Condensation pumps: water freezes in winter!

Both the GSHP and the  ASHP water heater generate condensation. In the summer, like any air conditioner, the GSHP produces condensation that must be dumped somewhere. I don't have floor drains in my basement, so I have two choices: basement sink or outside the house. We had planned to run the output of the condensation pump outside like it had been for the old system. Then one of the astute people working on the project realized that my ASHP might generate condensation year round -- in which case it could not be vented outside else it would freeze!! Apparently they've seen that happen a few times. While we had hoped to use one condensation pump, because of the locations of the GSHP, the ASHP, and my basement sink, we ended up getting a second condensation pump and we'll run both of those in to the basement sink.