I don't have an idealogical horse in this race, but I bought a ~2500sqft home a few years back in an area where summer highs can get to 100f and winter lows can reach -25f. The house only had a 20 year old electric furnace and no AC. Replaced it with a large heat pump system with a new electric furnace for backup heat when it gets super cold. Also included an air filtration system. It was a big cash outlay, but totally worth it as we now have AC in the summer so we can keep windows closed when the smoke is bad, the filtration system works really well for the smoke, and the system almost never needs to use the furnace backup. Speaking with the previous owner, the winter electric bill savings have been around 30%.