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 usually means one of two things: a cracked crown letting water into a 1960s masonry fireplace, or a rusted-out metal liner in a home that hasn’t burned a log in years. Most of the chimneys we work on in Ontario belong to single-story tract homes and ranch-style houses built between the 1950s and 1970s, and the long, dry off-season here creates its own set of problems. We’re Mayflower Chimney Sweep, and we handle the full scope: sweep, repair, reline, and dryer vent work. Call (877) 819-0285 when you need someone who can actually fix what the sweep finds.
Why Ontario Homes Are Different
Ontario sits in the South Coast Air Basin, which means bad air days are a fact of life, and since 2017 the South Coast AQMD’s Rule 445 has essentially banned wood burning on most days from November through February. That changed how chimneys age here. A fireplace in Ontario isn’t getting steady burn-season use the way it would in a colder climate. Instead, it sits unused for months at a time, which gives creosote time to harden, birds time to nest, and rust time to take hold on caps and dampers. Many homeowners we visit in the 91762 and 91764 ZIP codes haven’t lit a fire in over a year, and they’re often surprised by what we find in the flue.
The housing stock tells the same story. The older neighborhoods around downtown Ontario and south of the 10 are full of original masonry fireplaces with clay tile liners that are now sixty or seventy years old. Move north toward the 210 and into the 91758 and 91798 areas, and we see more 1980s and 1990s stucco homes with factory-built fireplaces and gas inserts. Gas inserts still need venting checked, caps inspected, and the occasional animal nest cleared. Dry summers mean whatever creosote exists bakes onto the flue walls. Mild winters mean the chimney never gets the kind of hot, steady use that would burn some of it off. That combination is why so many Ontario customers call us for repair work after a sweep reveals something that has been quietly deteriorating for a decade.
Styles & brands we work with
Our Main Ontario Services
Two services account for most of the calls we run in Ontario: chimney sweeping with inspection, followed by dryer vent cleaning. Here’s what each one looks like in this city.
Chimney Sweep in Ontario
A sweep in Ontario is less about clearing heavy creosote from a winter of burning and more about removing what built up during the rare fires, plus whatever moved in during the long off-season. We brush the flue, check the liner, inspect the cap and screen, and confirm the damper opens and seals. In older Ontario tract homes, we often find clay tile liners with hairline cracks that have been absorbing moisture for years. We tell you what we find, in plain language, before we touch anything. Chimney Sweep in Ontario covers the full process, pricing, and what a standard inspection includes in this city.
Dryer Vent Cleaning in Ontario
Dryer vents are chimneys too, and in Ontario’s dry climate, the lint that accumulates inside them is often bone-dry and highly flammable. Homes built in the 1970s and 1980s frequently have long vent runs that snake through walls or under floors, and those bends collect lint fast. A clogged dryer vent makes the dryer run hotter and longer, and it’s a leading household fire risk. Dryer Vent Cleaning in Ontario explains how we clean the full run, what signs indicate a blockage, and how often Ontario homeowners should schedule this service.
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 is dominated by water damage and old age. The same dry heat that makes this area comfortable most of the year also bakes chimney crowns until they crack, and those cracks let rain from the occasional winter storm seep into the masonry. In homes built during the 1950s and 1960s, we routinely find clay tile liners that have spalled or cracked from decades of temperature swings, even if the fireplace was only used a handful of times each year. The good news is that Mayflower Chimney Sweep handles repair alongside sweeping, so when our sweep finds a problem, the same company can fix it with named-brand materials from Chimney Repair systems we stock and install ourselves.
Chimney Cap Installation
Signs you need it
You might need a new cap if you hear birds or scratching in the chimney, see water streaks on the firebox walls, or notice debris falling onto the damper.
What it costs in Ontario
Chimney cap installation in Ontario typically runs $180 to $340 depending on the cap size and whether the flue needs a custom bracket.
How we do it
We measure the flue, select a correctly sized cap from Olympia Chimney or Copperfield, secure it to the crown, and confirm the mesh screen is seated so nothing gets in.
Chimney Cap Replacement
Signs you need it
A cap that is rusted through, missing its screen, or no longer seated tightly is a direct invitation for water, birds, and embers to get where they shouldn’t.
What it costs in Ontario
Replacing an existing cap in Ontario is usually $150 to $300, which covers removing the old one and installing the new cap with proper fasteners.
How we do it
We remove the old cap, inspect the flue opening for damage, and install a replacement that matches the flue dimensions and stands up to Ontario’s sun and wind.
Chimney Liner Installation
Signs you need it
Crumbling clay tiles, smoke seeping through walls, or a sweep that reveals gaps in the liner all point to a liner that is no longer doing its job.
What it costs in Ontario
Liner installation in Ontario generally ranges from $2,300 to $5,400, with most Ontario jobs landing between $2,800 and $3,800 for a standard single-story home.
How we do it
We size the new liner to the appliance and flue, run it down the chimney, insulate around it where the masonry needs it, and connect everything at the firebox and the cap.
Chimney Flashing Repair
Signs you need it
Water stains on the ceiling near the chimney, damp drywall in attic spaces, or visible gaps where the roof meets the chimney all indicate flashing failure.
What it costs in Ontario
Flashing repair in Ontario is typically $300 to $600, though the final number depends on how much of the roofline needs to be lifted and resealed.
How we do it
We inspect the roof-to-chimney junction, remove old or failed sealant, and install proper step and counter flashing so water drains away from the masonry.
Chimney Crown Repair
Signs you need it
A crown with visible cracks, spalling concrete, or a surface that holds water instead of shedding it needs repair before the freeze-thaw cycle in winter makes it worse.
What it costs in Ontario
Crown repair in Ontario typically falls between $500 and $1,200, depending on the crown’s condition and whether we need to rebuild the top surface or simply seal it.
How we do it
We clean the crown, patch or resurface the damaged areas with a proper chimney-grade mix, and add a weatherproof seal so water is directed away from the flue.
What Chimney Repair Costs in Ontario
| Item | Typical range in Ontario |
|---|---|
| Chimney cap installation | $180 – $340 |
| Chimney cap replacement | $150 – $300 |
| Chimney liner installation | $2,300 – $5,400 |
How much does chimney liner replacement cost in Ontario?
Liner replacement in Ontario typically costs $2,800 to $3,800 for a standard one-story home, though the full range spans $2,300 to $5,400 depending on liner material and flue height. Call (877) 819-0285 for a written quote.
Can you fix a chimney crown without rebuilding it?
Yes, when the crown has surface cracking but the concrete base is still sound, we can resurface and seal it instead of tearing it out. A full rebuild is only needed when the crown is badly spalled or missing sections.
Brands We Service in Ontario
We stock and install materials from Olympia Chimney, Famco, Copperfield, and DuraFlex. These are professional-grade brands used by certified chimney companies nationwide, so you can research exactly what goes into your home. We name what we use and stand behind it. Most common parts for Ontario homes are on the truck or available within a few days. Our brands page lists the full range.
See the difference
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After
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After
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AfterPricing for Chimney Company in Ontario, CA
| Service | Typical range in Ontario |
|---|---|
| Chimney cap installation | $180 – $340 |
| Chimney cap replacement | $150 – $300 |
| Chimney liner installation | $2,300 – $5,400 |
| Chimney flashing repair | $300 – $600 |
| Chimney crown repair | $500 – $1,200 |
| Chimney sweep with inspection | $170 – $250 |
| Dryer vent cleaning | $130 – $200 |
Prices in Ontario tend to push toward the upper end when we’re working on two-story homes or when the chimney hasn’t been opened in years and needs significant debris removal before the real work can start. We give you a flat price before we book, and we don’t add fees just because the job turned out to be dirtier than expected.
Neighborhoods We Serve in Ontario
We work throughout Ontario, from the older pockets near downtown to the newer developments along the 60 and the 15. Response time across the city is usually one to three business days, depending on the season and how full the schedule is.
- Downtown Ontario
- North Ontario
- Ontario Ranch
- South Ontario
- The Preserve
Service Area – Cities Near Ontario
Mayflower Chimney Sweep also serves the surrounding Inland Empire communities, including Chino, CA, Rancho Cucamonga, CA, Los Serranos, CA, and Jurupa Valley, CA. If you’re just outside Ontario, call (877) 819-0285 and we’ll confirm coverage and get you on the schedule.
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
Most chimney repairs, including cap replacement, crown work, and liner installation, do not require a separate city permit in Ontario when the work is done by a licensed contractor. However, if a full rebuild or structural masonry work is involved, the city may want to review the scope. We’ll tell you if your project triggers anything beyond standard repair.
Most cap, flashing, and crown repairs are completed in a single visit of three to five hours. Liner installation typically takes a full day. We schedule repairs around Ontario’s mild weather patterns, but winter rain can occasionally push a roof-related job by a day or two.
Yes. Many Ontario homes have gas inserts, and we inspect the venting, check the cap and screen, and confirm the unit is drafting safely. Gas inserts still need annual inspection because the venting can corrode, especially in Ontario’s dry climate where metal sits exposed for long stretches between uses.
If your chimney hasn’t been looked at in years, or if you’ve noticed water, rust, or animals around the flue, call Mayflower Chimney Sweep at (877) 819-0285 for a free estimate. We serve Ontario and the surrounding Inland Empire, and we tell you exactly what you need and what can wait.
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
"Cap keeps the birds out now, which after two springs of scratching noises is worth every penny."
— Renee Doyle"Swept it, capped it, and installed a proper damper. The downdraft smell in the summer that we'd lived with for years is gone."
— Kurt Walsh"Crown was cracked and taking water. Repaired it rather than quoting a rebuild, which the previous company had pushed hard for."
— Henry Nguyen