Ontario chimneys live with ground that moves, dry seasons that raise the stakes, and coastal air that never fully dries out. Our techs sweep, inspect on camera, and repair yours properly, so the next fire burns in a flue known to be sound - licensed and insured, with free estimates.
Your information is kept private and used only for your chimney service request.
From the post-shake inspection to a full sweep before burn season, these are the six chimney services Ontario homeowners book with us. This page covers chimney in Ontario, CA end to end — the services, the local picture and the ZIP codes served.
Sweep & Cleaning
Chimney Sweep
The full professional sweep: rotary brushes scrub the flue from top to bottom while a HEPA vacuum keeps every speck of soot sealed in — the visit that keeps a chimney safe to burn in. Coastal Ontario chimneys get a close look at the damper and cap, where marine-layer damp rusts metal first. Chimney Sweep in Ontario, CA starts with a real look at the problem — never a guess over the phone.
Get a free estimate
Sweep & Cleaning
Chimney Cleaning
Dust and debris settle into an idle Ontario flue all summer long. Creosote, soot and ash removed from the flue, smoke shelf and firebox — the deep clean that kills the campfire smell and the fire risk with it. Chimney Cleaning in Ontario, CA is one call away, every day of the week.
Get a free estimate
Repair
Chimney Repair
Any chimney, any problem — leaks, cracks, crumbling brick, bad draw. Seismic cracks in mortar and flue tiles are the repair we diagnose most around here. Diagnosed on camera first, then repaired properly with the right materials. For chimney repair in Ontario, CA, one call books the visit and a local tech takes it from there.
Get a free estimate
Inspection & Care
Chimney Inspection
A full inspection of flue, liner, cap, crown, flashing and firebox — camera inside the flue, with a plain-language report of what is safe, what is not, and what can wait. Chimney Inspection in Ontario, CA starts with a real look at the problem — never a guess over the phone.
Get a free estimate
Install & Replace
Chimney Cap Installation
A quality stainless cap keeps rain, birds and sparks where they belong. Fitted to your flue, secured properly, and screened against animals. In San Bernardino County, the cap is fastened against dry seasonal winds that work a loose fitting open and blow debris in underneath it. It is why chimney cap installation in Ontario, CA keeps getting recommended to neighbors.
Get a free estimate
Repair
Chimney Liner Repair
Cracked tiles, gaps at the joints, a liner that is shifting — liner faults found on camera and repaired so hot gases stay inside the Ontario flue where they belong. In Ontario, ground movement is the liner fault we find most often on camera. Booking chimney liner repair in Ontario, CA takes one call, and the tech arrives with everything the job needs.
Get a free estimateNeed something else — a damper, a blower, a smoke problem, a bird in the flue? We cover all 27 fireplace specialties. Call (888) 258-0797 and describe it.
A chimney in Ontario lives with California all at once - ground that shifts, a dry season that punishes creosote, and coastal damp that soaks masonry and rusts metal. This is what we actually find here, and what we check on every visit.
A dry California season turns ordinary creosote buildup into a serious flue-fire risk, and a flue fire throws sparks and embers onto a dry roof. A swept, inspected flue and a sound, screened cap are the two defenses a Ontario chimney has - both are checked on every sweep visit.
Coastal fog and marine layer keep chimneys damp for months at a time in Ontario. Moisture soaks into brick and mortar, rusts dampers and caps, and leaves a stale, sour smell in a flue that never fully dries. We check the metal and masonry the damp reaches first.
Salt-carrying air corrodes metal chimney caps, flashing and damper parts faster than inland parts ever wear. A rusted-through cap lets rain straight down the flue, and a failed damper wastes heat all winter. We inspect the metal most sweeps skip and replace what is quietly rusting through.
Older California homes often carry original masonry chimneys with softening mortar, older dampers and flues built to another era. They are worth keeping and worth checking: cracked joints and worn firebox brick are repairable when caught early, before heat and weather widen the damage season after season.
Ontario sits in San Bernardino County, and the ZIP list at the bottom of this page covers 5 serviceable ZIP codes — 91710 through 91764. The closest served neighbors are Montclair, Chino, Upland, and every one of them is covered by the same crews, the same day, under the same number: (888) 258-0797.
Same-day service, free estimates, licensed & insured — and a flue you can see on camera, clean from top to bottom.
Dry conditions raise the cost of a flue fire: sparks and embers land on a dry roof and dry landscaping. Keeping creosote swept out, the liner sound and a screened cap fitted lowers that risk a great deal. If your Ontario chimney has not been swept in a year, do it before burn season, not during it.
In many California areas, air-quality rules restrict wood burning on certain bad-air days, and the rules vary by area. Check your local air district on a still, hazy day before lighting up. What we can do is keep your chimney swept and sound, so on the days burning is allowed, your fire burns cleanly and draws properly.
At least once a year if you burn regularly, and after roughly every cord of wood burned. Evening-and-weekend fires and low, smoldering burns lay down glazed creosote faster than hot, steady fires do. In a dry season that buildup is the main flue-fire risk, so sweeping is fire prevention here, not just housekeeping.
Yes. The liner is what keeps heat and exhaust gases inside the flue and away from framing and the rooms the chimney passes. Cracked tiles or gaps at the joints let both escape where they should never go. Liner faults are invisible from the firebox, which is why we diagnose them on camera first, then repair the sections that failed.
Do not light a fire. Nests block the flue, and a blocked flue pushes smoke and carbon monoxide back into the room. Dry nesting material in a California flue is also fuel. We clear the flue safely, check the liner for damage, and fit a screened cap so birds and debris stay out for good.
No — and be wary of anyone who does. Every chimney fails differently, so a phone price is a guess that changes at your door. Our estimates are free: a tech looks at the actual problem, then gives you one clear price before any work starts.
Chimney Service Co is a national company with local technicians serving Ontario street addresses across the ZIP codes below — same-day service and free estimates, every day 8 AM – 8 PM. More of California is covered from our California page. The Ontario list below covers 5 ZIP codes, 91710 through 91764.
Don't see your ZIP? Ontario also uses P.O. Box and single-organization ZIP codes that have no street addresses — call (888) 258-0797 and we will confirm coverage for your street address on the call.
Also serving nearby: Montclair, CA · Chino, CA · Upland, CA · Claremont, CA · Chino Hills, CA · Pomona, CA.
Message sent.
Thanks — we'll get back to you shortly. Need it faster?
