Hello: I am new to the forum and have a question I hope someone might be able to answer. I have a well insulated 20ft by 22ft building in which I wish to store case goods (wine). I would like to find a heat pump with a high SEER (to work at low outdoor temperatures) that would keep the building about 50F in the winter and in the high 50's during the summer. All the systems I look at will only cool to about 62-64F and most don't have a low winter temperature setting. Is there something in the market that would allow me to do what I need without going to separate heating and cooling systems? It seems to me that this must be a possible configuration to achieve with a heat pump, but that there is not enough demand in the market?
Thanks for you help.