AC Not Turning On After Power Outage? Here’s How to Fix It
A sudden power outage can leave you sweating, especially during the summer months in Carrollton, Texas. But even when the electricity comes back on, you may notice problems with your air conditioning system. If your AC unit is blowing warm air, won’t turn on, or isn’t cooling as it should, you may need to reset the AC.
The power surge that comes with electricity being restored can interfere with your air conditioning system, and failing to properly reset it could cause further issues. By following a few simple steps, you can get your cooling system running again and restore cold air to your home.
If you need help getting your air conditioner back up and running after a power outage, call Lex Air Conditioning & Heating at (972) 217-8955 or contact us online for professional AC repair services in Carrollton, TX.
What Does AC Power Loss Mean?
AC power loss happens when your air conditioning system stops working due to a power outage, a tripped breaker, or a sudden power surge.
When the electricity in your home goes out, the AC unit shuts off along with your other appliances. Sometimes, when the power returns, your air conditioning unit may not start up properly. This can happen if the breaker panel is overloaded, fuses are blown, or the internal circuitry of the HVAC system is affected.
Does AC Work When Power is Out?
No, unless you have a backup generator installed in your home or business, your air conditioning system will not work during a power outage because it relies on electricity to run. When the power line supplying your home goes down due to severe weather or other electrical issues, your AC unit shuts off like other appliances. Severe storms and lightning strikes can also cause sudden power surges that trip the breaker and shut off power to your AC unit.
Even after the power returns, a tripped breaker or blown fuse may prevent your HVAC system from starting properly. If you have issues with the air conditioner after a power outage, you may need to check your circuit breaker box and ensure your AC system is not permanently damaged.
Why Does an AC Need to Be Reset After a Power Outage?
A power outage can unexpectedly turn your air conditioner off. But when electricity is finally restored, the sudden power surge could trip the circuit breaker and keep your system from turning back on. Most AC units also have built-in safety features that shut off the compressor to prevent it from overheating in a power surge.
If your HVAC system doesn’t begin cooling after the power returns, it may need a manual reset to restore its normal function. Resetting your air conditioner helps restart the compressor and get the cooling system running properly again.
If your AC system still won’t turn on, you may need a Carrollton electrician from Lex to inspect the breaker box, check for electrical damage, and get your home comfortable again.
Steps to Reset Air Conditioner After Power Outage
When you are experiencing issues with the AC after a power outage, a simple reset may help restore cool air to your home. Here’s how to properly reset the AC unit:
Step 1: Turn Off Thermostat
The first step in resetting your air conditioning system after a power outage is to turn off the thermostat. This is as simple as switching it to the “off” position to stop it from sending signals to your AC unit while you go through the reset process.
Turning off the thermostat prevents the air conditioner from trying to begin cooling before the system is ready.
Step 2: Cut Power to Air Conditioner
The next step is to turn off the power directly at the circuit breaker. During severe storms, power surges can “trip” the circuit breaker, meaning some switches are moved to a neutral position.
To safely reset the system, locate the circuit breaker box in your house—often found in the garage, laundry room, or a storage area. Look for the switch labeled for your air conditioning unit and flip it to the “off” position.
Cutting power at the source helps prepare the system for a safe restart.
Step 3: Locate AC Unit’s Reset Button
After cutting the power, check your outdoor unit for a reset button. Not all air conditioning units have one, but if yours does, it will usually be a small red button on the control panel.
Press and hold the button for about 3–5 seconds, or follow the instructions in your manufacturer’s manual. This step can help restart the system and get your AC back to functioning properly.
If your unit does not have a reset button, you can move on to the next step in the restart process.
Step 4: Restart Circuit Breaker
After a few minutes, it’s time to restore power to your air conditioning system by flipping the circuit breaker switch back to the “on” position.
Think of this step as restarting a computer after it crashes—turning the breaker off and then back on helps reset all the systems of your AC unit.
Step 5: Wait It Out
Once the circuit breaker is turned back on, you’ll need to give the system time to properly reset.
This process isn’t instant—your AC system may take about 30 minutes to reset fully. It’s important to be patient and avoid adjusting the thermostat or flipping the breaker again.
After about 30 minutes, your system should be ready to begin cooling again.
Step 6: Turn Thermostat Back On
After waiting for the air conditioning system to restart, it’s time to turn on the thermostat.
Reset it by switching to the “on” position and adjusting the temperature lower than the current room temperature. This should trigger the AC unit to start running and blowing cool air throughout your home.
If your air conditioning system still doesn’t turn on, there may be electrical damage from the storm and repairs may be needed. In that case, it’s best to call a trusted HVAC company like Lex for a thorough Carrollton, TX electrical inspection and repair.
How Long Does it Take for AC to Reset?
The time it takes to reset your AC after a power outage depends on the system, but most air conditioning units need about 30 minutes to fully restart.
This waiting period allows the system to stabilize, reset the internal circuitry, and prepare to begin cooling again. If you turn the thermostat back on too soon, the system may not work correctly, so it’s important to give the system time to properly reset.
How To Prevent AC Power Loss During Power Outage
With our backup generator installation services in Carrollton, TX, Lex ensures that your air conditioning system continues running during a power outage, helping your home stay cool and comfortable. Whether it’s a heatwave or a sudden storm, a reliable backup generator guarantees that your cooling system remains operational, preventing discomfort and potential damage to your home.
We also recommend installing a whole-home surge protector to keep your AC unit and other appliances safe from power surges caused by severe storms or sudden voltage spikes. A whole-home surge protector detects excess voltage and redirects it away from your home’s wiring, protecting your HVAC system and reducing the risk of costly repairs.
AC Unit Not Functioning Properly After Power Outage? Call Lex Air ASAP!
If your air conditioner isn’t working after a power outage, don’t worry—the Carrollton heating and air specialists at Lex Air are here to help. If it turns out that it’s an electrical issue and not an HVAC issue, we also have a team of fully certified electricians available to diagnose and repair the problem ASAP.
Whether you need assistance resetting your AC unit, installing a whole-home surge protector, or scheduling regular maintenance to keep your system running smoothly, our team is ready to provide expert service.
For fast and reliable HVAC help, call (972) 217-8955 or contact us online to schedule an appointment!
