How to Restart Your Air Conditioner After a Power Outage

Its getting into storm season in San Antonio, TX and we are here to help with restarting your AC system after a power outage.

What you need to know

June To November is Storm Season

During the warmer months of spring and summer, we occasionally face intense storms. Among the risks such as wind damage, one of the most significant threats to your home during these turbulent times is lightning. If lightning strikes a power line near your residence, it can trigger a power surge, potentially disabling your appliances and even causing a complete power loss. Considering that your air conditioner operates on electricity, it’s beneficial to understand how to reactivate it if a power outage occurs. Today, we’re going to shed light on this topic by discussing the procedure to restart your air conditioner after a power disruption.


  1. Turning off your air conditioner at the thermostat. Find the “system” switch on your thermostat and move it to the “off” position. This action, akin to shutting down a device for a fresh start, paves the way for the next steps in the air conditioner restart process.
  2. Switch off your air conditioner at the circuit breaker. Following the deactivation of your air conditioner at the thermostat, the next step is to do the same at the circuit breaker. Navigate to your circuit breaker and locate the switch designated for your air conditioner. Flip this switch to the “off” position.
  3. reactivate the system at the circuit breaker. This is done by simply flipping the switch back to the “on” position at the breaker panel.
  4. Let the system rest for 30 minutes. The internal circuitry of your air conditioner requires a certain amount of time to reset once you’ve switched it back on. This process typically takes around half an hour, so it’s advisable to patiently wait for about 30 minutes.
  5. Turn the Air Conditioner back on at the thermostat. Once a duration of 30 minutes has elapsed, you can proceed to switch your air conditioner back on at the thermostat. Assuming that no damage occurred during the power disruption, your system should successfully resume its operation.


Proactive Preventive measures!

While it’s not within your control to entirely prevent a power outage in your home, you can take steps to reduce the risk of a power surge impacting your air conditioner. This can be achieved by installing an A/C surge protector. At Stay Cool Heating & Air Conditioning, we specialize in installing surge protectors for your system, allowing you to use it worry-free, even during harsh weather conditions.

If you have any queries about the correct procedure to restart an air conditioner following a power outage, or if you’re considering having a cooling system serviced or installed in your home, don’t hesitate to reach out to Stay Cool Heating & Air Conditioning. As your trusted air conditioning contractor in San Antonio, Texas, we’re here to cater to all your cooling needs. Contact us today for comprehensive assistance.


Call Stay Cool Air Conditioning and Heating Today!


How to Restart Your Air Conditioner After a Power Outage


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