$40 Amazon GC w/ Nest Learning Thermostat

The Nest Learning Thermostat learns what temperatures you like, turns itself down when you're away and can be controlled from anywhere over Wi-Fi. The Nest thermostat learns from you - your temperature adjustments, your house, your patterns. Teach it well to stay comfortable at home and save energy when you're away.

The Nest thermostat uses its activity sensors to sense when nobody's home and turn itself to an energy-saving temperature. Auto-Away works in 90% of homes, even if Nest is in a room you don't use much.

Nest was designed to be a quick, easy install: three out of four people install Nest themselves in 30 minutes or less. The Nest thermostat is compatible with 95% of low voltage heating & cooling systems, according to Nest’s online compatibility checker. That includes gas, oil, electric, forced air, heat pump, and radiant.