When your AC stops cooling on the hottest week of the year, or the furnace clicks but won’t fire on a cold morning, every hour matters. Onzone runs same-day service across the Bay Area for any make, any age, residential or commercial.
Our techs arrive with the parts to actually fix it, not just write a diagnosis and leave. Flat diagnostic fee. Upfront repair pricing. The fix happens on the first visit on most calls.
If your outdoor unit stays silent or the blower never starts, we trace power, thermostat, capacitor, and control issues.
Hot and cold rooms often point to airflow restrictions, failed dampers, refrigerant problems, or a misreading thermostat sensor.
When heat cycles fail, we test ignition, flame sensing, gas valve operation, limits, pressure switches, and board signals.
Frequent starts and stops can be caused by dirty coils, weak capacitors, safety trips, refrigerant charge, or control faults.
Call by noon and we’ll usually have a tech on-site that afternoon. 24/7 emergency line for no-heat / no-cool emergencies.
Carrier, Lennox, Trane, Mitsubishi, Daikin, Goodman, Rheem, plus mini-split brands. We don’t turn down work because the make is unusual.
You see the repair price before any wrench turns. No drip pricing, no surprise bench fees at the end.
Standard service calls go out the same business day if you call by noon. For 24/7 no-heat / no-cool emergencies, a senior tech is typically on-site within a few hours.
There’s a flat diagnostic fee that covers the trip and the time to find the problem. If you approve the repair, the diagnostic fee is rolled into the repair cost — you don’t pay twice.
Almost certainly. We service every major North American HVAC brand plus all common mini-split manufacturers. If for some reason we can’t handle it, we tell you upfront and won’t charge the trip.
