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.
Fast, Reliable Chimney Sweep Across Ontario
A chimney sweep in Ontario, CA during the winter burn season runs roughly $189 – $285 for a standard fireplace, and most homes in the 91764, 91758, and 91761 zip codes can be serviced the same week. That price includes brushing the flue, removing creosote and soot, vacuuming the firebox and smoke chamber, and a Level 1 visual inspection of the accessible chimney structure. Mayflower Chimney Sweep serves every neighborhood in Ontario, from the mid-century tracts north of Holt Boulevard to the newer stucco developments south of the 60. Call (877) 819-0285 and we’ll schedule a sweep with a camera inspection you can actually see.
Why Mayflower Chimney Sweep Is Ontario’s Preferred Chimney Sweep Company
Ontario residents call us because most chimney companies here only sweep and leave. We find the problem and fix it, using components we can name and you can research. DuraFlex liners, HeatShield sealant, Copperfield caps and flashings. If a sweep turns up a spalled flue liner or a corroded cap on a 1960s ranch home off Euclid Avenue, our team repairs it. We don’t hand you a referral card and move on.
Nolan Crisp built our reputation on telling homeowners what we find in plain language, before any work gets priced. That matters in Ontario, where AQMD Rule 445 means most fireplaces sit dormant for months and problems hide until an inspection pulls them into the light.
Styles & brands we work with
Chimney Sweep Certified in Ontario
Chimney Sweep Certified work in Ontario means more than running a brush. It means inspecting what the brush reveals. Because most Ontario fireplaces go unused for months at a stretch under South Coast AQMD Rule 445, our sweeps regularly uncover aged creosote that has sat in the flue through the dry season, plus nests and debris from the long off-season. First-degree creosote, the dry sooty kind, brushes out quickly. Third-degree, the hard glazed tar, requires mechanical removal and sometimes a liner evaluation.
Expect to pay $189 – $249 for a standard sweep on a single-story Ontario tract home with straightforward roof access. Two-story homes, steep pitches, or chimneys with heavy third-degree creosote can run $275 – $340. Every sweep ends with a written condition report and photos, not a verbal shrug.
What Gets Cleaned During a Sweep
We brush the flue. We remove creosote from the firebox, smoke shelf, and damper assembly. We vacuum every surface with a HEPA-filtered collector, so the dust stays out of your living room. Then we run the Level 1 inspection that tells you whether the cap, flashing, crown, or liner needs attention.
When Ontario Homes Need This
Before the first fire of the season. Even if that fire comes once a year. A dormant chimney collects pests and dry creosote exactly like a busy one, and an inspection catches the damage before smoke backs into the house.
Gas Fireplace Cleaning in Ontario
Gas Fireplace Cleaning in Ontario covers a lot of homes that have given up on wood burning entirely because of no-burn days. A gas insert or gas log set still builds soot on the glass, dust and hair inside the burner, and – most critically – it can develop blocked or leaking venting without a single visible warning sign. A local Ontario service call for gas fireplace cleaning typically runs $150 – $220, and that includes disassembling the log set, cleaning the burner and pilot, wiping the glass, and checking the vent termination outside.
Venting and Cap Verification
We inspect the cap, the screen, and the vent run for blockage. Birds don’t care that you have a gas fireplace. They’ll nest in the termination collar on a 1990s stucco home in south Ontario just as fast as they will in a wood flue.
What Gas Inserts Hide
Gas inserts hide venting problems because the flame looks fine inside the glass. A blocked or corroded vent may still draft enough to keep the fire lit while pushing carbon monoxide into the home. We check the vent with a camera, not just a flashlight.
Trusted Brands We Service in Ontario
We stock and install components from Olympia Chimney, Famco, Copperfield, and DuraFlex, which means an Ontario homeowner with a corroded cap or a failed flashing doesn’t wait a week for a generic part to ship from somewhere else. We keep the materials our local jobs need, and we tell you exactly what brand and part number went on your chimney. You can hold us to that. If you’re comparing quotations for a sweep or repair in Ontario, ask other companies to name their liner or cap manufacturer. Most can’t. That tells you something.
Common Chimney Sweep Problems We See in Ontario Homes
- Dry-aged creosote from rare use. Because Rule 445 keeps wood fireplaces dark for months, the creosote that forms during the occasional evening fire stays put. It dries, it hardens, and it builds faster than you’d expect in a chimney that “barely gets used.”
- Nests and blockages in dormant chimneys. A cool, dark flue is a standing invitation. We pulled a full bird nest from a 1970s ranch home off Vineyard Avenue last season. The homeowner had lit one fire, and smoke filled the living room within minutes.
- Corroded galvanized caps and flashings. Ontario’s dry heat and temperature swings work on cheap metal every single day. Galvanized caps on older tract homes loosen, tear, and let water straight down into the chimney chase.
- Spalled flue liners in 1950s – 1970s masonry chimneys. Clay tile liners crack after decades. Nobody sees it because the fireplace is decorative most of the year. A Level 2 camera inspection is the only way to know before heat and sparks press against the crack.
See the difference
Before
After
Before
After
Before
AfterPricing for Chimney Sweep in Ontario, CA
A standard sweep for a wood-burning fireplace in Ontario runs $189 – $285. Gas fireplace cleaning lands between $150 and $220. If the sweep uncovers a repair, we photograph it, show you the image on the spot, and quote the fix separately. There’s no bundling a four-figure “liner package” into a sweep quotation. A Level 2 camera inspection, which we recommend for any Ontario home built before 1980 with the original flue, costs $149 – $225 as an add-on or standalone. That inspection is how we find spalling, cracked mortar joints, and hidden blockages before they become fires. Call (877) 819-0285 and we’ll give you a firm price before we touch the chimney.
We Also Serve Cities Near Ontario
Our crews cover Ontario and the surrounding Inland Empire communities, including Chimney Sweep services for homeowners in Chino, Rancho Cucamonga, Los Serranos, and Jurupa Valley. If you’re in one of those cities and need an Ontario-based team that stocks repair parts locally, we can usually schedule within the same week.
The Rule 445 Effect on Ontario Chimneys
Ontario sits in the South Coast Air Basin, and since 2017, the South Coast AQMD’s Rule 445 has banned wood burning on most winter days. For a lot of Ontario homeowners, that means the wood-burning fireplace is effectively a decorative feature with a flue attached. Which is exactly why our service calls look different here than they do in Big Bear or Wrightwood. We aren’t doing steady burn-season cleanouts for people who light a fire every night. We’re doing off-season inspections, nest removal, cap and flashing corrosion checks, and gas insert venting verification on homes where the firebox hasn’t seen heat in six months. The risk didn’t go away when the smoke stopped. It just moved into places homeowners don’t look.
On a 1962 ranch-style home off the 91762 side of town, we pulled a nest and a cracked galvanized cap off a masonry chimney whose original flue liner had begun spalling, then ran a Level 2 inspection that turned up failed flashing at the crown. We brushed out first-degree creosote from the firebox and smoke chamber, replaced the cap and flashing, and confirmed the damper seated properly. The homeowner had assumed the fireplace was fine because it never gets used. That’s the Ontario pattern in one sentence.
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 Sweep in Ontario
Yes, and in some ways you need it more than a household that burns wood weekly. A dormant flue collects nests, debris, and dry creosote that hardens in place for months. The chimney doesn’t get a “self-cleaning” burn hot enough to loosen anything. Once a year, have a sweep and Level 1 inspection on a mostly-decorative fireplace. The fire you do light, on the day the AQMD allows it, needs a clean, clear flue. Call (877) 819-0285 to schedule.
Usually the galvanized cap. Ontario’s dry heat and temperature swings warp and corrode thin metal faster than people expect, and once the cap fails, the crown and flashing are next because water now has an entry point. We check all three on every sweep, and we replace caps with Copperfield or Olympia components rather than the cheapest galvanized part available.
Yes. We clean the glass, log set, burner, and pilot assembly, and then we inspect the vent termination and cap outside. Gas inserts need different tools and a different eye than a wood flue, but the safety stakes are the same – a blocked vent on a gas fireplace can push carbon monoxide into the house. Ontario gas fireplace cleaning runs $150 – $220.
First-degree creosote is dry and sooty; it brushes out with standard sweeping tools. Third-degree is a hard, glazed tar that has baked onto the flue wall and requires mechanical removal, sometimes with chemical treatment first. In Ontario, we see first-degree creosote that has aged into a stubborn, hardened layer because the fireplace sat unused for months. Catching it at first-degree avoids the higher labor cost and liner damage risk.
We offer Level 1 and Level 2. A Level 1 is included with every sweep and covers the accessible parts of the chimney. A Level 2 camera inspection goes into the flue itself and costs $149 – $225. For any Ontario home built before 1980 with the original clay tile liner, we recommend a Level 2 the first time we’re on the roof. Level 3 inspections, which involve removing chimney structure, are referred to specialized masons when warranted.
Schedule Your Ontario Chimney Sweep
Call (877) 819-0285 and we’ll get a sweep on the calendar for your Ontario home, usually within the same week. You’ll get a straight answer on price, a camera inspection you can watch, and a written report with photos. If we find a repair, we’ll quote it separately and show you the evidence. No pressure. Just the flue, the cap, the crown, and the truth.
Written by Nolan Crisp, Owner at Mayflower Chimney Sweep, serving Ontario and the Inland Empire with sweep, repair, reline, and dryer vent services.