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.
The Alcott Chimney San Francisco Guarantee
We’ve been cleaning and repairing chimneys across San Francisco since 2002, and every job still comes down to the same thing: you should know exactly what you’re paying for, and what happens if something isn’t right. Our guarantee means every repair gets a written warranty, with no fine print and no negotiation required. If a repair fails during the coverage period, the second visit is free, period. That’s the 365-Day Done Right Promise, and it’s been part of how Ruben Castellano runs Alcott Chimney San Francisco from day one. We don’t make you argue for it, and we don’t hope you forget it exists.
What’s Covered
- Workmanship on every repair – If the repair we performed fails during the coverage period, we return and make it right at no charge.
- Written guarantee on every job – You’ll have the guarantee in writing before we leave, stating exactly what’s covered and for how long.
- Written price before work begins – No estimate games, no surprise line items at the end of a chimney sweep in San Francisco.
- Cleanup after every sweep – We lay down drop cloths, vacuum as we work, and leave your hearth cleaner than we found it.
- Technician identity confirmed before arrival – You’ll know the technician’s name and see their photo before we arrive, and they’ll show a photo ID badge at the door, every time.
- Parts and materials sourced to spec – When repairs call for new components, we install professional trade brands like DuraFlex, HeatShield, Olympia Chimney, Famco, and Copperfield, not improvised substitutes from a box store.
- Honest assessment of what can wait – We don’t recommend work your chimney doesn’t need. If a liner is safe to leave for another season, we’ll say so, and we’ll show you the camera footage to prove it.
Styles & brands we work with





Our Satisfaction Promise
If a customer isn’t satisfied with the work, the process is simple: call the office, tell us what’s wrong, and we’ll send a technician back to look at it. We don’t charge for the return visit when it’s on us, and we don’t make you navigate a call center to get it scheduled. The same person who answers the phone at 11 p.m. when something smells like smoke can start the make-it-right process the next morning. Ruben Castellano has been at this long enough to know that a chimney company’s reputation in San Francisco survives or dies on how it handles the jobs that didn’t go perfectly. The 365-Day Done Right Promise exists precisely because of that: a full year of accountability, written down, with a name attached to it.
Licensed & Insured Backing
Anyone can print a guarantee on a website. The reason ours means something is the licensing and insurance standing behind it. Alcott Chimney San Francisco is licensed and insured in the state of California, and every technician who steps onto a San Francisco property has passed a background check and identity verification before they ever see your address. That’s the Threshold Standard, and it’s not an optional upgrade. The employee is announced to you by name and photo before the visit. The work is warrantied in writing. The company is bonded and carries the coverage to stand behind what we promise. That’s the actual difference between a real guarantee and a nice paragraph on a website.
See the difference
Before
After
Before
After
Before
AfterWhat the Guarantee Does Not Cover
We’ll be direct about this, because vague promises are part of what’s wrong with this trade. The written guarantee covers our workmanship and the parts we install. It does not cover pre-existing conditions we documented before the job started, damage caused by events outside the repair (a chimney fire, an earthquake, an unauthorized modification), or normal wear and tear on components we never touched. If you’re not sure whether something falls inside or outside the guarantee, call us and ask. We’d rather explain it up front than have you wonder.
The 365-Day Done Right Promise in Practice
Here’s how it actually plays out in San Francisco homes. Say we repair a damper assembly in March, and by October it’s sticking again. You call. We send a technician back with the original work order and the written guarantee attached. If the failure is on us, the second visit costs you nothing: labor, parts, and trip fee included. If we determine the problem is unrelated to our repair, we’ll show you photos and explain exactly why, and you’ll get a written quote before any further work. Either way, you’ll know you dealt with a company that doesn’t leave homeowners hanging when a repair doesn’t hold up.
Why the Upfront Price Is Part of the Guarantee
A written guarantee is worthless if the first bill comes in higher than the estimate. That’s why the written price before work begins isn’t a feature of this San Francisco chimney company; it’s the condition that makes every other promise credible. You’ll know the cost of a standard chimney sweep before we start. You’ll know what a gas fireplace repair will cost before we order parts. You’ll never be surprised at the end of a job by a number you didn’t authorize. Ruben Castellano has built Alcott on the idea that homeowners should have the same information we do before deciding what work to approve.
Frequently Asked Questions
Our guarantee covers the workmanship on every repair we perform, backed by a written document stating exactly what’s covered and for how long. If a repair fails during the coverage period, the second visit is free.
The 365-Day Done Right Promise gives you a full year of accountability on every completed job. The specific coverage period for each repair is stated in the written guarantee you receive before we leave.
No. The written guarantee on every repair is included at no extra charge. It’s not an upsell, it’s not a separate line item, and it’s not optional.
Call the office. We’ll send a technician back to look at the issue. If the repair failed due to our work, the second visit is free. If something else is going on, we’ll show you exactly what we found and give you a written quote before any follow-up work.
Yes. Alcott Chimney San Francisco is licensed and insured in California, and every technician is background-checked and identity-verified as part of the Threshold Standard.
We install and service professional trade-grade materials including DuraFlex liner systems, HeatShield resurfacing, Gelco, Olympia Chimney, Famco, and Copperfield. These are the brands chimney professionals specify, not box-store substitutes.
Written by Ruben Castellano, Owner at Alcott Chimney San Francisco, serving San Francisco since 2002.