Saw a blurb about this but don’t know much about it, anyone’s thoughts on “heat pumps”?
Apparently they use electricity to bring heat from outside in to the house in winter, and draw heat out in summer?
Example article: https://www.energy.gov/articles/pump-your-savings-heat-pumps Now
If you’ve ever used an air conditioner you’ve used a heat pump. ACs are just one way heat pumps that take heat from inside and dump it outside. You can add a “reversing valve” to allow it to move heat in either direction, making a general purpose “heat pump”. They can be nearly 400% efficient, which is better than any other heat source.