Hi Dwills01,
Thank you for posting in the community. I understand you are looking for an option to help your Nest Learning Thermostat (4th gen) maintain a 50% relative humidity level. I'm happy to help!
Currently, your Nest Learning Thermostat (4th gen) can be set to maintain a specific relative humidity level, such as 50%, provided it is connected to a compatible whole-home humidifier or dehumidifier system.
The feature is managed using the Google Home app. You can refer to this article to set your preferred humidity level: Set up Humidity Helper on your Nest Learning Thermostat (4th gen).
Additionally, you can use the optional Smart Humidity feature, which automatically adjusts the humidifier setpoint based on outdoor weather to help prevent condensation on windows during cold weather.
Keep me posted.
Regards,
Melany
