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 Sunnyvale
A chimney sweep in Sunnyvale typically costs between $189 and $329 for a standard open masonry fireplace, and most jobs are done in 60 to 90 minutes. If you’re in a 1950s or 60s ranch home with an original clay flue liner, expect a slightly longer visit: those chimneys need a slower, careful sweep and often reveal cracks or crown damage worth photographing. We’re Ashby Chimney San Jose, and we serve Sunnyvale homeowners directly. Our team has been doing this since 2002 under the Kingswell Guarantee, and we put every price in writing before the brush touches your flue. Call (669) 266-5073 to book a sweep or just ask questions about the fireplace you’ve got.
Why Ashby Chimney San Jose Is Sunnyvale’s Preferred Chimney Sweep Company
Sunnyvale keeps us honest. The ranch homes here, especially the Cherry Chase, Raynor Park, and Serra Park tracts, were built when a single clay flue tile and a basic masonry crown were standard. That means when we show up, we’re usually the first people to look inside that chimney in decades. Homeowners appreciate that we don’t treat a 60-year-old flue the same as a newer one in Santa Clara or Cupertino. We background-check every technician, and the person who walks through your door is uniformed and carrying clear photo gear because if we recommend a repair, you’ll see the evidence yourself, not take our word for it.
Our reputation in Sunnyvale comes from showing up in the window we said, leaving the hearth cleaner than we found it, and standing behind every repair with the 365-Day Done Right Promise. If a covered repair fails, we come back at no charge. That’s not a sales line. It’s the Kingswell Way: say the price, show up, leave it cleaner, put the guarantee in writing, and come back if it fails. The name Ashby carries ash right in it, fitting work, given our team is the one cleaning it out.
Styles & brands we work with
Fireplace Cleaning in Sunnyvale
Fireplace Cleaning in Sunnyvale is different from what a generic sweep in a newer build requires. Most of the fireplaces we clean here sit in post-war ranches with wood-burning masonry boxes and straight clay flues. The job starts with laying drop cloths and protecting the hearth, then a full interior sweep of the smoke chamber, damper, and flue, followed by removing soot and creosote from the firebox. In Sunnyvale a standard fireplace cleaning runs $189 to $279 when the flue is in good shape. If we find heavy glazing or a cracked tile, the price for the extra work gets written before we do it. No surprises at the door.
Creosote Removal
Creosote is the real reason to sweep, and in older Sunnyvale fireplaces it builds differently than people expect. Because these fireplaces get used mostly for ambience during the mild, wet winters, fires often burn low and slow. That produces first-degree and sometimes second-degree creosote that bakes onto the clay liner. We remove it with rotary tools suited to the liner age, never forcing a brush through a flue we haven’t inspected.
Soot Removal
Soot is the softer, flakier buildup from wood and paper, and it’s what makes the hearth look dirty before anything else. In open fireplaces without glass doors, soot collects on the smoke shelf and around the damper. We clean it out and check the damper seal while we’re there. A damper that doesn’t close fully after the fire goes out is a common source of draft complaints in Sunnyvale living rooms.
Chimney Services in Sunnyvale
Chimney Services in Sunnyvale include sweeping, but they also include the parts of the job a homeowner never sees until there’s a problem: crown inspection, flashing check, and flue liner assessment. We photograph every chimney we service and keep those images on file, so the next time we visit, we can show you what’s changed. A standard sweep with a visual inspection starts at $189 in Sunnyvale. If we recommend a Level 1 Inspection on top of that, it adds $99 to $149 depending on the chimney’s height and access. We write that price down before we open the crate.
Level 1 Inspection
A Level 1 Inspection is what every Sunnyvale fireplace needs if you’ve been using it once or twice a week through winter and nothing has changed. We check the readily accessible parts of the chimney: flue, damper, firebox, crown, and the visible exterior masonry. Most sweeps include it, but if your flue hasn’t been cleaned in years, we may recommend the Level 1 before we sweep so we know what’s in there.
Level 2 Inspection
A Level 2 Inspection is what we recommend when we find cracked flue tiles, when a home has changed hands, or when a Sunnyvale homeowner had minor seismic settling they never saw until water stained the ceiling. It involves a camera run down the flue and gives us footage of exactly what’s damaged and where. After a Level 2, if we recommend a liner repair, you’ll be watching the same video we’re looking at. We use HeatShield and Gelco systems for many of those repairs because they reseal cracked clay liners without ripping out your masonry.
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.
Trusted Brands We Service in Sunnyvale
We don’t stock whatever was in the van. Sunnyvale homeowners often ask what parts we use, and the answer is short: professional-grade materials from names the trade actually recognizes. We carry and install Famco rain caps, and we regularly use HeatShield and Gelco repair systems for clay liner cracks. Olympia Chimney components come up on the flashing and cap side. Because these older ranch chimneys almost never came with rain caps, our crews keep common Famco cap sizes on hand so we can install protection the same day in most Sunnyvale neighborhoods.
See the difference
Before
After
Before
After
Before
AfterCommon Chimney Sweep Problems We See in Sunnyvale Homes
- Cracked clay flue tiles from decades of minor seismic settling. Sunnyvale sits in an active region, and little shifts over 60 years are often enough to crack a single clay tile. A routine sweep is usually the first time anyone sees it, which is why we photograph everything.
- Water-stained ceilings with no obvious roof leak. A cracked crown on an original masonry chimney lets rain seep down around the flue. We follow the water back to its source, then fix the crown and seal it properly.
- Heavy creosote from low, slow fires. Sunnyvale winters are mild, so fires are often small and set for ambience. Those cold, smoky fires load the flue with creosote faster than a hot fire would. Homes using a wood stove as primary heat in the more rural edges of Sunnyvale may need a sweep twice per season.
- No rain cap on an original clay flue. Most 1950s and 60s Sunnyvale tracts were built without them. Rain, birds, and debris go straight into the flue, and the first heavy winter rain makes the problem visible. We fix this with a proper cap, not a piece of mesh zip-tied to a tile.
Pricing for Chimney Sweep in Sunnyvale, CA
A standard chimney sweep in Sunnyvale runs $189 to $279 for a single open fireplace with a clean, accessible clay flue. If we’re dealing with heavy glazed creosote or a stubborn damper, costs move toward $329. Level 1 inspections add $99 to $149, and Level 2 camera inspections run $299 to $449 depending on flue height and roof access. Rain cap installation with a Famco cap starts around $149 including the part. If we find liner damage, repairs using HeatShield or Gelco typically start at $1,200 but get quoted only after you’ve seen the camera footage. Every estimate is free, written, and matches the final invoice. Call (669) 266-5073 for an exact quote.
We Also Serve Cities Near Sunnyvale
Our crews serve Sunnyvale directly, and we also cover Mountain View, Santa Clara, Cupertino, and Los Altos. If you’re checking whether we reach your street, call us. You can also read more about our full Chimney Sweep team, or see how we serve the wider area at Chimney Sweep in Sunnyvale.
Serving Sunnyvale, CA - Our Local Coverage Area
We’re based in the Sunnyvale 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 Sunnyvale
If you only burn occasional winter fires, an annual sweep is the right interval for most Sunnyvale homes. But if this is the first sweep in several years, expect creosote from the slow-burning fires these ranches tend to have. If you use a wood stove as primary heat, especially in the more rural edges of Sunnyvale, plan for a sweep every six months. Call (669) 266-5073 and we’ll help you set a schedule that fits your actual burn pattern.
A careful sweep will not damage a sound clay liner, but a careless one with an oversized metal brush can chip already-cracked tiles. That’s exactly why we inspect the flue before we touch it and why we go slowly on original ranches. We never force a brush through a flue we haven’t visually checked first. If your liner is already cracked, we’ll show you the photos and walk you through repair options like HeatShield or Gelco resealing.
Because the flue has never had one, rain has been falling straight into the chimney since the house was built. On a clay liner that’s already seen 60 years of weather, that water is how cracks spread and ceilings get stained. We recommend a proper Famco rain cap because it’s the cheapest way to slow down the exact damage Sunnyvale’s older chimneys suffer. Call us for a quote, and we’ll include the cap in the written estimate.
You may notice a strong, smoky smell that lingers, black tar-like texture on the damper or flue walls, or a fire that seems to pull harder but produce less heat. Those are all signs of glazed creosote. In Sunnyvale, this shows up often because homeowners run cool, decorative fires that never reach a hot enough temperature to burn off the early creosote. If you suspect it, don’t burn another fire until we’ve looked at it. A Level 2 camera inspection can confirm exactly how heavy it is.
Yes. Properly seasoned wood burns hotter and produces far less creosote than damp or green wood, and in Sunnyvale where the Mediterranean climate means wood can dry well if stored correctly, it makes a measurable difference. The difference shows up mostly in the first-degree creosote that builds on the flue walls. But seasoned wood does not remove the need for the annual sweep on a 60-year-old clay liner. Think of it as the difference between a light cleaning and a heavy one. Call (669) 266-5073 for a free estimate and a straight answer about what your flue actually needs.
Written by Nathan Corliss, Owner at Ashby Chimney San Jose, serving Sunnyvale since 2002.