Furnace & Heating Repair services in San Francisco
Our crew runs about half of its weekly volume on furnace & heating repair calls in and around San Francisco. The other half is everything else local-service. So yes, we know your area. Plain-spoken estimates, written quotes, no surprise add-ons mid-job. That's the whole pitch.
Talk to a tech: (800) 555-3072
Furnace & Heating Repair in San Francisco — what's typical here
Climate and housing age in San Francisco tend to drive specific failure patterns. We see the same handful of issues every season.
On bigger jobs we'll bring two techs. On simpler ones, just one — fewer hands, faster billing.
One we ran last year
A San Francisco customer in their 12-year-old home had been chasing furnace clicking but not igniting for weeks before calling. Failed hot surface ignitor was the actual cause. We replaced ignitor, system back online in 30 minutes; everything stable since. About $856 all in.
What we cover
Heating-side repairs run different than AC. Most furnace calls come down to ignitor failure, flame sensor, control board, or pressure switch. Heat pumps add reversing valve and defrost board.
Gas furnace ignitor failures are the most common winter call — about 40% of no-heat calls. The ignitor is a $35 part and a 20-minute job; total flat-rate runs $185-$340.
Heat pump no-heat in cold weather usually means failed reversing valve solenoid (system stuck in cool mode) or failed defrost board (outdoor coil iced up). Both diagnoseable in under an hour.
Older furnaces (15+ years) develop heat exchanger cracks. We check for them every diagnostic visit because a cracked heat exchanger leaks carbon monoxide and is a replacement-not-repair issue.
Fair pricing for this work
Diagnostic visit runs $110 – $160. Hot surface ignitor replacement runs $230 – $425. Flame sensor replacement runs $205 – $370. Pressure switch replacement runs $275 – $525. Control board replacement runs $525 – $1,060. Heat exchanger replacement runs $2,250 – $4,250.