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Run Fan instead of A/C to Cool 1 Room

Community Member

My office is typically 6-7 degrees above the rest of the home.  This is because of the computer equipment generating heat.  I have a temperature sensor in the office and 2 other rooms in the house along with the thermostat.

Let's say the active sensor is the office.  Let's say the office is at 76 F and the rest of the home is at 69 to 71 F.  Let's say the thermostat is set to keep the office to 75 F or below.  Currently, the thermostat will kick on the A/C and let it run until the office drops to 74 F.  This wastes energy.

Instead, I would like the thermostat to turn on the A/C's fan that moves air throughout the home, but not turn on the A/C itself.  This will move the cooler air from the rooms with 69 to 71 F into the office.  The office will cool off to 74 F.  The thermostat can then turn off the A/C's fan.  This will be much cheaper than running the A/C in addition to the A/C's fan.

When the temperature evens out throughout the home, then the A/C needs to kick on to get the office down to 74 F.


Community Specialist
Community Specialist

Hi Nathan31,


Thanks for posting here in the Google Nest Community forum. I understand how important this is, we’ll check it out.


To even out the temperature in your office and other rooms, one good thing to consider is having a zoning system. The zoning system and temperature sensor can work together to get the right temperature in each room.


Another thing you can do is set a fan schedule on your thermostat. Forced-air systems run the fan whenever they're 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. If not, your fan will only run automatically when your system is heating or cooling.

Set a daily fan schedule

  1. Tap the thermostat you'd like to control from the home screen.
  2. Tap Settings Nest settings icon.
  3. Select Fan Schedule.
  4. For Every day, tap the slider to turn your fan schedule on or off.
  5. Set how long you'd like to run your fan per hour. You can choose 15, 30 or 45 minutes of run time, or select 60 minutes to run your fan for the whole hour.
  6. Choose what time you want your fan to start running, and when you'd like your fan to stop running this schedule. If you have a multi-speed fan, you can select a fan speed for your fan schedule.

Let me know if that helps. 




Community Member

Thank you for the tip about the fan schedule.  That is a good workaround since my system supports it.  It means the fan will be blowing even when the temperature is even.

I would have to install a zoned system.  That would cost a few thousand to install.

Community Specialist
Community Specialist

Hello Nathan31,


Cool, we're glad to hear that. Let us know if you need further help.