My dad and brother are both commercial service techs, and were over for the holidays. I was asking them about switching from conventional units to geothermal heat pumps, and doing away with one of my houses 2 units. This led to a suggestion that I might be able to use my swimming pool as a source. Has anyone heard of or considered this? The thought was that the worst case would be that I would need to bring out the drillers later and reroute my loops. All comments and sneers welcome....