01
Call and Triage
You reach a live dispatcher, day or night, who takes your address, furnace brand, and symptoms. We ask whether you smell gas or hear the blower running, because those answers change what we load on the truck. You get a technician name and an arrival window before you hang up.
02
On-Site Diagnosis
The tech arrives, pulls the fault codes, and runs the ignition sequence with a multimeter, manometer, and combustion analyzer. Expect 20 to 30 minutes of testing before you hear a diagnosis. We show you the failed part and explain what it does.
03
Upfront Quote
You get one number covering parts and labor, with the repair options laid out plainly. If a control board costs more than a sensor swap, we say so and let you choose. Nothing gets replaced without your go-ahead.
04
Repair and Test
Most repairs take 45 to 90 minutes. We swap the failed component, then cycle the furnace three times to confirm ignition, flame rectification, and steady airflow. Temperature rise gets measured at the return and supply to confirm the unit is running inside its rated range.
05
Safety Sign-Off
Before we leave, we run a carbon monoxide test, check the heat exchanger, and set your thermostat. You get a written summary of what failed, what we replaced, and the warranty on the part. If we spot a second weak component, you hear about it now, not mid-January.