If your thermostat isn’t signaling your air conditioner to start, it won’t activate.
The most important part is checking it’s on “cool” and not “heat.” Otherwise your air conditioner will probably not switch on. Or you may get. heated air blowing from vents since the furnace is going instead.
If you’re using a digital thermostat:
- Replace the batteries if the monitor is blank. If the monitor is showing jumbled characters, get a new thermostat.
- Ensure the correct setting is displaying. If you can’t change it, cancel it by decreasing the temperature and pushing the “hold” button. This will cause your AC to run if scheduling is incorrect.
- Test setting the thermostat 5 degrees cooler than the house’s temperature. Your AC won’t start if the thermostat is identical to the room’s temperature.
Once your thermostat is calibrated properly, you should start getting chilled air promptly.
If you’re using a smart thermostat, such as one made by Nest, Ecobee, Lux, Honeywell or Bosch, go to the manufacturer’s website for help. If it still won’t work, call us at 843-485-0967 for support.