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.
Trusted Gas Fireplace Repair for San Francisco Homeowners
A gas fireplace that won’t light, won’t stay lit, or produces a weak, flickering flame usually points to one of a handful of fixable problems: a dirty thermopile, a worn-out thermocouple, a faulty gas valve, or clogged burner ports. In most San Francisco homes, we diagnose and repair these issues the same visit, often within an hour of arriving.
Alcott Chimney San Francisco has served homeowners here since 2002. Ruben Castellano leads a team of technicians who are background-checked, identity-verified, and sent to your door with a name and photo shared before we arrive. We give you a written price before any work starts, and every repair carries our 365-Day Done Right Promise. Call (831) 534-3789 for a free estimate.
Key Takeaways:
- Most gas fireplace repairs in San Francisco cost between $180 and $450, depending on the part and the unit.
- We arrive with a written price before any work begins. No surprise charges, ever.
- Every repair is covered by a written guarantee. If it fails, the second visit is free.
- Your technician’s name and photo are sent to you before the visit. They show a photo ID at the door.
What Our Gas Fireplace Repair Service Includes
Pilot Light and Ignition Repair
A pilot light that won’t stay lit is the most common gas fireplace complaint we hear from homeowners in the Richmond and Sunset districts. It often comes down to a thermocouple that has stopped generating enough millivolts to hold the gas valve open, or a pilot assembly clogged with dust and spider webs. We test the thermocouple output with a multimeter, clean or replace the pilot assembly, and confirm the flame holds before we leave. If your fireplace has an electronic ignition instead, we check the igniter, control module, and wiring connections for voltage and continuity.
Thermopile and Thermocouple Replacement
Gas fireplaces that use a standing pilot rely on a thermocouple or thermopile to signal that the flame is present. When that component drifts out of spec, the fireplace shuts itself off, which is actually a safety response doing its job. We replace these parts with OEM or professional-grade equivalents, not generic box-store substitutes that may not match the millivolt output your valve expects. After installation, we run the unit through multiple on/off cycles and measure the output under load to confirm the repair will hold.
Gas Valve and Control Repair
If the burner won’t light at all and the pilot never begins, sometimes the gas valve itself is no longer opening properly. We verify gas pressure at the inlet and outlet with a manometer, then test the valve’s solenoid and wiring before recommending replacement. This is one repair where guessing is expensive, so we show you the readings and explain exactly why the valve needs to be replaced, using the same process on gas logs and gas inserts across San Francisco.
Burner and Log Cleaning and Repair
Yellow, weak, or uneven flames often come from burner ports clogged with dust, pet hair, or corrosion, and the fix sometimes requires nothing more than proper cleaning and tune-up. In damp neighborhoods like the Outer Sunset and parkside areas of San Francisco, burner rust is a regular issue we see because of the marine air. We remove the logs, clean the burner and ports, inspect the log set for cracks or degradation, and reseat everything according to the manufacturer’s pattern for a proper flame picture.
Safety System Inspection and Repair
A gas fireplace is a gas appliance, and the carbon monoxide and gas leak risk is real, not theoretical. Every repair visit includes a check of the venting, the glass seal, the gaskets, and the gas connections using a combustible gas sniffer and a CO detector. We will not declare a unit working properly just because the flames come on; if there is a venting problem, we tell you plainly, show you what we found, and recommend only what the evidence supports.
If the problem turns out to be something our gas fireplace repair service doesn’t cover, we refer you to the right person, and if a chimney sweep or chimney inspection is part of what the unit needs, we handle that too.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Styles & brands we work with
Brands We Service for Gas Fireplace Repair
We work on gas fireplaces from the major brands, and we use professional trade materials: Gelco and Olympia Chimney for gas logs and burner systems, Famco for venting components, and Copperfield for gas fireplace parts and accessories. These are the brands that chimney and hearth professionals specify, not the substitutions you find on a hardware store shelf.
With Gelco gas log sets, we regularly see burner tubes that need to be repositioned after years of heat cycling, and we stock common replacement parts so we don’t need to order and return for a second visit. With Olympia Chimney gas units, we check the log placement against the manufacturer’s diagram because a mispositioned log causes soot and poor combustion. Whether you have a Gelco, an Olympia, or another make entirely, we can diagnose it, repair it, and back the work in writing.
See also: Gas Fireplace Repair in Oakland and Gas Fireplace Repair in San Mateo.
Signs You Need Gas Fireplace Repair Right Now
- The burner shuts off after a few minutes. This is your unit’s safety system doing exactly what it was designed to do, but it is also a signal that a component is failing. A weak thermopile or a dirty pilot assembly is usually the cause, and left unchecked, the unit will soon stop working at all.
- You smell gas when the fireplace is off. A faint odor right after the unit shuts down is not unusual, but a persistent gas smell that appears when everything is off needs attention the same day. Call us at (831) 534-3789 and we will tell you what to do while someone is on the way.
- The flames are yellow, lazy, or have black soot on the glass. Gas fireplaces should burn with a mostly blue, steady flame. Heavy yellow flames and soot buildup mean incomplete combustion, which raises carbon monoxide production and should be corrected before you run the unit again.
- The glass is cracked or the seal is failing. A cracked ceramic glass panel is not just a cosmetic problem. The glass keeps combustion gases out of your living space, and a failed gasket or crack can allow carbon monoxide to leak into the room. We replace the glass and reseal the unit, then test for CO before we leave.
- The remote or wall switch no longer works reliably. If your gas fireplace only sometimes responds to the switch or remote, the receiver, wiring, or control board could be failing. We test the components in the control chain and replace only what has actually failed, rather than replacing the whole system.
Our Gas Fireplace Repair Process – Step by Step
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You call, you get a person. A live person answers our phones around the clock, including at 11 p.m. when something smells like smoke. We listen, ask a few diagnostic questions, and schedule a time that works for you. You will have the technician’s name and photo before we arrive.
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We show up and verify, then diagnose. At the door, the technician shows a photo ID badge, same as the photo you were sent. Then we inspect the unit, using a manometer for gas pressure checks, a multimeter for millivolt readings, and a combustible gas sniffer for leak detection. We check venting, glass seals, burner condition, and control components.
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You get a written price before work starts. After diagnosis, we write down exactly what we found, what we recommend, and what it will cost. You decide what gets done. No work happens without your approval, and the price on paper is the price you pay.
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We repair, test, and show you the outcome. We replace only what has failed, using professional-grade parts. After the repair, we run the fireplace through multiple cycles, check combustion and safety systems again, and show you what we changed and why.
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You get a written guarantee. Every repair includes the 365-Day Done Right Promise. If the repair fails within the coverage period, the second visit is free. We do not leave until the unit is operating safely and correctly.
See the difference
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After
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After
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AfterHow Much Does Gas Fireplace Repair Cost in San Francisco?
A typical gas fireplace repair in San Francisco runs between $180 and $450, depending on what has failed. A thermocouple or thermopile replacement usually falls in the $180 to $300 range. A gas valve replacement often lands between $350 and $600 with labor. Cleaning a sooted-up burner and adjusting the log set typically costs $150 to $250.
What affects the price: the part itself, how long it takes to access the component, and whether the unit needs additional safety corrections like a new glass seal or vent adjustments. You avoid overpaying by working with a company that gives a written price before any work begins and that never charges a diagnostic fee for a repair we can see through to completion. Every Alcott Chimney San Francisco estimate includes the full picture: what is broken, what it costs, and what can wait. Call (831) 534-3789 for an exact quote. Estimates are free.
Gas Fireplace Repair Near San Francisco – Our Service Area
We repair gas fireplaces across San Francisco, from the Outer Sunset to Potrero Hill, and in the surrounding communities. We also serve Oakland, San Mateo, Berkeley, Vallejo, Richmond, San Rafael, Hayward, Albany, Fairfax, Walnut Creek, and Novato. In most parts of San Francisco proper, we can schedule a repair visit within 48 hours. Emergency calls for gas odor or flame rollout are treated as priorities, day or night. If you are not sure whether you are in our service area, just call. If we cannot get to you, we will say so plainly and point you in the right direction.
Related services: home | Gas Fireplace Repair in Oakland | Gas Fireplace Repair in San Mateo
Serving San Francisco, CA - Our Local Coverage Area
We’re based in the San Francisco area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
Frequently Asked Questions – Gas Fireplace Repair in San Francisco
Gas fireplace repair means diagnosing and fixing the components that let a gas fireplace light, stay lit, and burn safely. That includes the pilot assembly, thermocouple, thermopile, gas valve, burner, controls, and glass seals. We repair rather than replace whenever the unit can be made safe and reliable, and we tell you plainly when replacement makes more sense.
Most repairs we complete in San Francisco take between 45 minutes and two hours on site. A thermocouple replacement or burner cleaning is usually done within an hour. Even a gas valve replacement, including testing, rarely takes more than two hours. We carry common parts on the truck, which means many repairs are finished the first visit.
Expect to pay between $180 and $450 for most repairs, with gas valve replacements reaching $600 in some models. You have the right to see a written price before we start, and we would never ask you to agree to a repair without one. Call (831) 534-3789 for a free estimate with real numbers based on your unit.
Yes. We service Gelco gas logs and burners regularly, and we stock common Gelco replacement parts. We also work on Olympia Chimney, Famco, Copperfield, and most other major gas fireplace brands. If you call with a brand we don’t recognize, we will tell you honestly what we can and cannot do.
If you smell gas or see flames behaving erratically, call us at (831) 534-3789 any time. A live person answers around the clock. We will walk you through what to do right away, including when to shut off the gas supply and ventilate the room, and we will prioritize getting a technician to your home.
Every repair carries a written guarantee under our 365-Day Done Right Promise. If the repair fails within the coverage period, we return and make it right, and the second visit is free. The guarantee is included on every job at no extra charge. It is never conditional on buying additional services.
Clear the area around the fireplace so we can access the unit and its controls. If you have small children or pets, keep them in another room while we work. Have your remote or wall switch nearby so we can test the full control chain. If you know the brand and model, that helps us bring the right parts, but it is not required.
Schedule Your Gas Fireplace Repair Service in San Francisco Today
Call (831) 534-3789 and tell us what your gas fireplace is doing, or not doing. You will get a straight answer, a scheduled time, and the name and photo of the technician who will arrive. Every repair begins with a written price before any work starts, and every repair ends with a written guarantee. Call now for a free, no-obligation estimate.
Written by Ruben Castellano, Owner at Alcott Chimney San Francisco, serving San Francisco since 2002.