AC Repair · Santa Rosa, CA
AC Repair in Santa Rosa, CA
Santa Rosa's hot afternoons arrive quickly once the fog burns off, and an AC that quits in a heat spell makes the house uncomfortable fast. These checks can rule out simple causes while you wait for help.
Request an HVAC technicianThermostat first
Make sure the thermostat is set to cool, the setting is below the room temperature and the fan is on auto. Replace the batteries if the display is faint, and give the system several minutes after any change before deciding it isn't working.
Power to the unit
Check the breaker panel for a tripped air conditioner or furnace breaker, and look at the disconnect box on the wall beside the outdoor unit. If a breaker trips again right away, leave it off and book a repair rather than resetting it repeatedly.
A dirty filter
Dust from dry summers and smoke events clogs filters faster than many people expect. A clogged filter cuts airflow, freezes the indoor coil and leaves you with weak, warm air. Change it before anything else.
Ice on the lines
Frost on the copper lines or indoor coil means poor airflow or low refrigerant. Switch the cooling off, run the fan alone to thaw the coil, replace the filter and try again. If it freezes again, the system needs a technician.
Outdoor unit problems
A unit that hums but won't start, or a fan that doesn't turn, often has a failed capacitor or contactor. Dry grass, leaves and dust packed into the coil also make it overheat and shut down on hot afternoons.
Water leaks
Air conditioners remove moisture, which drains away through a small pipe. A blocked drain can overflow into a closet, attic or ceiling, and a float switch may shut the system off on purpose.
Refrigerant
Refrigerant shouldn't need topping up. A system that's low has a leak, and a licensed technician should find and fix it rather than just adding more each summer.
Get it fixed
Tell the technician what the AC is doing, its age and what you've checked. Send a request and an HVAC technician will get in touch.
Frequently asked questions
- Why does my AC cool fine in the morning but struggle in the afternoon?
- Afternoon heat pushes the system hardest. A dirty outdoor coil, low refrigerant, leaky attic ducts or a system that's simply too small for the house show up most then.
- Is it safe to run the AC during wildfire smoke?
- Usually yes, with a clean, good-quality filter and the system set to recirculate rather than bring in outside air. Check any fresh-air damper on your system.
Other heating and cooling services
Request an HVAC technician
Repairs, renovations and new projects. Tell us what you need and we'll pass it straight to an HVAC technician, who will call you to go over the job and give you a quote.
- Heating and cooling repairs, renovations and new projects
- Santa Rosa and towns across Sonoma County
- Get a quote before any work starts
Need ac repair in Santa Rosa?
Send a request and an HVAC technician will get in touch. Requests answered 7 days a week.
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