17 KW High Heat Transfer Twisted Tube heat exchanger swimming pool. The item “17 KW /21 KW High Heat Transfer Twisted Tube heat exchanger swimming pool” is in sale since Sunday, March 31, 2019. This item is in the category “Home & Garden\Yard, Garden & Outdoor Living\Pools & Spas\Pool Equipment & Parts\Pool Heaters & Solar Panels”. The seller is “rvparikh” and is located in Rockledge, Florida. This item can be shipped to United States.