Since it's a brand new system I had the HVAC guy come back to check out the geo. Prior to the visit he called Carrier to make sure things were done right. Apparently the "balance point" for the system was set at 40 degrees. So with an outside temp at 40 or below the auxiliary heat helps out. The system is now set at 30 degrees. I was under the impression that the auxialiary heat didn't kick in until temperatures got a lot lower than that.
