue and vent, which is how we prefer to work.
Chimney Sweep in Walnut
A sweep in Walnut is less about removing cords of firewood soot and more about clearing what built up while the fireplace sat unused. We find bird nests in terminations, leaf mats above the damper, and creosote that has glazed onto prefab flue walls. Our team brushes the full length, vacuums with a HEPA-filtered setup, and checks the cap, spark arrestor, and damper operation before we call it done. If you have not burned in years and want to start again, start with a sweep and a camera look at the flue. Full details are on the Chimney Sweep in Walnut page.
Dryer Vent Cleaning in Walnut
Dryer vents clog faster than people expect in Walnut, partly because lint from large households in the planned tracts combines with the dust that blows in during Santa Ana wind events. A vent that has not been opened in five years is a fire hazard, plain and simple. We clean the full run from dryer to exterior termination, inspect the duct for crushed or disconnected sections, and replace the hood or flap if it no longer seals. We treat this as combustion-safety work, not a quick add-on. Read more on the Dryer Vent Cleaning in Walnut page.
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
Chimney repair in Walnut is driven by the way homes here were built and the way the climate treats them. Two-story 1980s and 1990s tract homes with prefab metal fireplaces and masonry veneer chases put the failure points at the cap, the flashing, and the liner. The long dormant season hides the damage until the first burn, when smoke backs into the house or a neighbor spots rust staining on the chase. Chestnut Chimney Sweep repairs these systems using HeatShield restoration and brand-name components like DuraFlex, Gelco, and Olympia Chimney products. We specify the right liner, cap, or repair product for your system by name, which matters when the fireplace is 30 years old and the original manufacturer has long since changed its specs. If you need a broader look at what repair involves, start with our Chimney Repair hub.
Chimney Cap Installation
Signs you need it
Rain water inside the firebox, birds or bees entering the flue, or visible rust on the existing cap mean it is time for a new one.
What it costs in Walnut
Chimney cap installation in Walnut typically runs $140 – $350 depending on flue size and cap material.
How we do it
We measure the flue opening, select a properly sized cap from brands we stock or order direct, secure it to the flue tile or chimney crown, and verify the spark arrestor mesh allows full draft.
Chimney Cap Replacement
Signs you need it
A cap that has rusted through, blown off in a Santa Ana wind event, or been torn apart by raccoons needs full replacement rather than repair.
What it costs in Walnut
Chimney cap replacement in Walnut typically costs $120 – $400, with the higher end for larger custom sizes or chase covers.
How we do it
We remove the damaged cap, inspect the exposed flue for animal entry or water damage, install the correct replacement, and fasten it so it holds through wind season.
Chimney Liner Installation
Signs you need it
Flaking tile pieces in the firebox, a smoky smell even when the damper is closed, or a camera inspection showing cracks mean the liner has failed.
What it costs in Walnut
Chimney liner installation in Walnut runs $1,200 – $2,400 for a standard prefab or masonry flue depending on height and liner material.
How we do it
We run a camera to document the existing liner condition, size the replacement to the flue dimensions, install the new liner with proper insulation and termination, and test draft before we leave.
Chimney Flashing Repair
Signs you need it
Water staining on the ceiling near the chimney, damp drywall in the chase, or visible gaps where the roof meets the chimney stack mean flashing has failed.
What it costs in Walnut
Flashing repair in Walnut typically costs $250 – $650 depending on roof pitch and whether the old flashing can be patched or must be re-cut.
How we do it
We lift the surrounding shingles or tile, remove the old flashing, install new step and counter flashing sealed with proper roofing caulk, and check the roof-chimney junction for water tightness.
Chimney Crown Repair
Signs you need it
Cracks across the concrete crown that let rain in, spalling concrete that falls into the flue, or a crown that holds standing water all point to crown failure.
What it costs in Walnut
Chimney crown repair in Walnut runs $300 – $700 for a standard masonry chimney when the cracks are surface-level and the crown does not need a full rebuild.
How we do it
We clean and prep the crown surface, fill cracks with a flexible crown sealer, or form and pour a new concrete crown if the old one has broken down past patching.
What Chimney Repair Costs in Walnut
| Item | Typical range in Walnut |
|---|---|
| Chimney cap installation | $140 – $350 |
| Chimney cap replacement | $120 – $400 |
| Chimney liner installation | $1,200 – $2,400 |
| Chimney flashing repair | $250 – $650 |
| Chimney crown repair | $300 – $700 |
Do I really need a new liner, or is that overkill?
You need a camera inspection to know. We show you the footage, explain what spalling or cracks mean for your specific system, and recommend replacement only when the liner has failed enough to be unsafe. Sometimes HeatShield restoration can buy years without full replacement. Call (855) 360-4975 and we will show you exactly what we see.
How often should a chimney be inspected in Walnut?
Once a year is the standard, even if you never burn. Walnut’s long idle season lets water and animals do damage that a quick cap check catches early. We inspect and sweep in one visit, and if repair is needed we quote it from the camera findings. Schedule before the first cold snap to avoid the November rush.
Brands We Service in Walnut
We work with HeatShield for liner restoration, Gelco and Olympia Chimney for caps and spark arrestors, and Famco components for venting and termination work. Parts are stocked or ordered direct, which keeps turnaround on Walnut repairs to days, not weeks. Full details are on our brands page.
See the difference
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After
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AfterPricing for Chimney Company in Walnut, CA
| Service | Typical range in Walnut |
|---|---|
| Chimney sweep | $139 – $250 |
| Dryer vent cleaning | $89 – $165 |
| Chimney cap installation | $140 – $350 |
| Chimney cap replacement | $120 – $400 |
| Chimney liner installation | $1,200 – $2,400 |
| Chimney flashing repair | $250 – $650 |
| Chimney crown repair | $300 – $700 |
What pushes price up in Walnut is roof pitch on the hillside lots and the chase height on two-story tract homes; both mean more ladder time and more material. Every quote is a flat price agreed before work begins, based on our camera inspection and the specific parts your system needs.
Neighborhoods We Serve in Walnut
We cover all of Walnut across the 91788, 91789, and 91795 ZIP codes, including the hillside tracts and the planned communities around the college. Typical response for a Walnut appointment is within the week, faster during the fall inspection season when we batch hillside routes together.
- Snow Creek area
- Walnut Hills tract
- Mt. San Antonio College vicinity
- Jennings Ave and surrounding planned communities
- Creekside and the east slope neighborhoods
Service Area – Cities Near Walnut
If you are just outside Walnut, we also work in South San Jose Hills, CA, Rowland Heights, CA, West Covina, CA, and Pomona, CA. The same brand-name parts and flat pricing apply, and the hillside conditions in those communities mean the same failure patterns we see in Walnut.
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 Walnut appointments are scheduled within a few days to a week, depending on the season. Fall is our busiest stretch. If you call before the first cold night, we can usually get a sweep or inspection on the calendar within the week. Call (855) 360-4975 for current availability.
Some planned tracts around Snow Creek and Walnut Hills have architectural rules about visible changes like caps or chase covers. We will tell you what we are installing and provide the specs if your HOA asks for them. Interior work like a sweep or liner repair rarely requires any notice at all.
Yes, that is how we prefer to work in Walnut. A single visit handles the chimney sweep or repair and the dryer vent cleaning, which saves you scheduling two trades and keeps both combustion systems on the same inspection cycle. We quote the combined total before we start.
Call Chestnut Chimney Sweep at (855) 360-4975 for a free estimate on chimney repair, chimney sweeping, or dryer vent cleaning in Walnut. We show you the camera footage, spec the right parts by name, and quote 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
"Cap keeps the birds out now, which after two springs of scratching noises is worth every penny."
— Paige Parker"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."
— Andres Morales"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."
— Allen Nguyen