Just what will this upgrade bring to the table? For starters, it will feature a couple of new modes, with Cool to Dry being one of them that will be able to turn on air conditioning in order to reduce humidity. There is also a “sunblock” setting which ought to prevent the thermostat from turning on unnecessarily whenever there is the presence of direct sunlight shining on the Nest’s sensor. With improved fan scheduling options thrown into the mix, folks would be able to better dictate which which particular hours should a fan come on, in addition to the length of time where it needs to remain on. Your Nest Learning Thermostat needs an active Wi-Fi connection in order to pick up the new firmware.