925-550-0505Instant Quote

Same-Day & Emergency HVAC Repair

No heat on a cold night or no AC in a heat wave? Call 925-550-0505 or book online any time. We offer same-day repair options across Contra Costa and Alameda Counties, and members get guaranteed emergency appointments within 24 hours.

Online Estimate

The short answer: Call 925-550-0505 or book online with the Schedule Service button. Same-day repair options are available across Contra Costa and Alameda Counties, and members get guaranteed emergency appointments within 24 hours. If you smell gas or a carbon monoxide alarm sounds, leave the house and call 911 or PG&E first.

Before We Arrive: Quick Checks

No Heat

  • Make sure the thermostat is set to heat and set above room temperature, and that its batteries aren’t dead.
  • Check that the furnace breaker is on and the furnace switch (it looks like a light switch) is on.
  • Replace a clogged air filter. A dirty filter can make the furnace overheat and shut off.
  • If you smell gas, don’t touch anything. Leave and call PG&E or 911.

No Cooling

  • Make sure the thermostat is set to cool and below room temperature.
  • Check the breakers for both the indoor unit and the outdoor unit.
  • Replace a clogged air filter and make sure supply vents aren’t blocked.
  • If you see ice on the refrigerant lines or indoor coil, turn the system off so it can thaw, and call us.

What We Repair

Our technicians are Perfect Star employees, not subcontractors: background checked, randomly drug tested, licensed and insured.

Frequently Asked Questions

Do you offer same-day HVAC repair?

Yes. Same-day service options are available across Contra Costa and Alameda Counties, depending on the day's schedule. Call 925-550-0505 or book online, and we'll give you the earliest time available.

Can I book a repair online at night or on the weekend?

Yes. You can book online any time using the Schedule Service button, and we'll confirm your appointment.

Do members get faster service?

Yes. Members get guaranteed emergency appointments within 24 hours, or the diagnostic is free, plus $68 priority diagnostics and 20% off non-warranty repairs.

What counts as an HVAC emergency?

No heat in cold weather, no cooling in a heat wave (especially with young children, older family members or anyone with health conditions at home), a burning or electrical smell from the system, water leaking from equipment, or a breaker that keeps tripping. If you smell gas or a carbon monoxide alarm goes off, leave the house and call 911 or PG&E first.

Will the repair be done on the first visit?

Often, yes. Our trucks carry thousands of parts, so many repairs can be finished the same visit. If a part has to be ordered, your technician will tell you how long it will take and what your options are in the meantime.

How much does an emergency repair cost?

After the diagnostic, your technician gives you every option with a fixed price for each before any work starts. We charge by the job, not by the hour.

Last updated November 2026 by the Perfect Star team.

Repair Reviews

Ashwini Naidu★★★★★
Excellent service. I ordered a one time AC tune up service and Mauricio the technician did a great job. He did not rush it, he...
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Tasharie Ameral★★★★★
I have been a Perfect Star Member for a few years now for regular tuneup maintenance, but having Shane come out to give me an...
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Gordon Wells★★★★★
Excellent job all around! Jesus explained what was to be done then thoroughly checked all systems within heating and cooling. He then provided photos of...
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