I came across my first home with a Geothermal heating/cooling system. I tested the heating function of the system and it produced a temperature differential of over 25+ degrees from supply air to heated air from registers. I was hesitant to test the cooling function of the system due to the 60 degree supply air of the house and outside air temperatures below 50 degrees. With a geothermal system is there any risk to checking the heating and cooling functions of the system with regards to supply air temperatures? Outside air temperatures should not have an effect on the system unlike a heat pump system? Is there any risk to damaging the system due to supply temperatures or outside air temperatures with regards to heating or cooling?