A:Answer Hey there! Thanks for your question. Yes, it is possible for a single Nest Learning Thermostat to control both your HVAC (heating, ventilation, and air conditioning) system and your dehumidifier unit, provided that certain conditions are met. Ensure that your HVAC system is compatible with your device. Most standard HVAC systems, including central heating and cooling systems, are compatible with the Nest thermostat. You can check compatibility using the compatibility checker tool here: https://store.google.com/intl/en_us/widget/compatibility/thermostat/ If you have more question and other concerns, please reach out to our dedicated team of specialists on the Google Help Center here: https://support.google.com/googlenest/gethelp