Hello! Running a Carrier (Bosch) unit that is brand new in a new construction house. HVAC sub wanted wayyy to much money to install desuperheater and tank, but the geo unit has the stuff so I plan to do my own dual tank setup. Looking to maximize my investment here: I have a 'free' new 50 gallon electric Bradford White tank that I can either use as the main tank or the preheat tank depending on what is best. Do I: 1. Buy the Lowes/Home Depot el-cheaper 50 gallon electric tank to use as a pre-heat tank and then keep the Bradford tank as the finish tank? This will cost about $600 or less for tank and plumbing. 2. Buy a higher end electric tank for the finish tank and use the Bradford tank for the pre-heat? Cost ??? depending on the finish tank. 3. Buy a hybrid heat pump 50 gallong heater for the finish tank and use the Bradform tank for the pre-heat? This would cost about $1000 for the heat pump tank, plus the plumping parts. But! With a Lowes 10% coupon, a $300 local power company rebate and a federal tax credit, this options isn't very expensive in the long run! Does a desuperheater work good or OK with a hybrid type heat pump water heater for the finish tank? If so I'm starting to lean that way... I've seen lots of DSH plumbing diagrams online. What is the best way to do things? Do you need ball valves, check valves and air vents in places (where?) to do it best? Since this is new construction and we aren't even in the house, I want to do it best and 'right' the first time! Thank you!