Masonry repair
Sweep & inspection
Caps & crowns
Flue relining
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 Fireplace Repair Across Cupertino
Fireplace repair in Cupertino typically runs between $175 and $2,800 depending on what’s actually wrong, from a simple pilot assembly to a full firebox rebuild. Most repairs are diagnosed within an hour, and a written price comes before any work starts. Larger Cupertino properties, especially the 1960s – 1980s ranches and split-levels in Monta Vista and Seven Springs, often have multiple flues and masonry chimneys that haven’t been touched in decades. That’s exactly the kind of work our Fireplace Repair team handles regularly. If you’re in Cupertino and your fireplace has stopped working or something just doesn’t look right, call (669) 266-5073 and we’ll schedule a visit. Nathan Corliss leads our crew, and he’ll make sure you know the price before we turn a single wrench.
Why Ashby Chimney San Jose Is Cupertino’s Preferred Fireplace Repair Company
We’ve been repairing fireplaces since 2002, and Cupertino homeowners keep calling us back for one reason: we write the price down before we start. No revised invoice at the door. No surprise line items. The number you approve is the number you pay. Every repair also carries a written guarantee under the Kingswell Guarantee, which includes a free second visit if the repair fails inside the coverage period. That’s not an add-on. It comes with every job.
Our technicians are background-checked and arrive in uniform, so when you open your door in Seven Springs or off McClellan Road, you know exactly who’s stepping inside. When you call us at (669) 266-5073, a live person answers, 24 hours a day, seven days a week. No voicemail tag. No callbacks on Monday. For homeowners who have already been burned by no-show contractors or prices that doubled at the door, that predictability matters more than anything else. We operate as Fireplace Repair in Cupertino specialists, not a one-size-fits-all service, because the homes here have quirks that generic chimney companies don’t understand.
Styles & brands we work with
Wood Stove Installation in Cupertino
Wood Stove Installation in Cupertino usually runs between $2,200 and $5,400 for a standard stove with a new stainless liner, depending on hearth prep, chimney height, and whether we’re running a new flue or relining an existing masonry chimney. The older ranch homes in neighborhoods like Monta Vista often have perfectly good masonry fireplaces that just never get used, and homeowners want them converted to something that actually heats the room. We install the stove, run the liner, fit the proper cap and spark arrestor, and make sure the clearance to combustibles meets current code. Given Cupertino’s wildland-urban interface, a properly fitted spark arrestor is not optional on a wood stove install. It’s part of every quote.
What the Installation Includes
Every wood stove install starts with a camera inspection of the existing flue. We need to see what’s already there. In a lot of Cupertino homes built between 1960 and 1985, the original clay tile liner is cracked or missing mortar joints, and running a wood stove through that is a chimney fire waiting to happen. We’ll either install a new stainless liner sized for the stove or resurface the existing flue with HeatShield before anything goes back together. The written quote covers all of it.
Permits and Local Requirements
Santa Clara County and Cupertino’s building department require permits for most wood stove installations, and we handle that paperwork on your behalf. We don’t skip it, and we don’t tell you to skip it. A permitted install means your homeowner’s insurance stays valid and the stove gets inspected by the city after completion. If you’re near the foothills above Stevens Creek Boulevard, the WUI requirements are stricter, and we size the spark arrestor accordingly.
Gas Fireplace Repair in Cupertino
Gas Fireplace Repair in Cupertino typically runs $185 to $685 for common fixes like pilot assemblies, thermocouples, gas valves, and burner cleaning. Most Cupertino homes that still have their original fireplaces have converted them to gas logs at some point in the last 20 years, especially in the hillside neighborhoods where burning wood is less practical during the dry season. The problem is that the gas conversion only changed what burns inside the firebox. It didn’t do anything to the flue above it. We regularly find old creosote, corroded dampers, and cracked panels behind gas log sets in Cupertino homes.
Pilot Light and Burner Repairs
When a gas fireplace won’t light or the pilot keeps going out, the fix is often a dirty thermopile, a failed thermocouple, or a blocked burner orifice. We stock parts for most major brands and complete those repairs on the first visit in the majority of cases. Every repair gets written up with a price before we start, and if the pilot goes out again inside the guarantee period, we return at no charge.
Flue and Damper Condition on Gas Conversions
Here’s something specific to Cupertino’s housing stock: many of the original terracotta flue liners in 1960s and 1970s ranches were never cleaned after the gas conversion happened. Homeowners assume gas logs don’t create creosote, and they’re mostly right. But the old creosote from decades of wood burning is still up there. If you ever add decorative wood elements to the gas log set, that old glaze becomes fuel. We camera-inspect the flue on every gas repair call, and we’ll show you the footage so you can see exactly what’s up there.
Trusted Brands We Service in Cupertino
We work on fireplaces and stoves from all the common manufacturers you’ll find in Cupertino homes: Heatilator, Majestic, Napoleon, Regency, and Vermont Castings, among others. For chimney system repairs, we use materials from HeatShield for flue resurfacing, Gelco for dampers and caps, and Olympia Chimney for liners and venting components. We keep common replacement parts on the truck so a repair in Cupertino doesn’t get dragged out by a parts run to a supply house. When a HeatShield resurfacing is needed on a flue in Seven Springs, we schedule it fast because we stock the material locally and our crew knows the chimney geometries common to that area’s split-levels.
See the difference
Before
After
Before
After
Before
AfterCommon Fireplace Repair Problems We See in Cupertino Homes
- Spalling brick and eroded mortar joints on chimney crowns: Water gets into the crown during Cupertino’s wet Decembers and Januarys, then freezes and expands. The freeze-thaw cycle pops the brick face and cracks the firebox panels, which is why you see smoke backing into the house on a cold night.
- Unlined or clay-lined flues with hidden mortar joint deterioration: In Monta Vista and Seven Springs especially, many original masonry fireplaces have never had a Level 2 camera inspection. The clay liner looks fine from the top, but the mortar joints behind it are gone, letting heat and gases reach the surrounding framing.
- Gas log conversions with decades-old creosote still in the flue: When a wood fireplace becomes a gas fireplace, nobody cleans the chimney first. We peel out old creosote glaze with a rotary chain whip, then handle the damper and cap issues that come with it.
- Missing or undersized spark arrestors on hillside homes: Cupertino sits against the wildland-urban interface, and a Santa Ana wind event can carry sparks out of an unprotected chimney straight into dry brush. A proper spark arrestor sized for your flue is the single most important chimney safety feature on a hillside property.
Pricing for Fireplace Repair in Cupertino, CA
Here are straight numbers for Cupertino’s market. A damper repair or replacement typically runs $240 to $640. Firebox panel replacement runs $400 to $1,100 depending on the panel material and firebox size. A pilot assembly repair usually lands between $185 and $395. Flue relining with a stainless liner runs $1,800 to $3,600 for a standard single-story ranch, more for two-story homes with taller chimneys. HeatShield resurfacing, which we use often in Cupertino’s older masonry chimneys, runs $2,200 to $4,800. The biggest cost driver is access: a chimney on a steep roof above Stevens Creek Boulevard takes longer to scaffold than a chimney on a flat lot near De Anza College. We’ll give you a written price before work begins, and that’s the price on the invoice. Call (669) 266-5073 for a free estimate.
We Also Serve Cities Near Cupertino
We handle fireplace repair throughout the West Valley. If you’re in Saratoga, Sunnyvale, Mountain View, or Santa Clara, we send the same background-checked crew and extend the same written guarantee. The Kingswell Guarantee follows every job, not just the ones inside Cupertino city limits. Call us and tell us what your fireplace is doing, or not doing.
Serving Cupertino, CA - Our Local Coverage Area
We’re based in the Cupertino 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 Fireplace Repair in Cupertino
Once a year, even if you only burn a fire on Thanksgiving and Christmas. In Cupertino’s older ranch homes, the real issue isn’t frequency of use, it’s age of the flue and mortar joints. A quick camera inspection catches cracks before a fire does. Call (669) 266-5073 to schedule one.
Yes, if the original creosote was never removed. Gas logs don’t add new creosote, but the old glaze from decades of wood burning stays in the flue and becomes a hazard if you ever add decorative wood elements. We see this constantly in Cupertino’s converted 1970s ranches. A cleaning and camera check usually runs $185 to $350, and it’s worth it.
Third-degree creosote is a hard, glossy glaze that forms when chimney temperatures cycle between hot and cold, which happens a lot in Cupertino’s mild but damp winters. You can’t brush it out with standard chimney rods. We use a rotary chain whip system to break the glaze off the clay liner, and in some cases apply HeatShield to resurface the flue afterward. The cost ranges from $300 for a straightforward removal to $3,000+ if resurfacing is needed. We’ll show you the camera footage before and after.
Because the one time embers do leave it during a Santa Ana wind event is the one time dry brush below your property catches fire. Cupertino’s foothill neighborhoods sit against the wildland-urban interface, and a spark arrestor is your first line of defense. Missing or undersized arrestors are among the most common issues we flag on hillside homes above Stevens Creek Boulevard. Sizing and installing one runs $145 to $395 depending on flue dimensions.
Look for water stains on the ceiling around the chimney, efflorescence on the brick face, or a damp smell in the firebox after rain. Those usually point to crown cracks or failed flashing. We’ll camera the flue and inspect the crown from the roof, then show you photos of what’s leaking. Crown repair in Cupertino typically runs $600 to $1,400, flashing work $350 to $750. We’ll give you a written price before we touch anything.
If your fireplace in Cupertino is acting up, call us at (669) 266-5073. Nathan Corliss and the rest of the Ashby Chimney San Jose team will get you scheduled, show up when we say we will, and put the whole price in writing before the repair starts. That’s how we’ve done it since 2002, and it’s why homeowners across Monta Vista, Seven Springs, and the rest of the West Valley keep our number on the fridge.
Written by Nathan Corliss, Owner at Ashby Chimney San Jose, serving Cupertino since 2002.