Hi MSB2,
Thanks for reaching out. A few questions: what type of Nest Thermostat do you have? Do you have a separate fan wire connected to your thermostat's G terminal? If so, You can run your system’s fan independently of heating or cooling. So your system doesn’t need to be actively heating or cooling to run the fan.
You can set the fan to run a fixed schedule or manually set it to run. However, it can’t be set to automatically run or switch off when you leave or come home.
Please let me know if you still have questions, or concerns.
Best,
Jenelyn
