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Your cart is empty.The Raypak Electric 3-Series Titanium Pool and Spa Heater is the latest technology in pool and spa heating. The E3T is built with titanium heating elements and 316L stainless steel to withstand extreme pool water conditions, including salt water chlorinated pools. The Raypak E3T Pool Heater operates by utilizing the latest solid-state design and flow sensor technology. It has easy to use digital controls with diagnostics and the compact size makes it easy to install for new construction or replacement installations. Low temp/freeze protection modes If the inlet temp is lower than 36F (2.2C) with sufficient flow rate, the heater will operate at reduced heating capacity to prevent water from freezing inside the unit and return to normal operation once the inlet temp reaches 40F (4.5C) and meets the minimum flow rate. If the Inlet temp is less than 32F (0C), the unit will shut down to prevent damage and the control buttons will not function.