When the heat quits on a 38°F night in Hesperia, Yucaipa, or San Bernardino, you don't have days to wait. Tech On Call runs same-day furnace repair across both Inland Empire counties with licensed, insured techs and stocked trucks. Ignitors, flame sensors, gas valves, pressure switches, blower motors, and capacitors are on the truck — most no-heat calls get fixed the same visit, not "we'll order the part and come back next week."
Our most common furnace repair calls follow a pattern. A failed hot-surface ignitor (the most frequent cause of "thermostat calls but burners won't light") is a $200–$400 same-visit fix. A dirty flame sensor causes the burners to light then shut off after 5 seconds — a 20-minute cleaning, not a parts call. A cracked heat exchanger is the big one — a CO safety hazard that means furnace replacement, not repair. Combustion testing is part of every diagnostic.
Every repair starts with a flat-rate diagnostic that credits toward the work. You see the price before we touch a wrench. If the furnace is 15+ years old or the repair exceeds 40% of replacement cost, we'll quote furnace replacement honestly alongside the repair. If you want all-electric heating, ask about heat pump installation — IRA tax credits and SCE rebates dropped the effective cost significantly.