Your air conditioner works hard to keep your home comfortable. When it starts having issues, it can be inconvenient and disrupt your routine. Whether you have a brand-new system or one that's a few years old, there are a few things you can troubleshoot if your AC isn’t working properly.

While we always recommend calling our expert technicians to restore comfort for you and your family as quickly as possible, here are a few simple troubleshooting tips you can try first:

AC Won't Switch On

If your AC isn't turning on, it may help to check the mode, thermostat, or control panel. Try the following:

  • Check the settings: Test the air conditioner settings. Set the AC in “cool” mode, and ensure the temperature is cooler than the room. 
  • Change the thermostat batteries: You may be dealing with dead or weak batteries. Check the thermostat display for a weak battery if possible. If you can't see the display, change the batteries and switch the unit on.
  • Reset to factory settings: Follow the manufacturer's instructions and reset the thermostat to factory settings.
  • Unplug and reset: If you have a window AC unit, it may help to unplug the system and reset it again.

Not Enough Airflow

A unit that doesn't have enough airflow is inefficient and can't provide comfortable temperatures. Usually, there's a blockage that needs to be addressed for the flow to return:

  • Check the air filters: Dirty air filters prevent proper airflow. To check, remove them and hold them up to the light. If you can't see through the filters, replace them.
  • Inspect the vents and registers: Seemingly small or everyday obstructions can cause significant airflow blockages. Curtains, a pile of clothes, or party decorations can all contribute to restricted airflow. Remove obstructions from the registers and see if it helps.  

The AC Is Running But Not Cooling

If the unit is switched on and running but there's no cool air, blocked filters or frozen coils could be the reason your air conditioner isn't working. Try these 

  • Change the filters: Replace old or worn filters with new ones regularly.
  • Let frozen evaporator coils thaw: Ice buildup can restrict refrigerant flow and airflow. Turn the unit off and let the ice melt. Then, inspect the coils for any dirt. Frozen evaporator coils can indicate a bigger issue, like a refrigerant link, so it's best to have them inspected and replaced, if necessary, by an experienced AC technician. 

Still Having AC Issues? Find a Professional Near You

If you've tried these troubleshooting tips but the AC isn't coming on, it may be time to call an AC technician. One Hour Heating & Air Conditioning® is your dependable AC expert. We offer straightforward pricing, are available 24/7, and provide punctual services you can trust. 

Request an appointment from one of our locations nearest to you, or call (800) 893-3523 today.