The Jandy Legacy 250,000 BTU, Digital, Natural Gas, Polymer Header Heater is a heater that will warm your swimming pool and spa water quickly and efficiently. This natural gas heater is built for durability and ease of use. Its electronic ignition helps to conserve gas by only lighting the pilot when heat is needed. With its copper heat exchanger and flo-thru baffles, the heat transfer creates increased energy savings. This heater is built to stand the test of time. Specifications: Natural Gas, 250,000 BTU, 2/2.5” CPVC universal union connection, 120VAC and 240VAC, Can be installed indoors or outdoors with proper ventilation