I appreciate the honesty (or at least appearance of so) but it is a bit of a shame to go from a 'rocket propulsion engineer' to a heat pump sales man.

I’m always fascinated by how heat pumps (or reverse cycle units for Australians) are not the defacto standard in other countries and somehow come up for debate in the US. I remember watching one of the many TechnologyConnections videos on the subject and was wondering although interesting, what is with this focus on heat pumps being better than XYZ? Is the resistance to change really that great?

Being Australian, at least in Victoria, I don’t know of many houses that have gas heating. I also think it’s been a hot minute since I’ve seen household evap cooling, which I find has slowly been replaced by reverse cycle units given the climate has changed for us in VIC that the humidity increase over the years tends to make the evap units far less effective.