Ground to air heat pumps could increase efficiency for air conditioning (which in hot and humid states is probably the largest line item for electric usage). Pa

Ground to air heat pumps could increase efficiency for air conditioning (which in hot and humid states is probably the largest line item for electric usage). Part of the problem here is the install cost means you likely want to share the ground source piping with 4 or more homes, but we don’t really do small scale self governance (build or share things amongst a dozen or fewer households) in the US anymore.