Hope this helps.
It is a great system, but it needs to be maintained to work at fullest capability so be prepared to check on the system periodically.
It is definite a viable heat source in NE. As with anything that is "unfamliar" to the average buyer, there is some trepidation around these installed systems. But most people get over that when they see the heat bill.
There aren't many viable areas to build them though.
Feel free to contact me and give me more details about your situation.