Electric heat pumps actually don't work in very cold weather. Sure they do, their efficiency just drops to below the point where it remains feasible (i.e. chea

Electric heat pumps actually don't work in very cold weather. Sure they do, their efficiency just drops to below the point where it remains feasible (i.e. cheaper than furnace/boiler). Technology has come a long way and most of the world's population doen't seem to live in that 'very cold' weather, so I'd wager heat pumps are still the way to go. Especially ground source heat pumps thrive well enough in cold climates, just not always doable to install on existing sites. https://carbonswitch.com/do-heat-pumps-work-in-cold-weather/ https://carbonswitch.com/do-heat-pumps-work-in-cold-weather/ touches the subject; not the best source perhaps but searching for 'cold climate heat pump' gives plenty of info.