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 Ontario, CA
Chimney repair in Ontario, CA usually means one of two things: a cracked clay tile liner in a 1960s tract home, or a crown that’s been baked by Inland Empire summers until it crumbles. Our crew starts with a camera inspection so you can see exactly what’s happening before any work is quoted. That matters here because Ontario’s older masonry chimneys hide problems behind decades of soot and wind-blown debris. Call (855) 360-4975 and we’ll walk the flue with you, not just hand you a bill.
Why Ontario Homes Are Different
Ontario’s core neighborhoods off Euclid and Holt are full of post-WWII and 1960s-70s single-story stucco tract homes. Those houses were built with original masonry chimneys and clay tile flues, and most were never fitted with modern caps. That means fifty-plus years of rain, Santa Ana wind, and freeze-thaw cycling working on mortar joints. The dry Inland Empire climate doesn’t soak chimneys like coastal air does, but it bakes crowns and accelerates cracking. In the older blocks, we frequently find original 1950s clay tile flues with hairline cracks and missing spark arrestors, a combination that lets birds nest deep in the flue. A routine sweep in Ontario often turns into a liner inspection once we get the camera up there. The newer development east toward 91758 and 91798 has more factory-built metal fireplaces, which present a different set of clearances and venting conditions. Chimneys here go months unused in summer heat, then face wind-driven dust and debris when the Santa Anas kick up. Annual inspection is less about heavy creosote buildup and more about structural integrity.
Styles & brands we work with
Our Main Ontario Services
Two services account for most of the calls we get from Ontario homeowners: the annual chimney sweep and dryer vent cleaning. Here’s what each one looks like in this city.
Chimney Sweep in Ontario
An Ontario chimney sweep typically involves removing wind-blown dust, soot fall, and whatever birds left behind, then checking the flue for cracks that the dry climate tends to worsen. In older tract homes off Holt and Euclid, we’re specifically looking for missing spark arrestors and damaged caps that let wildlife in. The Santa Ana season pushes debris from the foothills straight down older flues in 91761 and 91764, so we schedule sweeps around early fall before burning season. Full details on what we check and how we price it are on our Chimney Sweep in Ontario page.
Dryer Vent Cleaning in Ontario
Dryer vent cleaning in Ontario is a fire-safety service first. Lint accumulation in older single-story homes with long vent runs is common, and the dry inland air makes that lint ignite faster than in humid climates. We use Famco-grade venting knowledge to assess airflow, not just push a brush through. If your dryer takes two cycles to finish a load, that’s a blocked vent, not a failing appliance. See our Dryer Vent Cleaning in Ontario page for the full breakdown of what we inspect and why it matters in this climate.
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 Ontario
Chimney repair in Ontario usually starts with a cracked flue liner or a crown that’s given up. The dry heat here does two things: it bakes masonry until hairline cracks open, and it clears the way for wind-driven debris to find those cracks. In the 1960s tract homes around 91762 and 91764, we regularly see original clay tile liners with fractures that run several feet, which is a fire hazard and a carbon monoxide path into the house. The repair is rarely as bad as it sounds once the camera shows the extent. We specify the right fix by name, whether that’s a Copperfield cap, a DuraFlex liner, or a HeatShield restoration, and we don’t recommend anything you can’t see evidence for yourself. For a look at our full repair capability, visit our Chimney Repair hub page.
Chimney Cap Installation
Signs you need it
You need a cap if you can see daylight from inside the firebox, find droppings or nesting material, or notice water staining on the ceiling near the flue.
What it costs in Ontario
Chimney cap installation in Ontario typically runs $200 to $500 depending on flue size and whether we’re fitting a standard model or a custom Copperfield cap.
How we do it
We measure the flue opening, confirm the crown can accept a mechanical or adhesive mount, install the cap, and verify clearance and draft before we leave.
Chimney Cap Replacement
Signs you need it
Rust perforation, missing spark arrestor mesh, or a cap that’s pulled loose by Santa Ana winds means replacement, not repair.
What it costs in Ontario
Replacement generally falls between $200 and $500, with the high end for oversized or multi-flue caps on older Ontario chimneys.
How we do it
We remove the old cap, inspect the crown for cracks that let water in, set the new cap, and secure it against the wind loads common in the foothills.
Chimney Liner Installation
Signs you need it
Camera inspection showing cracked tiles, missing mortar joints, or a flue that’s no longer safe to burn with.
What it costs in Ontario
Liner installation in Ontario ranges $1,200 to $6,000 depending on flue size, access from roof or firebox, and whether we’re relining a single or multi-story run.
How we do it
We size the flue, pull a new DuraFlex liner through the existing chase, insulate as needed, and reconnect the appliance at the breach before testing draft.
Chimney Flashing Repair
Signs you need it
Water stains on the ceiling near the chimney, peeling paint around the roofline, or visible gaps where the flashing meets the masonry.
What it costs in Ontario
Flashing repair typically runs $300 to $900, with most Ontario homes falling in the middle due to single-story roof access.
How we do it
We strip the damaged flashing, inspect the underlayment where the chimney meets the roof, and install new step and counter flashing with proper weep holes.
Chimney Crown Repair
Signs you need it
Cracks in the crown, spalling concrete, or water pooling on top of the chimney instead of shedding off.
What it costs in Ontario
Crown repair in Ontario falls between $400 and $1,200 depending on whether we can patch or need to pour a new crown with proper overhang.
How we do it
We assess the existing crown, remove loose material, and either apply a Gelco crown sealant or form and pour a new crown that sheds water away from the flue.
What Chimney Repair Costs in Ontario
| Item | Typical range in Ontario |
|---|---|
| Chimney cap installation | $200 – $500 |
| Chimney liner installation | $1,200 – $6,000 |
| Chimney crown repair | $400 – $1,200 |
Do I really need a new liner if the old one has hairline cracks?
Hairline cracks in a clay tile liner are not a minor cosmetic issue. Heat, moisture, and exhaust gases work into those cracks every time you burn, and the fissures widen. A camera inspection tells us whether the liner needs replacement or whether a HeatShield restoration can seal the cracks and buy you years.
Can you fix a chimney in Ontario without tearing it down?
Most repair work we do never touches the exterior masonry. We reline from inside the flue, repair crowns from the top, and replace flashing at the roofline. Full tearout is rare and only happens when the structure itself is compromised. Call (855) 360-4975 for an exact quote, estimates are free.
Brands We Service in Ontario
We stock and install HeatShield, Gelco, Olympia Chimney, and Famco parts for Ontario homes. Those are the same product lines certified chimney technicians specify nationwide, not hardware-store substitutes. Our service vehicles carry common cap sizes, crown sealants, and liner components, so most one-visit repairs don’t wait on a parts order. See our brands for more on why we picked each one.
See the difference
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After
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AfterPricing for Chimney Company in Ontario, CA
| Service | Typical range in Ontario |
|---|---|
| Chimney sweep | $149 – $250 |
| Chimney cap installation | $200 – $500 |
| Chimney cap replacement | $200 – $500 |
| Chimney liner installation | $1,200 – $6,000 |
| Chimney flashing repair | $300 – $900 |
| Chimney crown repair | $400 – $1,200 |
| Dryer vent cleaning | $89 – $170 |
In Ontario, what pushes price up is usually access. Second-story flues, steep roof pitches on foothill homes, and flues with multiple offsets all add labor. We agree on a flat price before the work starts, and if the camera shows something that changes scope, we stop and show you the image before touching anything else.
Neighborhoods We Serve in Ontario
We work across all of Ontario’s ZIP codes. Most appointments are in the older single-story tract neighborhoods where original masonry chimneys dominate, but we also cover the newer east-side development with factory-built fireplaces. Typical response time is two to four business days, longer during the fall burning-season rush.
- Downtown Ontario (91762)
- Euclid Avenue corridor (91764)
- Holt Boulevard tract homes (91761)
- East Ontario (91758)
- South Ontario / 91798
Service Area – Cities Near Ontario
Chestnut Chimney Sweep also covers the surrounding Inland Empire cities. We regularly work in Montclair, CA, Upland, CA, Chino, CA, and San Antonio Heights, CA. Each area has its own housing stock and chimney conditions, but the same crew, same brands, and same camera-first approach go everywhere we work.
Serving Ontario, CA — Our Local Coverage Area
We’re based in the Ontario 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 Ontario
From our Rialto base, we typically reach Ontario in 30 to 45 minutes. Most sweeps and inspections are scheduled within two to four business days, though October and November book out faster. Fall is our busiest season in Ontario as homeowners prepare for burning season.
Routine sweeps and most component replacements, caps, crowns, flashing, liner relining, don’t require a permit in Ontario. A permit is usually only pulled when we’re altering the firebox opening or doing structural masonry work beyond the flue. We handle permit paperwork if it’s ever needed and will tell you before work starts.
Yes. We cover 91762, 91764, 91798, and 91758, plus the older 91761 blocks off Euclid and Holt. The service area includes every neighborhood listed on this page and the surrounding cities linked above.
If your Ontario chimney hasn’t been looked at in a few years, or your dryer is taking twice as long to finish a load, call (855) 360-4975 for a free estimate. We’ll put a camera up the flue and show you what we see before we recommend anything.
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 Ontario 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."
— 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"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."
— Marisol Salazar