Furnace Repair in San Ramon
We serve San Ramon, and we confirm the arrival window when you book. The climate runs hotter than the coast, 95-plus in July and August, with mild winters in the 35 to 40 range overnight. Cooling is the bigger workload, which means furnaces here log fewer hours than they would in a colder town. But the bulk of San Ramon is 1980s and 90s tract housing across Windemere, Twin Creeks, and Dougherty Valley, and those original furnaces are now at the age where parts start failing in earnest.
On a furnace that's run light for thirty years, the failures we see often are ignitors, flame sensors, and draft inducer motors, plus the occasional control board on a unit that's been heat-cycled through a lot of summers sitting next to a hard-working condenser. Those are repairable. The harder conversation comes when an original 1980s or 90s furnace cracks a heat exchanger, because at that age and with the AC condenser usually aging in parallel, a full system replacement often beats piecemeal repair.
When replacement is on the table, we check current heat pump incentives against the proposed equipment, contractor and application requirements. We also flag that some older San Ramon homes need electrical sub-panel work before a heat pump fits, and we check the panel as part of the estimate so there are no surprises. None of that applies to a simple furnace repair, but we mention it so you know what's behind the numbers if the conversation turns to replacement.
What we run into in San Ramon
Ignitor, sensor, and inducer repair on tract-home furnaces. The standard 1980s-to-90s San Ramon furnace call. We test the ignition train, check the flame sensor and draft inducer, and replace the failed part.
Heat exchanger inspection on 25-plus-year units. On original tract-home furnaces we inspect the heat exchanger on camera and test CO. If we find a confirmed crack we shut the unit down for safety and write it up, and we show you the crack on the camera footage before we talk about anything else.
Control board diagnostics. Furnaces that share a cabinet with a hard-running San Ramon AC condenser sometimes throw board faults. We isolate the control board issue rather than assuming, so you're not paying for a board the unit didn't need.
Replacement and incentive costs checked locally. When an original furnace and an aging condenser are both at end of life, we price repair against a heat pump conversion, review available incentive requirements, and check the electrical panel so the cost is clear before you decide.
Furnace Repair in San Ramon: common questions
How fast can you actually get to a San Ramon furnace call?
Our summers are brutal but winters are mild. Why does the furnace still fail?
If the furnace needs replacing, how do you check rebate eligibility?
Nearby and related
Furnace Repair near San Ramon: Danville · Alamo · Dublin · Pleasanton .
Other HVAC services in San Ramon: AC Repair · Ductless Mini-Split · Heat Pump Installation & Service · HVAC Installation · Maintenance Plans .
Common furnace repair problems in San Ramon: Furnace Blowing Cold Air · Furnace Not Heating .
See the full furnace repair overview or our San Ramon service area.
Furnace Repair in San Ramon
Repairs start with a $99 diagnostic, credited toward the fix. Replacing a system? The on-site assessment visit is free. Same-day written findings either way.
Bay Area · 7am–7pm · 7 days · no overtime charges