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
Chimney sweep service in Ontario typically runs $149 – $229 for a standard inspection and cleaning, and most appointments can be booked within a few business days. We work throughout Ontario’s 91764, 91798, 91758, and 91761 ZIP codes, which means we know the tract housing stock off Holt Boulevard and the newer infill near the 91761 corridor equally well. Call (866) 321-6641 to get a straight answer on what your flue actually needs.

Here’s the thing about Ontario: most chimneys here don’t fail from creosote. They fail from sitting idle. The Inland Empire’s hot, smoggy basin means fireplaces burn lightly and rarely, so what accumulates in flues is wind-blown grit, leaves, bird nests, and rust – not the thick tar you’d find in a colder, wood-burning region. A sweep that only knows how to remove creosote misses the actual problem on most Ontario chimneys.
Our Chimney Sweep team is built around that reality. We inspect what’s actually there, not what a generic checklist says should be there.
Why Chimney Sweep Chino Is Ontario’s Preferred Chimney Sweep Company
We’ve worked enough Ontario tract homes to recognize the patterns: prefab metal fireboxes from the 1950s and 60s, factory-built flue sections that have quietly corroded for decades, dampers rusted in place. A technician who only knows masonry stacks will misdiagnose these systems. We don’t.
Our reputation in Ontario rests on showing homeowners exactly what the camera sees. Before we recommend anything, you’ll see the cracked flue section or the debris blockage yourself. No one should be asked to approve a repair they can’t verify, and we build every quote around that principle. Pat Delano started this company to make chimney work honest, and that’s the standard we hold on every Ontario job.
Response time to Ontario is usually within two to three business days, depending on season. Pre-sale inspection requests get prioritized, because we know escrow timelines don’t wait. One call to (866) 321-6641 is all it takes to get on the schedule.
Styles & brands we work with
- Sweep & inspection
- Caps & crowns
- Flue relining
- Masonry repair
- Gas fireplace service
Gas Fireplace Cleaning in Ontario
Gas Fireplace Cleaning in Ontario usually means servicing a prefab unit or an insert that was retrofitted into an original wood-burning firebox, which is the standard setup in mid-century tract homes across the city. The job involves removing the glass, cleaning soot off the interior panels, checking the burner and pilot assembly, vacuuming the firebox, and inspecting the flue for debris. A typical cleaning runs $159 – $249 depending on whether it’s a direct-vent unit, a vented log set, or a full insert.
Ontario homeowners often assume a gas fireplace never needs servicing. That’s only true until it isn’t. Gas logs still produce soot, and that soot deposits on the glass and logs even when the flame looks clean. On the maintenance side, a furnace that hasn’t been cleaned in a few seasons will cycle on and off unpredictably, and the first cold night is when you’ll notice.
What We Check During Gas Service
We inspect the pilot assembly, thermocouple, and burner ports for blockage, then verify the flue is drafting correctly. On many Ontario units, the flue serves double duty as the exhaust path for gas logs, and any obstruction – a bird nest, a wasp nest, wind-packed leaves – becomes a carbon monoxide problem fast. The camera inspection covers that.
When an Insert Needs More Than Cleaning
If a gas insert was installed into an original prefab firebox decades ago, the surrounding flue may have rusted while the insert kept the front looking fine. We’ve replaced rusted dampers on gas inserts throughout the 91762 corridor. A Famco damper fits most factory-built units and gets the flue sealing properly again, which matters for draft and efficiency even on gas.
Chimney Maintenance in Ontario
Chimney Maintenance in Ontario should follow a different rhythm than in colder climates: an annual debris check and damper inspection matters more than a deep creosote sweep, because fires here are occasional and the flue sits idle for months at a time. A routine maintenance visit runs $129 – $199 and includes a visual inspection of the flue, damper operation, cap condition, and firebox integrity.
If the flue hasn’t been opened in years, expect us to find something. Birds and squirrels favor Ontario’s uncapped flues, especially in older neighborhoods where chimney caps rusted off years ago. We’ve pulled nests and wind-packed grit out of flues off Holt Boulevard, Euclid Avenue, and throughout the 91764 ZIP code more times than we can count.

Annual Sweep and Fireplace Cleaning
An annual sweep in Ontario usually takes 45 to 90 minutes and leaves the firebox, damper, and accessible flue surfaces clean. We use poly brushes on prefab metal flues rather than masonry-style wire brushes, which is a detail most generalists get wrong and one that can damage factory-built systems.
Level 1 Inspection
A Level 1 Inspection covers the accessible portions of the chimney interior and exterior without special equipment or disassembly. It’s what we recommend for homeowners who use the fireplace occasionally and just want confirmation that the flue is clear and the damper is functioning before the next burn.
Level 2 Inspection
A Level 2 Inspection adds camera scanning of the flue interior and is the inspection required for pre-sale transactions in Ontario. When escrow hinges on the chimney report, this is the one that matters. We find cracked prefab flue sections and rusted dampers on camera all the time in mid-century tract homes, and buyers need to see that before closing.
Trusted Brands We Service in Ontario
We stock and install parts from HeatShield, Gelco, Olympia Chimney, and Famco because these are the product lines professional chimney contractors across the country rely on, not hardware-store substitutes. When a prefab flue in an Ontario tract home needs resurfacing, HeatShield gives us a repair path that doesn’t require tearing out the whole system. When a damper is rusted open on a 1950s ranch, a Famco replacement fits and functions like the original. We specify products by name because materials matter, and Ontario homeowners deserve to know exactly what’s going into their chimney. Parts are sourced locally where possible, which keeps turnaround quick for Ontario customers.
See the difference
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After
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After
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AfterCommon Chimney Sweep Problems We See in Ontario Homes
- Debris-packed idle flues. Ontario fireplaces sit unused for months, and that’s when birds, squirrels, and wind-driven leaves move in. An uncapped flue in the 91764 or 91758 area will collect something every season, guaranteed.
- Rusted prefab dampers. The original dampers on 1940s-1970s tract home chimneys were never built to last 60 years. Most are rusted open or seized shut by now, which wastes heated air or blocks proper draft.
- Cracked prefab flue sections. Factory-built flue sections corrode from the inside in Ontario’s dry heat and smog. Hairline cracks only show on camera during a Level 2 inspection, and sellers often don’t know they exist until escrow.
- Retrofitted inserts with original flues. Ontario homeowners often put gas inserts into original prefab fireboxes without relining the flue. The result is a flue sized for wood being asked to vent gas, which drafts poorly and can trap exhaust.
Pricing for Chimney Sweep in Ontario, CA
A standard chimney sweep in Ontario runs $149 – $229. Gas fireplace cleaning runs $159 – $249. A Level 1 Inspection is $99 – $149, and a Level 2 Inspection with camera runs $199 – $299. Maintenance visits fall in the $129 – $199 range. If a repair is needed – a damper replacement, a chimney cap, a HeatShield resurfacing – we’ll show you the camera footage and give you a written quote before any work starts. Pre-sale sweep-and-certify packages for Ontario escrow situations run $199 – $329 depending on inspection level. Call (866) 321-6641 for an exact quote on your chimney, and we’ll walk you through it in five minutes.
We Also Serve Cities Near Ontario
Our service area extends from Ontario into the surrounding Inland Empire communities. We regularly work in Upland, Chino, Rancho Cucamonga, and Jurupa Valley, which means we’re familiar with the housing stock and building patterns across the whole region. If you’re in a neighboring city and need someone who understands mid-century tract chimneys, give us a call at (866) 321-6641. We’re the Ontario team that actually knows prefab systems.
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
Once a year for inspection and debris removal is right for most Ontario prefab systems, even if you burn only a few times per season. The flue is still exposed to wind, birds, and weather during the months it sits idle. A quick annual check catches blockages and rust before they become pre-sale inspection failures or, worse, a chimney fire. Call (866) 321-6641 and we’ll get you on the schedule before burning season.
A pre-sale sweep-and-certify in Ontario runs $199 – $329 and includes a Level 2 camera inspection, a sweep, and a written report you can hand to the buyer’s agent. Escrow timelines are tight, so we prioritize these appointments. The camera is the part that matters: it documents exactly what’s inside the flue, which protects both you and the buyer. Call (866) 321-6641 and tell us your escrow date – we’ll work backward from there.
That smoky smell on windy days is usually a draft reversal caused by a missing or damaged chimney cap, a rusted-open damper, or wind patterns interacting with the flue. Santa Ana winds push air down uncapped flues and stir up old soot and creosote inside. We see this all over Ontario, especially in the 91761 corridor where wind exposure is higher. A cap replacement plus damper check usually resolves it.
We service gas inserts and log sets as part of our standard gas fireplace cleaning service, no separate technician required. The work includes glass removal, burner inspection, log cleaning, and flue verification. Gas units in Ontario’s retrofitted prefab fireplaces need specific attention to the flue, because that original factory-built flue was designed for wood, not gas, and corrosion changes the draft. Call (866) 321-6641 for a quote on your specific insert.
First-degree creosote is flaky soot that brushes off easily, while third-degree is a hard, tar-like glaze that requires chemical treatment or mechanical removal and is a serious fire hazard. It matters differently in Ontario because most local fireplaces never build up third-degree creosote at all – the real threat here comes from debris and rust, not tar. But if you do have a glazed creosote situation, it needs professional attention and possibly a different removal method, and we’ll show you exactly what we’re seeing before we quote it.
Written by Pat Delano, Owner at Chimney Sweep Chino, serving Ontario since day one.
Ready to get your chimney inspected or cleaned? Call (866) 321-6641 for a free estimate. We’ll answer your questions directly, show you what the camera sees, and only recommend work your flue actually needs. Ontario homeowners have trusted us for years – let us earn that trust on your home.