Hi, I was hoping that someone could advise me on a good ground source heat pump. We built our house about 3 years ago and haven't put in a heating system yet. we have it plumbed for a ground source heat pump but put off the final expenditure of purchasing the heat pump. The initial people who advised me have been slow to come back to answer my questions about installing their favoured model and then I heard that the Glen Dimplex heat pump is meant to be very good made in Germany and with a high spec. I was wondering if any one else out there has experienced them and if so what the pump is like, what I should look out for etc. Or if there is another manufacturer I should look at. thank you...