If your thermostat isn’t giving a sign to your system to start, it won’t turn on.
The most important step is ensuring it’s switched to “cool” and not “heat.” Otherwise your AC might not turn on. Or you might receive. warm air blowing from vents being the heat is running instead.
If you’re using a digital thermostat:
- Swap out the batteries if the readout is blank. If the screen is showing jumbled characters, buy a new thermostat.
- Ensure the proper setting is showing. If you can’t alter it, cancel it by decreasing the temperature and pushing the “hold” button. This will force your AC to work if programming is wrong.
- Test setting the thermostat 5 degrees colder than the space’s temperature. Your AC won’t start if the thermostat is set the same as the house’s temperature.
Once your thermostat is adjusted correctly, you should receive cold air promptly.
If you have a smart thermostat, including ones made by Nest, Ecobee, Lux, Honeywell or Bosch, go to the manufacturer’s website for troubleshooting. If it still won’t work, contact us at 803-265-4208 for help.