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 Los Gatos
Need a chimney sweep in Los Gatos without the no-show or the price that doubles at the door? A standard fireplace sweep in Los Gatos typically runs $180 – $340, and a home with two fireplaces and a gas insert in the same chimney chase usually lands between $340 and $550 depending on flue access and creosote volume. Call (669) 266-5073 and you’ll get a live person 24/7, plus a written price before work starts. Ashby Chimney San Jose has been doing this since 2002 under the Kingswell Guarantee, and our crews know Los Gatos chimneys better than any company working from a spreadsheet.
What makes Los Gatos different isn’t the weather. It’s the flues. Victorian duplexes downtown, mid-century ranches off Highway 9, custom hillside estates above Kennedy Road – each one has its own set of chimney problems, and a one-size-fits-all sweep leaves things behind that shouldn’t be left. Our Chimney Sweep team sees the repeating failures. That’s why we put the price in writing, show up in the window we promised, and back every repair with a written guarantee. You’ll see the camera footage. You’ll see the draft test. You won’t guess.
Key Takeaways
- Most single-flue sweeps in Los Gatos run $180 – $340; multi-flue or shared Victorian chases cost more.
- Homes with two fireplaces plus a gas insert need a scheduled annual inspection, not just a sweep every few years.
- Winter rain in Los Gatos saturates creosote and makes it more corrosive to masonry liners.
- Every Ashby job includes a written price before work starts and a written guarantee when it’s done.
- Call (669) 266-5073 – a real person answers around the clock.
Styles & brands we work with
Why Ashby Chimney San Jose Is Los Gatos’s Preferred Chimney Sweep Company
Los Gatos homeowners have been burned before, and we don’t mean by a chimney fire. A crew that didn’t show. A quote that changed after the ladder went up. A liner repair that cracked again six weeks later. Nathan Corliss runs Ashby Chimney San Jose with a simple rule: say the price first, do the work exactly as described, and put the guarantee in writing before you leave the driveway.
Here’s the Kingswell Way, named for the standard every one of our independently owned shops operates under. Say the price. Show up in the window. Leave the job cleaner than you found it. Put the guarantee in writing. Come back if it fails. That last part isn’t a slogan. If a covered repair fails inside the guarantee period, we return and fix it at no charge. That’s the 365-Day Done Right Promise, and it’s included with every job we do in Los Gatos.
No voicemail loops. No callback forms. A live person answers at (669) 266-5073 around the clock. When you book a sweep in Los Gatos, you’ll know exactly who’s walking into your home: a background-checked, uniformed technician. Dispatch and scheduling are coordinated from our Bay Area office, and the crew arriving at your door serves Los Gatos locally. That means they know where to park a service van on Santa Cruz Avenue, how to access a rear flue on a hillside estate without trampling landscaping, and which downtown Victorians have the shared-flue setup we’ll talk about below.
We’ve been at this since 2002, and a big part of our repeat business in Los Gatos comes from homeowners who called someone else first and got halfway through a sweep before realizing the job was over the technician’s head. Ashby carries the trade’s real materials – DuraFlex liners, HeatShield resurfacing compound, Gelco sealant, Olympia Chimney components, and Famco caps. Not whatever happened to be left in the van.
Chimney Sweep Services in Los Gatos
Chimney Sweep Services in Los Gatos mean more than running a brush up a flue. A proper sweep here includes a full mechanical cleaning of the flue, smoke chamber, damper assembly, and firebox, followed by a visual check of the flue liner and chimney cap. In Los Gatos, where a single home may have two or even three appliances venting into one chase, we sweep and isolate each flue so residue from a wood-burning fireplace never contaminates a gas insert on the other side. The first answer is the honest one: a single-flue sweep in Los Gatos runs $180 – $340, and the number climbs once you’re dealing with multiple entry points and a shared smoke chamber.
Multiple Fireplaces, One Chase
Los Gatos hillside estates rarely have just one fireplace. Two wood fireplaces and a gas log insert in the same chase means three venting paths, one shared smoke chamber, and a creosote profile that changes depending on which appliance burned last. We sweep all three separately and run a draft test to confirm each flue pulls independently. If the draft test shows cross-pull, we’ll show you on camera and explain exactly what to do next – even when the honest answer is “nothing yet.”
Annual Sweep and Creosote Removal
For homes with multiple appliances, an annual sweep isn’t optional. It’s how you catch second-degree creosote in the upper flue before a Spare the Air inversion traps smoke against the hills. Los Gatos’s winter rain saturates creosote and makes it corrosive, so we time our recommendations around what your flue actually shows us, not around a generic calendar. Chimney Sweep in Los Gatos means we see homes year-round, not just in October.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Chimney Cleaning in Los Gatos
Chimney Cleaning in Los Gatos is the part people think about – remove the soot, the creosote, the debris. For most Los Gatos homes, a standard cleaning runs $180 – $340, and it includes exactly that: a mechanical brush sweep of the flue, a hand-cleaned firebox, a vacuumed smoke chamber, and a camera report so you can see the flue we just cleaned. No upsell script. No “we found something in your flue” routine based on a blurry phone photo. You get footage.
Shared Flue Cleaning for Downtown Victorians
In older downtown neighborhoods among Los Gatos’s Victorian-era homes, we regularly find one chimney serving two fireplaces – often in duplexes where the upstairs and downstairs units share a single masonry flue. That configuration needs more than a standard sweep. We clean each fireplace’s entry point separately, pull the damper assemblies, and isolate both sides so creosote and soot don’t migrate from one unit’s firebox into the other’s. A crew from out of the area may not even recognize the setup. We look for it on every downtown Los Gatos job.
Fireplace Cleaning for Gas Inserts and Conversions
A gas insert doesn’t burn wood, but it still produces residue, and it often shares a flue with a wood-burning fireplace in Los Gatos mid-century ranches. We clean the gas appliance’s venting run, check the termination cap, and confirm the damper isn’t rusted into place. A standard sweep that skips a rusted damper in the secondary flue is exactly how a gas insert backdrafts into the living room on the first cold rain. We won’t let that be the way you find out.
Trusted Brands We Service in Los Gatos
The flues in Los Gatos homes carry the names of the trade’s best components, and we stock matching parts for local jobs. HeatShield is our first call for resurfacing deteriorated clay liners without a full tear-out. Gelco sealant handles smoke-chamber parging and spalled masonry repairs. Famco caps keep rain and oak leaves out of the flue on hillside properties, and Olympia Chimney supplies the prefab components we spec on mid-century and newer construction. Keeping these brands in local rotation means we don’t have to order from a warehouse and make you wait two weeks for a crown repair. The parts are on the truck, and the technician knows which material fits which flue type in Los Gatos.
What matters more than the brand name is whether the person installing it stands behind the work. We do, in writing. The Kingswell Guarantee covers every repair we complete, and if something we installed fails inside the guarantee period, we come back and fix it at no charge. That’s not a warranty add-on. It’s how we operate.
See the difference
Before
After
Before
After
Before
AfterCommon Chimney Sweep Problems We See in Los Gatos Homes
- Shared-flue cross-contamination in downtown Victorians. Two fireplaces, one chimney, and a technician who treats it like a single-family flue. The upstairs unit gets swept, the downstairs fireplace keeps its creosote, and the next fire pushes that residue into the neighbor’s living space. We isolate both entries on every shared flue.
- Second-degree creosote in hillside prefab chimneys. Los Gatos homes on ridges above town get colder flue walls and quicker creosote build-up. A crew that cleans only the visible firebox misses the glazed creosote in the upper flue – the exact material that can ignite during a Spare the Air inversion.
- Rusted dampers on mid-century ranches with gas inserts. The damper in a secondary flue rusts open or shut, and no one catches it during a quick sweep. First cold rain of the season, and the gas insert backdrafts carbon monoxide into the living room. We check every damper we can access, not just the main one.
- Wet creosote from winter rain cycles. Los Gatos gets real rain from December through February, and when it soaks creosote inside a clay liner, the residue turns corrosive. That’s a $180 sweep that becomes a $2,500 liner repair if it’s ignored. We’d rather tell you what we see now than bill you for what we saw too late.
Pricing for Chimney Sweep in Los Gatos, CA
Here are the actual numbers for Los Gatos. A standard single-flue sweep with a wood-burning fireplace runs $180 – $340. A home with two fireplaces plus a gas insert in the same chase lands between $340 and $550, depending on flue access, ladder requirements on a hillside lot, and how much creosote has to come out. A Level 1 inspection is often included with a sweep at no extra charge on the same visit. A Level 2 inspection – the one we recommend after an earthquake, a chimney fire, or when you’re buying a home – runs $250 – $450 and includes a full camera scan of the interior flue.
What changes the price: roof pitch and access on a Los Gatos hillside, multiple flues in one chase, heavy glazed creosote that needs extra brush passes, and whether we’re pulling a rusted damper or removing an animal nest first. What doesn’t change the price after we quote it: anything. You get a written price before work starts, and the invoice matches it at the end. Call (669) 266-5073 for a free estimate – a person answers the line.
We Also Serve Cities Near Los Gatos
Our crews work across the West Valley and South Bay. You’ll find us sweeping flues in Los Gatos today, Saratoga tomorrow, Campbell and Cupertino through the week, and Santa Clara when the older ranch homes there come due. Same written pricing. Same live-answer phone. Same guarantee on every repair.
Serving Los Gatos, CA - Our Local Coverage Area
We’re based in the Los Gatos 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 Los Gatos
Once a year, and inspection should happen at the same time. With three venting paths in one Los Gatos chase, multiple builds of creosote form at different rates depending on which appliance you use most. The gas insert produces acidic residue that sits against the flue walls year-round. The wood-burning fireplaces produce creosote that wet rain makes more corrosive. Skip a year and you’re not guessing what’s in there – we’ll tell you what’s in there, on camera, with a recommendation that’s honest about what can wait. Call (669) 266-5073 to book your annual sweep.
No. A single sweep pulls residue through one flue exit and leaves the second fireplace’s entry off the brush path entirely. In a downtown Los Gatos Victorian with a shared chimney, both fireplace entries have to be swept individually, the dampers on both sides pulled, and both flues isolated before we’re done. A standard sweep that treats it as one fireplace is exactly how cross-contamination goes unnoticed for a season. We charge for both flues because we clean both flues. That’s the difference.
Yes. Los Gatos winter rain saturates creosote, and wet creosote is both harder to remove and more corrosive to a clay flue liner. If it’s soaked long enough, the residue glazes against the flue wall and needs mechanical rotary brushes instead of a standard wire brush. Left unchecked through a rainy season, that corrosive creosote is what eats through a clay liner wall and turns a $250 sweep into a $2,800 resurfacing job. We’d rather catch it in the first season. Call (669) 266-5073 and we’ll bring the camera.
Yes, and it’s common in Los Gatos ranch homes. The insert vents through an existing masonry or prefab chimney, but the install has to be done right: the flue needs to be sized for gas appliance exhaust, the damper has to be locked open or removed, and the termination cap has to prevent rain intrusion. A gas insert also needs its own annual cleaning. The exhaust is cooler than wood smoke, so more condensation forms inside the flue, and that condensation is acidic. If the damper rusts and the insert backdrafts into the house, that’s carbon monoxide, not just a cold fireplace. If you’re connecting a gas insert to an existing chimney in Los Gatos, have it inspected first.
Because the top of the flue is where the damage starts. A cracked or missing chimney crown on a Los Gatos hillside home lets winter rain run directly down the interior walls of the chimney chase, soaking the flue liner and the creosote inside it. That moisture works its way into the clay liner and the masonry behind it, and over one or two rainy seasons you’ll be looking at a spalled liner, not just a crown patch. The crown is a cheap fix compared to what water does once it gets inside. We’ll show you the crack on camera before we quote the repair – and the repair comes with a written guarantee.
If you’ve got a chimney in Los Gatos that hasn’t been looked at in years, start with a phone call. A live person answers at (669) 266-5073, we’ll schedule a real arrival window, and you’ll get a written price before any work starts. That’s the Kingswell Way.
Written by Nathan Corliss, Owner at Ashby Chimney San Jose, serving Los Gatos since 2002.