We service both gas and electric furnace systems with manufacturer-trained technicians.
Flat-rate pricing quoted after diagnosis, no pressure toward a premature system replacement.
If you're dealing with a pilot light that won't stay lit, an ignitor that clicks but never catches, or a furnace that runs but blows cold air, you already know furnace failures carry a safety dimension — carbon monoxide and gas leaks — that most other HVAC repairs don't, so the diagnostic has to start there.

Waiting rarely saves money and often turns a same-day repair into a longer, more involved job.
AAA Pro HVAC built its furnace repair process around one idea: diagnose first, quote honestly, fix it right.
We're licensed, insured, and staffed with techs who've spent years specifically on furnace repair, not general handyman work with an HVAC certificate bolted on.

Cracked heat exchangers get flagged immediately as a safety issue, not just a repair line item.
Our crews are trained on standing pilot, hot surface ignition, and electric resistance furnace systems alike.
Diagnosis happens first, and the quoted flat rate reflects the actual confirmed fault.
No-heat calls during freeze warnings get moved to the front of the schedule.
From the first symptom to the final fix, these are the specific furnace repair services our San Geronimo-area crews are equipped for.
Hot surface ignitors crack over time and simply stop glowing — we test resistance rather than replacing on assumption. This is one of the most requested furnace repair calls we get across San Geronimo, CA.
A gas valve that won't open or won't seal is tested with proper manometer readings, not just listened to. Techs handling gas valve diagnostics carry the specific parts and tools this job calls for, not a generic kit.
A cracked heat exchanger is a carbon monoxide risk and gets flagged immediately with the furnace shut down if needed. This is one of the most requested furnace repair calls we get across San Geronimo, CA.
We test motor amp draw against rated spec before replacement. This is one of the most requested furnace repair calls we get across San Geronimo, CA.
We inspect the full flue run, not just the connection at the furnace. This is one of the most requested furnace repair calls we get across San Geronimo, CA.
We test low-voltage circuits before condemning the board. This is one of the most requested furnace repair calls we get across San Geronimo, CA.

Tell us the symptom — no ignition, cold air, gas smell, or error code — and we route accordingly.
We confirm your San Geronimo address and a realistic arrival window.
Flat-rate quote follows the confirmed fault, before repair begins.
Most ignition and control repairs finish same-visit.

Tech tested the ignitor's resistance right in front of me and swapped it in under thirty minutes.
Old furnace was blowing cold air even though the blower ran fine.
Shut the furnace down immediately for safety and walked me through the options.
Pilot light kept going out every few hours.

Usually a failing ignitor or a fouled flame sensor — both are testable with the right equipment rather than replaced blind.
Yes — it's a genuine carbon monoxide risk and we treat it as a safety issue, not a routine repair line.
Could be a delayed ignition fault, a failed gas valve, or a limit switch issue — a full diagnostic narrows it down.
Electric resistance furnaces fail differently than gas units, and we diagnose accordingly.
Gas odor calls receive top dispatch priority.
Call dispatch for a live arrival estimate based on current demand.

Whether you're in the heart of San Geronimo or one of the surrounding communities, dispatch routes the closest available technician.
☎ Call +1-866-805-8548 for San Geronimo Service