It is 94 degrees in Pleasanton, the AC quit at 2pm, and the house is heading toward 80. You do not need a sales pitch, you need a tech and a fix today. Onzone runs same-day AC repair across the Bay Area for any make.
Flat diagnostic fee. Upfront repair pricing before any work starts. The parts that fail most often live on our trucks, so most repairs finish on the first visit.
If your central AC or mini-split stays off, we check power, controls, safeties, capacitors, and thermostat signals.
Weak cooling can come from low refrigerant, dirty coils, airflow restrictions, failed valves, or compressor problems.
Frequent starts, stops, or trips can point to clogged filters, frozen coils, bad sensors, or oversized equipment.
Water near the furnace, air handler, or wall cassette often means a plugged drain, cracked pan, or icing coil.
Call by noon and we usually have a tech on-site that afternoon. No-cool calls during heat events jump to the front of the queue.
Diagnostic fee is fixed. Any repair quote is written down before we open a wrench, so there are no surprises on the invoice.
Capacitors, contactors, common refrigerants, motors, fan blades, control boards for major brands. Most fixes finish on the first visit.
Same-day for most calls during cooling season. No-cool calls during a heat event take priority. Call (650) 698-7979 and we will give you a real ETA before you commit, not a vague window.
The diagnostic fee is flat. Most common repairs (capacitor, contactor, refrigerant top-up) land in the $200–$600 range. Larger jobs (compressor, evaporator coil) are quoted in writing before any work starts. See our maintenance plan for repair discounts.
Yes. Carrier, Lennox, Trane, Mitsubishi, Daikin, Goodman, Rheem, plus most mini-split brands and older systems most shops avoid. We do not turn down work because a system is older or unusual.
Rule of thumb: if the unit is 12+ years old and the repair quote exceeds half the cost of a new installation, replacement usually wins on efficiency and reliability. We will lay out both numbers honestly and you choose. Installation pricing here.
Yes. Refrigerant leaks waste energy, ice up the coil, and can damage the compressor (the most expensive part of the system). They are also illegal to top off without finding and fixing the leak under EPA rules. We do leak detection, repair, and EPA-certified recharge in one visit.
