How do you reset AC?

If your air conditioner (AC) is not functioning properly, resetting it may help resolve the issue. Resetting the AC can clear any temporary glitches or errors that may have occurred, allowing the system to restart and potentially fix the problem. Here's a step-by-step guide on how to reset your AC unit.

Steps to Reset Your Air Conditioner

1. Locate the circuit breaker for your AC unit. This is typically located in your home's electrical panel or breaker box.


2. Turn the circuit breaker to the "off" position. Wait for at least 30 seconds to a minute before turning it back to the "on" position.


3. Once the circuit breaker is back on, wait for the AC unit to restart. This may take a few minutes, as the system needs to go through its startup sequence.


4. If the AC unit does not start or the issue persists, you may need to reset the thermostat. Locate the thermostat and turn it off, then turn it back on after a few seconds.


5. If the AC unit still does not start or the problem continues, you may need to perform a more thorough reset by disconnecting the power supply to the unit.

Disconnecting the power supply involves turning off the circuit breaker and then unplugging the AC unit from the power source. Wait for at least 30 minutes before reconnecting the power and turning the unit back on. This allows the system to fully reset and clear any lingering issues.

Reasons to Reset Your Air Conditioner

There are several reasons why you may need to reset your AC unit:

• Temporary Glitches: Minor software or electrical issues can sometimes cause the AC unit to malfunction. Resetting the system can help clear these temporary glitches and allow the unit to function properly again.


• Thermostat Issues: If the thermostat is not communicating correctly with the AC unit, resetting the thermostat may help resolve the problem.


• Power Outages or Surges: Power interruptions or voltage spikes can sometimes cause the AC unit to malfunction. Resetting the system can help it recover from these events.


• Firmware Updates: If you have recently updated the firmware on your AC unit, resetting the system may be necessary to ensure the new firmware is properly installed and functioning.

It's important to note that while resetting your AC unit can often resolve minor issues, it may not fix more complex problems. If the issue persists after resetting the system, it's best to contact a professional HVAC technician for further diagnosis and repair.

How long to leave the breaker off to reset AC?

Wait at least 30 minutes to reset an AC after turning off the breaker. This allows the system's internal components, like the compressor, to fully power down and equalize pressure before restarting. 
This video demonstrates how to reset your AC's breaker: 56sAustinAirCoYouTube · Jun 29, 2013
Step-by-step guide to resetting your AC

1. Turn off the thermostat: Set your thermostat to the "off" position to stop the cooling cycle. 
2. Turn off the breaker: Locate the correct circuit breaker in your electrical panel and switch it completely to the "off" position. 
3. Wait 30 minutes: Wait for at least 30 minutes for the system to fully reset. 
4. Turn the breaker back on: Flip the circuit breaker back to the "on" position. 
5. Turn the thermostat back on: Go back to the thermostat and set it to "cool" and your desired temperature. 

This video shows how to reset your air conditioner: 57sHVAC BeeYouTube · Feb 13, 2025
If the problem continues

• If the breaker trips again, do not keep resetting it, as this can be a fire hazard. 
• If the AC still does not work after the reset, there may be a more serious issue and you should call a professional. 

You can watch this video to learn about other ways to reset your air conditioner: 59sHome CapriceYouTube · Apr 7, 2023

Does my AC need to be reset?

If your AC won't turn on, is blowing warm air, or shuts off too quickly, it might just need a quick reset due to a temporary electrical glitch. However, sometimes these signals point to more serious issues that require expert attention.

How do I reset my air conditioner?

Turn off the circuit breaker that powers your HVAC. Click and hold the reset button for three to five seconds. Restore power to your AC by flicking the circuit breaker back on. Finally, set the thermostat to “cool” and set it to a temperature slightly colder than the current indoor temperature.

Why is my AC blowing but not cold?

If your AC is blowing but not cold, common causes include a clogged air filter, dirty condenser coils, or low refrigerant. Other issues could be a faulty thermostat, a frozen evaporator coil, or a problem with the compressor or fan motor. You can start by checking and replacing the air filter and cleaning the outdoor condenser coils.
 
Simple fixes you can do

• Check the thermostat: Ensure it's set to "cool" and on an appropriate temperature. Sometimes, a malfunctioning thermostat needs repair or replacement. 
• Replace the air filter: A dirty filter restricts airflow and can cause the AC to malfunction. It's recommended to replace it every 1-3 months. 
• Clean the condenser unit: The outdoor unit's coils can get clogged with dirt and debris. Gently rinse them with a hose to improve heat transfer. 
• Clear vents and registers: Make sure all the vents and registers in your home are open and not blocked by furniture or other objects. 

Potential issues that require a professional

• Low refrigerant: A hissing sound or ice on the evaporator line could indicate a refrigerant leak. This requires a technician to find and fix the leak before recharging the system. 
• Frozen evaporator coil: This is often caused by restricted airflow from a dirty filter. If you find ice on the indoor coil, turn the system off at the breaker and let it thaw completely before trying to restart. 
• Faulty compressor or capacitor: If the fan motor runs but you don't hear the compressor humming, or if you hear strange noises, a component like the compressor or a bad capacitor could be the issue. 
• Ductwork leaks: Leaky ducts can lose a significant amount of cool air before it reaches your home. 

When to call a professional
If simple fixes don't work, it's best to call a qualified HVAC technician to diagnose and repair the problem, especially for issues like refrigerant leaks or a bad compressor. 
49sAC runs but doesn't blow cold. #diyhvacYouTubeLex Vance · 5mo 1:07Why is my A/C running, but not cooling?YouTubeGenz-Ryan · 1y 1:23AC Blowing But Not Cold? Watch This Before You Call! ❄️YouTubeNY Boiler & Air Conditioning Repair · 5mo 0:58Air Conditioner Not Cooling Enough? Here's what YOU can doYouTubeThe Air Of Authority · 2y 0:12AC outside is running but the house isn't cooling : r/hvacadviceRedditWubbyThePancake · 2mo 0:43THE AIR CONDITIONING NOT WORKING WELL, WHY?YouTubeNY Boiler & Air Conditioning Repair · 3y (function(){
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