Nest Thermostat Black Friday Deal 2021: Cheapest Price Today. If you want to start upgrading to a smart home setup, but don’t want to spend a ton, you can’t afford to miss this incredible Nest Thermostat Black Friday deal — which sees it on sale for only $179 in the Walmart Black Friday deals, after a massive $70 discount. Like most of the best Black Friday deals, though, there’s only a limited amount of stock available, so shop now or risk missing out. To stay up to date with latest top stories, make sure to subscribe to this YouTube channel by clicking the button above this video! As smart home devices have started to become a significant product category, companies like Nest and Ecobee have started offering smart thermostats that dynamically set the environment’s temperature through A.I. Top-end smart thermostats don’t come cheap, but fortunately, there’s a fantastic deal that you can get at Walmart. You can buy the 3rd-generation Nest Smart Learning Thermostat for just $179, a $70 discount on the original price of $249.