So what would a thermostat for your home heating and air look like if a guy left Apple and made it?

It would learn your preferred temperatures and schedule.

It would sense when you left the house or came back.

It would give you tips about your energy consumption.

It would be a wi-fi device and you could control it from anywhere.

It would be cool looking.

It would be simple to use.

Well Tony Fadell is that Apple guy and Nest is his company.

Nest replaces most home thermostats and runs $249 and professional installation for the first unit is $119 and $25 for each additional.

Katherine Boehret over at AllThingsD has written up some details about this forthcoming home technology.