If your thermostat isn’t signaling your AC to start, it won’t turn on.
The main step is ensuring it’s set to “cool” and not “heat.” Otherwise your AC will probably not start running. Or you could have. hot air moving from vents because the heat is going instead.
If you’re using a digital thermostat:
- Swap out the batteries if the readout is empty. If the screen is showing scrambled letters, buy a new thermostat.
- Ensure the proper option is displaying. If you can’t change it, reverse it by dropping the temperature and pushing the “hold” button. This will force your AC to work if the configuration is incorrect.
- Test setting the thermostat 5 degrees colder than the house’s temperature. Your AC won’t start if the thermostat is set the same as the house’s temperature.
Once your thermostat is calibrated accurately, you should start getting cold air promptly.
If you’re using a smart thermostat, including ones manufactured by Nest, Ecobee, Lux, Honeywell or Bosch, look at the manufacturer’s website for help. If you still can’t get it to work, reach us at 601-736-7362 for help.