Hi All, I live on Long Island and have a climatemaster tranquility 27 with a cupronickel core connected to an open loop well the Unit has been in service for 5 years. The unit works great. But the water in my area is poor in every respect (ph, iron etc.). Instead of waiting to have problems I have decided to convert to a closed loop and with all the incentives in place it made sense to swap out the climatemaster as well. Our local utility is offering a 2k/ton rebate. I will now have a perfectly good GHP with, I assume, some wear that I am not using. Could anyone tell me if I am able to resell this unit and if so, how could I go about doing this? Thanks in advance for any help.