If your thermostat isn’t signaling your air conditioner to run, it won’t activate.
The key part is checking it’s on “cool” and not “heat.” Otherwise your air conditioning will probably not switch on. Or you might have. warm air coming from vents being the heater is on instead.
If you rely on a traditional thermostat:
- Put in new batteries if the monitor is empty. If the monitor is showing garbled letters, buy a new thermostat.
- Make sure the right program is displaying. If you can’t update it, cancel it by dropping the temperature and pressing the “hold” button. This will make your AC start if programming is not right.
- Test setting the thermostat 5 degrees cooler than the room’s temperature. Your AC won’t cool if the thermostat is set the same as the room’s temperature.
Once your thermostat is calibrated properly, you should begin getting chilled air quickly.
If you have a smart thermostat, such as one made by Nest, Ecobee, Lux, Honeywell or Bosch, go to the manufacturer’s website for troubleshooting. If you’re still having problems, call us at 510-343-9841 for help.