Your AC’s circuit breaker may have been tripped: Find your breaker box and look for the circuit labeled “air conditioner” Try flipping that circuit to “off” and then “on” Give your air conditioner a couple minutes and see if it comes on now Did that solve your problem? YES NO This can be Caused by your Thermostat: Solution: Make sure your thermostat is turned On Set 3 degrees below room temperature Turn Cool, not fan or heat If the thermostat screen is blank, then the battery is dead. Replace the battery. Did that solve your problem? YES NO Your Air Filter May be Dirty Check yours and change if visibly dirty Did that solve your problem? YES NO Is your outdoor unit running? Yes No Make sure power is getting to the furnace Try this: Check your home’s electrical panel. Flip the furnace’s circuit to “off” and then “on” again. Look for a switch (like a light switch) near your furnace and make sure it is set to “on”. Yes No