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 starts with understanding the city’s split housing stock. Mantel Chimney Sweep has served Ontario since 2018, and we see two very different chimneys here: original 1950s-60s masonry fireplaces with cracked crowns and deteriorating clay flues, and factory-built metal fireboxes from 1980s-2000s stucco subdivisions that homeowners often assume are maintenance-free. Neither is true. Call (844) 821-5749 when you need a chimney company in Ontario that can actually fix what it finds, not just sweep and leave you a list of problems.
Why Ontario Homes Are Different
Ontario’s housing stock was built in two distinct waves, and each creates its own chimney failures. The citrus-era ranches near downtown and throughout the 91762 and 91764 ZIP codes were built with true masonry fireplaces: brick or block structures with clay tile flue liners and poured concrete crowns. Those homes are now 60 to 70 years old, and many original flues have never been swept. Decades of hot, dry inland summers have baked the crown mortar until it spalls, and the clay liner sections have shifted from years of thermal cycling. When you add the Santa Ana winds that blow grit, palm fronds, and eucalyptus debris across the 91758 and 91798 corridors, spark arrestors and caps take a beating. The winds tear screens, loosen cap fasteners, and push debris into flues that then sits there for months.
The newer Mediterranean-style subdivisions stretching toward the airport and I-15 have a different issue entirely. Those homes use factory-built metal fireboxes inside framed chases with stucco exteriors. The firebox itself is a listed appliance, not a masonry chimney, and it ages differently: chase covers rust through, flashing separates at the roofline, and the galvanized pipe sections inside the chase can come apart. Because Ontario’s winter fire season is so short – a handful of fires between November and February – creosote accumulation is rarely the emergency. The bigger seasonal problem is critters. Dry summer heat plus damaged caps means roof rats, birds, and wasps move into unused flues, and the first “strange noise in the chimney” call of fall is more common in Ontario than any smoke complaint.
Styles & brands we work with
Our Main Ontario Services
Most Ontario homeowners call us for one of two reasons: the fireplace hasn’t been cleaned in years, or the dryer is taking forever to dry clothes. Here’s what each service involves in Ontario specifically.
Chimney Sweep in Ontario
An Ontario chimney sweep is less about heavy creosote and more about clearing what the Santa Ana winds and local pests leave behind: palm fronds, eucalyptus bark, bird nests, rat droppings, and wasp hives inside the flue and around the cap. We also inspect the cap, crown, and liner during every sweep, because a 60-year-old clay flue in an Ontario ranch home can’t be evaluated by vacuuming alone. Get the full picture on our Chimney Sweep in Ontario page.
Dryer Vent Cleaning in Ontario
Dryer vent cleaning in Ontario addresses one of the most common household fire hazards, and it’s especially relevant here because many 1950s-60s Ontario ranches have long, multi-turn dryer duct runs through attics or crawlspaces that trap lint quickly. A clogged vent also pushes moist air back into the laundry room, which matters in a city where summer heat already strains dryers. We clear the full run from dryer to exterior cap. See Dryer Vent Cleaning in Ontario for details.
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, CA is driven by two forces: the age of the original clay flue and crown on 1950s-60s ranch homes, and the rusted chase covers and separated flashing on 1980s-2000s factory-built chimneys. Neither problem fixes itself. A cracked crown lets water into the masonry, which then erodes the mortar joints and can eventually let flue gases seep into wall cavities. Mantel Chimney Sweep does full Chimney Repair in Ontario, not just inspections, and we use materials from HeatShield, Gelco, and Olympia Chimney because patch-and-paint approaches fail within a season or two in this climate.
Chimney Cap Installation
Signs you need it
You hear birds or rats in the chimney, see debris falling into the firebox, or notice water streaking down the flue walls after Santa Ana wind events.
What it costs in Ontario
Chimney cap installation in Ontario typically runs $180 to $340 depending on flue size and whether a custom bracket is needed for a Spanish-tile roof profile.
How we do it
We measure the flue tile, select a stainless or copper cap sized for Ontario’s wind exposure, secure it with mechanical fasteners rather than adhesive, and test the fit before we leave.
Chimney Crown Repair
Signs you need it
You see hairline cracks or spalled concrete on the top of the chimney, or efflorescence staining on the masonry below the crown.
What it costs in Ontario
Chimney crown repair in Ontario runs $500 to $900 depending on whether we’re sealing hairline cracks or rebuilding the full crown with proper overhang and a bond break.
How we do it
We chip out loose material, build a form with the correct slope and drip edge, pour a reinforced crown mix, and apply a flexible waterproof sealant rated for Ontario’s UV exposure.
What Chimney Repair Costs in Ontario
| Item | Typical range in Ontario |
|---|---|
| Chimney cap installation | $180 – $340 |
| Chimney crown repair | $500 – $900 |
| Chimney liner installation | $1,200 – $2,800+ |
Liner replacement in Ontario varies the most because the older masonry homes often need a full DuraFlex flexible stainless liner sized to the existing clay flue, while a factory-built firebox might need only a section replaced. We give a written flat price before any repair work starts, and we show you camera footage of exactly what we’re recommending.
How do I know if my Ontario chimney liner is actually damaged?
You’ll see flaking clay pieces in the firebox, gaps between liner sections on our camera scan, or smoke staining on the chimney exterior. A cracked liner in Ontario is common in pre-1980 masonry chimneys, and HeatShield restoration can often repair it without a full rebuild.
Can a cracked crown in Ontario wait until next year?
No. A cracked crown lets water into the chimney structure, and Ontario’s dry summers plus occasional winter rains accelerate spalling. The repair is under $900 in most Ontario homes. Call (844) 821-5749 for a free estimate and we’ll show you the camera evidence either way.
Brands We Service in Ontario
We install and service chimney systems from HeatShield, DuraFlex, Gelco, Olympia Chimney, Famco, and Copperfield. We stock common cap sizes, crown sealants, and liner components for Ontario’s typical flue dimensions, so most repairs don’t wait on a parts order. See our brands for what we work with.
See the difference
Before
After
Before
After
Before
AfterPricing for Chimney Company in Ontario, CA
| Service | Typical range in Ontario |
|---|---|
| Chimney sweep | $149 – $249 |
| Chimney cap installation | $180 – $340 |
| Chimney cap replacement | $200 – $400 |
| Chimney crown repair | $500 – $900 |
| Chimney flashing repair | $350 – $700 |
| Chimney liner installation | $1,200 – $2,800+ |
| Dryer vent cleaning | $89 – $150 |
What pushes price up in Ontario is usually access: a steep Spanish-tile roof, a chimney on a two-story chase, or a chase cover that’s rusted through and needs custom fabrication. Every job gets a flat price before we start, and we never start work without your approval of the written number.
Neighborhoods We Serve in Ontario
We work across Ontario, including the older ranch tracts and the newer stucco subdivisions. If you’re in a neighborhood with HOA design standards, we can match cap finishes and chase paint so the repair doesn’t stand out.
- Downtown Ontario (91762)
- North Ontario (91758, 91798)
- South Ontario near the 60 (91761)
- East Ontario (91764)
- Cucamonga border communities
Most Ontario chimney repair jobs can be scheduled within one to two weeks, and sweeps are usually quicker.
Service Area – Cities Near Ontario
Mantel Chimney Sweep also covers the surrounding Inland Empire communities. We work in Montclair, CA, Upland, CA, Chino, CA, and San Antonio Heights, CA. If you’re in one of these cities or anywhere in the broader Ontario area, the same flat-price approach and camera-verified recommendations apply.
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
Yes. We cover 91762, 91764, 91798, and 91758, plus the surrounding unincorporated pockets around Ontario. If you’re unsure whether you’re in our area, call (844) 821-5749 and we’ll confirm in under a minute.
Most liner replacements and crown repairs in Ontario don’t require a city permit because they’re considered maintenance on an existing system. If your job does trigger a permit requirement, we’ll tell you before any work is scheduled and walk you through what’s needed.
Sweeps are typically within a week. Repairs depend on parts and the scope, but most Ontario jobs are scheduled within two weeks. Call (844) 821-5749 for the current schedule and a free estimate.
If your chimney needs more than a sweep, call Mantel Chimney Sweep at (844) 821-5749 for a free estimate. We serve Ontario with flat-price repair work, camera-verified recommendations, and materials built to last in the Inland Empire climate.
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
"Got a text with the technician's name and photo before he arrived. Small thing, but as a woman home alone during the day I actually really appreciated it."
— Yolanda Reyes"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."
— Beatriz Torres"Drop cloths everywhere, HEPA vac, and not a speck of soot on the carpet. I'd been dreading the mess for nothing."
— Michelle Brooks