Want to be a little greener and save some money on your heating and cooling bills while keeping your home more comfortable than ever? We've got good news for you: Amazon has the third-generation Nest Learning Thermostat on sale for $199, a $50 discount from its usual $249 price tag. That may sound like a steep price for a thermostat, but Nest estimates that its devices save the average customer 10-12 percent on their heating bills and 15 percent on their cooling bills. For the average American user, the annual savings add up to $131 or more, so the device can pay for itself pretty quickly. 

In addition to being green and thrifty, the Nest Learning Thermostat is also convenient. Since the Nest Learning Thermostat uses sensors to learn your schedule and detect when you're home, you'll never have to program your thermostat again. You won't be burning money when you're not around, but you'll be nice and cozy when you're home. Better yet, you can control the Nest Learning Thermostat with the Nest App, which will also send you temperature alerts, or with your Amazon Echo using Alexa. And while the inner workings of the Nest Learning Thermostat are complicated, installing one shouldn't take more than 30 minutes. You'll be saving money in no time.

Buy the Nest Learning Thermostat, 3rd Generation on Amazon for $199 (list price $249) 

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