We are getting quite a bit of condensation off the pipe work for the ground loops. Often the anti-freeze in the ground loops is below freezing, so this isn’t too surprising. The main issue is that the drips fall onto the electrics for the ground source heat pump, particularly the switch for the 3 phase supply. Although the switch is IP65 rated, I wouldn’t want to see it get wet over a prolonged period.
The answer has been to install 4ft of plastic guttering underneath the pipework. This catches the drips and prevents the electrics getting wet. I suspect that these drips will just evaporate once in the gutter.
The 4ft of guttering catches the drips of condensation from the pipework above. In hindsight, we probably should have thought about the location of the cabling, but we had little option at the time.
There is no point in trying to stop the condensation. We have decided to just capture the drips before they hit the electric cables.