Frosted display Blends into the background. The Nest Thermostat E fits into any home with a frosted display that won't steal your decor's thunder. Remote control Download the free Nest app for iOS 8 or Android 4 or later. Then you can change the temperature from anywhere the beach, your office, or even your bed. Energy-efficiency Start saving from day one. Plus, you can check the Nest app to see how much energy you use and why. Home/Away assist Conserve energy when you're away. The thermostat turns itself down after you leave, so you aren't heating or cooling an empty home. Wireless connection Consume less power with a built-in rechargeable lithium-ion battery. Compatibility Upgrade your system. The Nest Thermostat E works with most 24V heating and cooling systems, including gas, electric, forced air, heat pump, radiant, oil, hot water, solar and geothermal.