If your thermostat isn’t signaling your system to start, it won’t switch on.
The most important point is ensuring it’s on “cool” and not “heat.” Otherwise your air conditioner may not switch on. Or you may get. warm air blowing from vents because the furnace is running instead.
If you’re using a traditional thermostat:
- Put in new batteries if the screen is blank. If the screen is presenting scrambled characters, get a new thermostat.
- Check the proper mode is on the display. If you can’t alter it, override it by lowering the temperature and hitting the “hold” button. This will force your AC to work if programming is incorrect.
- Try setting the thermostat 5 degrees cooler than the house’s temperature. Your AC won’t start if the thermostat matches the house’s temperature.
Once your thermostat is adjusted accurately, you should receive refreshing air quickly.
If you have a smart thermostat, including ones made by Nest, Ecobee, Lux, Honeywell or Bosch, look at the manufacturer’s website for help. If it still won’t work, contact us at 515-344-3579 for help.