Set up Humidity Helper on your Nest Learning Thermostat (4th gen)

If you have a humidifier or dehumidifier system, you can use Smart Humidity and Cool to Dry to  to adjust the humidity level and set a Quiet Time schedule. You can customize your humidifiers and dehumidifiers simultaneously since Nest Learning Thermostat (4th gen) has terminals to support both.

For more information on using your air conditioner or heat pump to help reduce excessive humidity in your home, refer to Learn about Cool to Dry.

Humidification and Dehumidification

By default, your humidifier and dehumidifier are enabled. You can customize your humidification preferences through the Google Home app.

• With the Home app:
  1. Open the Home app .
  2. Tap Favorites or Devices .
  3. Tap your thermostat Settings Thermostat Humidity.
  4. Tap the Enable humidifier or Enable dehumidifier switch.
  5. Adjust your preferred humidity level.

Smart Humidity

The Smart Humidity feature uses outdoor weather to automatically adjust your humidifier setpoint, this helps to reduce condensation on windows or walls during cold weather.

• To turn on or turn off Smart Humidity:
  1. Open the Home app .
  2. Tap Favorites or Devices .
  3. Tap your thermostat Settings Temperature preferences Humidity Helper.
  4. Tap the Smart Humidity switch.

Quiet Time

Humidifier and dehumidifier systems can be noisy. You can set a Quiet Time schedule during times when you don't want the system to interrupt your sleep.

Note: Quiet Time only affects humidification or dehumidification. It doesn't impact fans used during heating and cooling.

• With the Home app:
  1. Open the Home app .
  2. Tap Favorites or Devices .
  3. Tap your thermostat Settings   Thermostat Humidity.
  4. Tap the Quiet Time switch.
  5. Adjust the times Quiet Time should turn on and off.
  6. Tap Save.