[micro_cam]

A standard heat pump water heater does that but will only provide a couple degrees of cooling to meet standard domestic hot water needs. You can also get pool heater heads for heat pumps/ac units though last time I looked not all were available in the us.

[jacknews]

Yes that's a great idea. When I said 'overflow ground loop', I obviously I meant 'dump any excess heat into your swimming pool'. In fact this surely makes sense for existing aircon, just for better efficiency.