Earlier quoted context omitted.
I made the money back heating my house in the bay area in 5 months. The Nest is just much better at using energy efficiently.
That's a savings of $60 on heating per month, for five months. The laws of thermodynamics continue to be enforced regardless of bubble or not, so I think it quite impossible to save more than 10%. So you're averaging $600 or more to heat. Averaging... I live in Wisconsin where I would be hard pressed to spend $300/month during the worst imaginable weather (and this is five months... the worst imaginable weather is ..…
a) It is a historically cold year for a prolonged period of time
b) You set your heat to 80F all the time
With gas heating, it looks almost impossible to save $250... unless you're heating an NBA arena.