We brokedown the design creation process into 3 different stages.  Each stage focused on one or more subfunctions of the system which aided in the process selecting the right equipment for our solution.   The first round primarily focused on the heat exchanger's design since that was the subfunction that would affect the system's reliability, efficiency and performance.  We ended up choosing the design which is similar to a radiatior due to it's high surface area which allows for the maximum amount of heat transfer to occur.  After that we took into consideration filtration, pipe material and temperature sensing equipment.  We ended up choosing from those options the follwoing.  We decided not to implment a filtration system since the utility doesnt justify the cost.  The water within the pipes will be cleared from the beginning so the risk of contamination and debri to interact with it is minimal.  For the pipe mateial it was decided that copper would be the best choice for the system, primarily due to it's high thermal conductivity, long lasting life, and it's corrosion resistance.  Lastly, it was decided for the temperature sensing equipment the ideal choice was a thermal couple, due to its low cost and long durability.  Finally for the last stage of our design process it was decided that when it came to pump head and how to plan around it, the best choice was going to be a high pump head heat pump, this is due to the fact that it can later be controlled to adjust the temperature need of the user.