What is the expected "average" or even "realistic optimal" horizontal closed loop temps in central Ohio throughout the year? This would be for an assumed properly sized loop for a properly sized and properly operating WSHP system. For example, in the last two weeks, with average/normal use, the EWT has been 54.8F. Does anyone have the approximate month to month temp for the heating and cooling season for this area?

I understand there are lots of variables, for example: 20% Methanol is being used as the antifreeze solution. Close counts here...