Putting in new light bulbs. Efficient appliances. Unplugging everything when you leave. It saves energy sure. But it’s a drop in the bucket compared to what a thermostat can do. Your thermostat controls half your energy bill. And it’s wasting energy. With a smart thermostat connected to your home WiFi, you can control the AC at your home from anywhere in the world. A smart thermostat is a key element of a modern smart home. Have full control of your AC system and save up to 30% of your electricity bill.