Running your fan for longer may help to even out the temperatures between rooms in your home, however the fan can use a lot of energy and increase your electric bill. You won’t see fan control options on your thermostat or in the app.Ĭhanging fan settings can change comfort and energy savings.The fan can only run while your system is actively heating or cooling.If there isn’t a wire in your thermostat’s G connector You’ll see a fan icon on the temperature screen when your fan is running because of your fan schedule, or if you’ve turned your fan on manually.It can’t be set to automatically run or switch off when you leave or come home. You can set the fan to run a fixed schedule or manually set it to run.You cannot run the fan if your thermostat is set to Off. However, you can only run the fan when your thermostat is set to a temperature mode (like Cool mode, for example).So your system doesn’t need to be actively heating or cooling to run the fan. You can run your system’s fan independently of heating or cooling.If there is a wire in your Nest thermostat’s G connector Important things to know about fan control For example, you can set the fan to run all night and automatically turn off in the morning. If you have a system with a dedicated fan wire, you can manually turn on the fan with the app or your thermostat, or set a fan schedule. If not, your fan will only run automatically when your system is heating or cooling. If your forced air system has a separate fan wire in your Nest thermostat’s G connector, you can run the system fan when it’s not heating or cooling. Forced-air systems run the fan whenever they’re heating or cooling.

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