Heat pumps represent roughly the same goal as nuclear -- the physics makes it possible for great efficiency gains and just needs engineering & clever management of installation lifecycles to get the cost down.
To be clear, digging up your yard is for highly specialized geothermal heat pump installations. We should be skeptical of these projects because the geologic sites that allow it to be cost effective are quite rare. Normal heat pumps are just an air conditioner with a reverse configuration (not to minimize some of the difficulties of both implementing and then successfully retrofitting this)
To be clear, digging up your yard is for highly specialized geothermal heat pump installations. We should be skeptical of these projects because the geologic sites that allow it to be cost effective are quite rare. Normal heat pumps are just an air conditioner with a reverse configuration (not to minimize some of the difficulties of both implementing and then successfully retrofitting this)