Google points out that this new feature is primarily intended to alert homeowners of potentially serious issues before they occur, however cannot and should not replace regular HVAC tune-ups from a professional. While the Nest thermostat is great at detecting unusual patterns, problems such as deteriorating components or adjacent issues resulting from an original malfunction can only be reliably caught and prevented by an HVAC specialist.
Google has now created a feature allowing the Nest smart thermostat to detect and diagnose potential errors in your HVAC system. By noting your home’s temperature preferences and history, as well as current weather reports, the Nest thermostat is privy to unusual behaviors and patterns in your unit. For example, if your home is taking too long to cool down, or failing to adapt to weather appropriately, the Nest thermostat will notice and send the owner an email notification and assessment of which system has been affected (air conditioning or furnace). Google reports that while there are certain malfunctions the Nest thermostat will not be able to detect, its diagnostic ability is projected to improve over time with the help of user feedback. Users wishing to utilize this new feature can sign up on the subscribers’ list or opt-out if preferred.