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.
HeatShield Chimney Cleaning in Ontario, CA
We’re an independent HeatShield service provider working across Ontario, CA, and we specialize in exactly the kind of flue damage this city’s housing stock is known for. Most Ontario homes built before 1980 still have original clay tile liners, and those tiles crack from decades of thermal expansion in the dry Inland Empire heat. Our job is to evaluate what’s actually happening inside your flue before recommending a repair path. Call (877) 358-0941 to book a HeatShield evaluation or full relining service. Noel Strickland and our crew cover Ontario’s older tract neighborhoods, newer stucco subdivisions, and everything in between.
Why Ontario Residents Choose Us for HeatShield Service
HeatShield is a ceramic-based resurfacing system that seals cracked flue tiles from the inside, restoring a continuous venting surface without tearing out your chimney. We’ve been applying it across the Inland Empire for years – including Upland and nearby cities – and we work with it enough to know where it excels and where it doesn’t. That honest read is what homeowners in Ontario tell us they appreciate most.
Noel Strickland grew up in the Carbon Canyon corridor, learned heating and venting fundamentals through Chaffey College’s HVAC program, and has spent nearly two decades inspecting chimneys across the Pomona Valley. He’s the one who’ll show you the camera footage from inside your flue before we recommend anything, and he’s the first to say when a stainless liner makes more sense than a HeatShield application. For deeper background on how we handle HeatShield sales & service, see our brand overview page.
Styles & brands we work with
- Sweep & inspection
- Caps & crowns
- Flue relining
- Masonry repair
- Gas fireplace service
Common HeatShield Chimney Cleaning Problems We Solve in Ontario
Here’s what we run into most often in Ontario, and how each issue connects to this city’s specific housing and climate patterns.
- Cracked clay tile liners in post-WWII tract homes. Homes built in the 1940s through 1960s across Ontario’s east and south sides typically have original clay flue tiles. Decades of hot, dry summers followed by cooler winter nights cause those tiles to expand, contract, and eventually crack. When we recommend HeatShield, the goal is to seal those cracks into a continuous, smooth flue surface.
- Gas inserts hiding unlined or damaged flues. Many Ontario homeowners switched to gas logs without ever addressing the original clay liner behind them. Gas burns cooler than wood, but it still produces acidic moisture that seeps into cracked tiles. We find flue damage on gas-converted fireplaces all the time during our inspections.
- Spalling firebox mortar wearing down HeatShield coatings. In 1940s and 1950s bungalows near downtown Ontario, the firebox mortar has often been slowly breaking apart for decades in dry heat. That gritty, sandy debris erodes ceramic coatings at the smoke chamber transition if the firebox isn’t repaired first. We address the firebox before any relining work.
- Water intrusion through cracked crowns and flashing. Ontario’s winter rains, even when light, find their way through small crown cracks. Water that got behind a previous liner repair will eventually cause it to delaminate. We always inspect the crown and flashing before applying HeatShield, and we recommend waterproofing when needed.
- Santa Ana wind debris accumulating on chimney tops. Strong fall winds blow leaves, twigs, and dust onto crowns and into flues across the Inland Empire. Once that debris mixes with moisture, it accelerates liner deterioration. A proper cap and crown coating are part of any long-term HeatShield relining plan in Ontario.
HeatShield Service in Ontario: What Local Conditions Mean for Your Equipment
Ontario’s east and south-side neighborhoods have a specific pattern we don’t see as often in neighboring cities like Chino or Corona: original clay-tile flues that cracked from decades of thermal expansion, then settled into the hot, dry valley soil as the home’s foundation shifted. Homeowners who switched to gas logs years ago often have no idea the flue behind that insert is no longer venting safely. We start every HeatShield evaluation in Ontario with a camera scan, not a sweep, because the condition of the tiles determines whether a resurfacing job is even possible or if you need a stainless liner instead. That scan shows us gaps wider than the product’s rated tolerance, voids at the smoke chamber, or tiles that have shifted out of alignment. In some Ontario neighborhoods, particularly around downtown and the older east-side tracts, we regularly see flues where half the tiles are cracked and spalling, and the right call is a full stainless reline rather than forcing a HeatShield repair. For a broader look at the areas we cover, see our Ontario service area page.
HeatShield Models & Products We Service in Ontario
We work with the full HeatShield product line: HeatShield Cerfractory Flue Sealant, the HeatShield CeCure Sleeve Relining System, HeatShield 2000, and HeatShield Fireguard. For Ontario homes with offset or badly spalled flues, we often pair the Cerfractory sealant with a CeCure sleeve to bridge larger gaps and smooth out the flue run. We stock genuine HeatShield sealant and sleeve components locally and also handle HeatShield repair in Chino, so most Ontario relining projects don’t wait on shipping. When a flue is too far gone, we’re direct about it: a stainless liner from DuraFlex or a partial rebuild is the better path, and we’ll tell you that before quoting a HeatShield job. That repair-vs-replace call is based on flue condition, not on selling you a product.
See the difference
Before
After
Before
After
Before
AfterHeatShield Service Pricing in Ontario
HeatShield relining in Ontario typically falls between $3,500 and $5,500 for a single-story masonry chimney, depending on flue length, tile condition, and whether a CeCure sleeve is needed. Firebox repair adds $400 to $1,200 if spalling is present. Level 2 camera inspections, which we strongly recommend before any relining decision, run $175 to $350. The biggest cost driver is prep: if we’re dealing with decades of creosote, debris, and cracked tiles from an Ontario tract home, surface preparation takes longer, and that’s where the quality of the final bond is decided. Every estimate includes a written scope with the exact product we’ll use. Call (877) 358-0941 for a free quote on your Ontario chimney.
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 – HeatShield Chimney Cleaning in Ontario
Yes, in most cases, as long as the cracks are not so wide that the tiles have shifted out of alignment. HeatShield Cerfractory sealant is designed to fill and seal hairline to moderate cracks in clay tile liners, including the thermal stress cracks common in Ontario’s 1940s through 1960s housing. If our camera scan shows gaps wider than the product’s rated tolerance or tiles that have separated, we’ll recommend a CeCure sleeve or a stainless liner instead. Call (877) 358-0941 and we’ll do a camera scan before recommending anything.
Yes, and that’s exactly what our field vignette below illustrates. Gas inserts produce acidic moisture that accelerates the deterioration of already-cracked clay tiles behind them. We recently worked on a 1950s ranch-style home near downtown Ontario where the homeowner had run gas logs for years without a liner inspection. A Level 2 camera scan showed cracked clay tiles and spalled mortar joints at the smoke chamber. We prepped the flue and applied HeatShield Cerfractory sealant over the full run, then repointed the firebox and coated the crown against water intrusion. The homeowner now has a sealed flue properly rated for the gas logs they were already using.
Ontario’s heat cycling from hot, dry summers through cooler winters means flue tiles have already expanded and contracted thousands of times before we arrive. That stress pattern directly influences prep work: we need to remove all loose material before applying HeatShield, or the coating won’t bond. Santa Ana winds add debris and moisture intrusion through cracked crowns. A properly prepared substrate and sealed crown are what separate a HeatShield job that lasts from one that fails in three years. Call (877) 358-0941 to schedule a crown and flue inspection together.
No, and we’re direct about that. HeatShield is a masonry flue resurfacing system designed for clay tile and brick chimneys. Prefab metal fireplaces in Ontario’s newer stucco subdivisions have factory-built flues that are not candidates for HeatShield. If a prefab unit is damaged, we inspect the factory flue and recommend a manufacturer-approved repair path, usually a replacement component rather than a coating. Don’t let anyone sell you a masonry sealant for a metal flue. Call (877) 358-0941 and we’ll identify your system correctly before quoting anything.
HeatShield resurfacing seals existing clay tiles and is less invasive, less expensive, and faster to install. A stainless liner like DuraFlex replaces the entire flue path with a continuous metal run, and it’s the better choice when tiles are too badly spalled, misaligned, or when the flue is offset in ways that compromise a sealant bond. In Ontario tract homes with moderate cracking, HeatShield often solves the problem for several thousand dollars less than a full stainless reline. For severe damage, we recommend the stainless path even though it costs more. Our crew is trained in both systems, and we’ll show you the camera evidence supporting whichever we recommend. Call (877) 358-0941 for a free estimate with a written recommendation.
Service Areas Near Ontario
Our HeatShield service covers all of Ontario, including ZIP codes 91762, 91764, 91798, and 91758. We also serve Pomona, Rancho Cucamonga, Chino Hills, Chino, and parts of Corona for larger relining projects.
Book Your HeatShield Service in Ontario Today
A clean flue isn’t a luxury – it’s just what keeps the fire in the fireplace and out of the walls. If you’re in Ontario and wondering whether your chimney is safe to use, call (877) 358-0941 for a free estimate. We’ll schedule a camera inspection and give you a straight answer on what your HeatShield service will actually cost.
Written by Noel Strickland, Owner at Chimney Sweep Chino Hills, offering our Chimney Sweep in Ontario and the Pomona Valley.