What counts as an AC emergency?

No cooling during a heat event, a system that trips the breaker every time it starts, ice on the refrigerant lines with warm air inside, or water pouring from the indoor unit. If someone in the house handles heat poorly, treat any no-cool day as urgent and call.

How fast can you actually get here at night or on a weekend?

Call and you get a live answer and a real ETA for your address, not a promise made by a form. During heat waves the no-cool queue moves by triage, and we say plainly where you sit in it.

Does emergency AC repair cost more after hours?

The service call is a flat $49, day or night, credited toward your repair, and you hear it on the phone before a tech rolls. Any repair is priced in writing before work starts, so there are no surprise line items because it was late. Every repair is backed by a one-year labor warranty.

Should I keep running the AC while I wait?

Shut it off if you see ice on the lines, hear grinding, or smell anything burning. Running a failing system can turn a small repair into a compressor replacement. Fans on, blinds closed, and it holds until we arrive.

Is this the same team as your regular AC repair?

Same techs, same trucks, same standards. If your situation can safely wait for a standard slot, same-day AC repair is usually the better booking, and we will tell you that on the phone.

Emergency AC Repair in the Bay Area

Emergency AC Repair.

The AC quit on the hottest day of the year and the house is climbing past 85. That is what emergency AC repair is for: a live person on the phone, a real ETA, and a tech with the common failure parts already on the truck.

We prioritize no-cool homes during heat events, and the price is agreed before any work starts, day or night. For heating, gas smell, or refrigeration emergencies, see 24/7 emergency HVAC.

Problems we fix every day.

No cooling in a heat wave

The system stopped on the worst possible day and indoor temperatures are climbing past safe comfort.

AC trips the breaker

The condenser knocks out power every time it tries to start, often a seized compressor, shorted motor, or failed capacitor.

Iced lines, warm air

Frost or solid ice on the refrigerant lines while the vents blow warm points to airflow or charge problems that get worse by the hour.

Water pouring inside

An overflowing drain pan or blocked condensate line can soak ceilings and floors fast if the system keeps running.

Cathy Nelson June 2026

OMG they were a lifesaver! After a power outage my old A/C would not come on in the middle of this heat wave we're having. I went through thumbtack and received several notifications back of companies that wanted to help. Ozone was the first one. I was thrilled that they could fit me in at a 2 PM to 4 PM timeslot as I was having people over for dinner tonight and expected 92° weather. He got here he was very quick clean explained everything and reasonable. I was a little hesitant because I didn't see many reviews but it's because they're a newer company and they just haven't got them yet and I figured I'd take a chance. Boy am I glad I did. They're coming tomorrow to give me an estimate on two new heaters and two new air conditioners.. I was very happy with their service and you will be too if you find yourself in need you can't go wrong with these guys! 5 star for sure!!

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Brandon Wang July 2026

I had an excellent experience with ONzone Heating & Cooling. Oleg was professional, friendly, and very knowledgeable from the moment he arrived. He carefully inspected my air conditioning system, explained exactly what the problem was in a way I could understand, and completed the repair quickly and efficiently. I really appreciated that he took the time to answer all of my questions and never tried to sell me services I didn't need. After the repair, he made sure everything was working perfectly before leaving. My AC is now cooling better than it has in a long time. It's not easy to find a company that is honest, reliable, and truly cares about customer satisfaction, but ONzone Heating & Cooling exceeded my expectations. I will definitely call Oleg again for any future HVAC needs and will gladly recommend ONzone Heating & Cooling to my family, friends, and neighbors. Thank you for the outstanding service!

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Oksana Sytnyk June 2026

I called ONzone Heating & Cooling because my AC was not cooling properly. They responded very quickly and scheduled a same-day service appointment. Teymur arrived on time and was very professional, friendly, and easy to talk to. He carefully inspected the system, explained what was causing the issue, and walked me through the repair process step by step. I really appreciated that he took the time to answer all my questions and made sure I understood what was being done. It's not often that you meet a technician who is both highly knowledgeable and genuinely cares about the customer. The problem was fixed quickly, and my AC has been working perfectly since. Teymur is someone you can trust, and I would definitely recommend ONzone Heating & Cooling to anyone looking for honest and reliable HVAC service.

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Emergency AC Repair.