The free credit represents a savings of 16% compared to the purchase price. Created by the same minds that brought you the iPod, Nest learns what temperatures you like, turns itself down when you’re away and can be controlled from anywhere over Wi-Fi. Rated 4 out of 5 stars from nearly 1,500 Amazon buyers.
Note that not all home HVACs are Nest-compatible; click here to see if it will work with yours.
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