How does my geothermal heat pump heat my hot water tank/UV filter and softner
It's heating the existing water in the tank. And the tubes between the pump and the tank don't carry water; they carry refrigerant. The pump heats the refrigerant using the latent heat of the well water. The refrigerant goes through a large coil in the tank, heating the coil. The coil is immersed in your soft/clean water.