If your thermostat isn’t telling your air conditioner to work, it won’t turn on.
The most important part is checking it’s on “cool” and not “heat.” Otherwise your AC may not switch on. Or you may have. heated air moving from vents because the heat is on instead.
If you have a regular thermostat:
- Swap out the batteries if the screen is empty. If the monitor is showing jumbled letters, get a new thermostat.
- Check the proper setting is displaying. If you can’t update it, override it by lowering the temperature and pushing the “hold” button. This will cause your AC to run if the configuration is wrong.
- Test setting the thermostat 5 degrees below the room’s temperature. Your AC won’t cool if the thermostat is set the same as the space’s temperature.
Once your thermostat is calibrated properly, you should begin getting cool air quickly.
If you’re using a smart thermostat, like one manufactured by Nest, Ecobee, Lux, Honeywell or Bosch, go to the manufacturer’s website for assistance. If it still won’t work, call us at 636-206-4584 for help.