Joe was thinking of getting a NEST thermostat, but he doesn't want to pay a fee. Rich says the only fee you pay is for buying the device. NEST uses WiFi to connect to the internet, where you can control it using your mobile device. But you don't have to pay a subscription fee to use it. Can you control it using your computer? Rich says you should. But the NEST doesn't have to be programmed since it uses machine learning to learn how you want it to operate. Also check with your energy company. NEST also offers a $50 rebate.