Product Information:This heater is not for use in the state of CaliforniaHayward's induced draft heater for aboveground pools and spas combines stateoftheart technology with ease of operation and superior performance. Featuring an electronic, direct spark ignition system and an energyefficient FireTile lined combustion chamber, the Hayward heater provides 100,000 BTU input, while delivering 81 thermal efficiency and quick heating. An integral induced draft system makes this heater completely impervious to any high wind situations. A onepiece copper header/heat exchanger provides for leakfree performance. And a simple plugin 120 volt electric cord is provided for simple installation.Due to the fact that this heater is MADE TO ORDER, allow at least 10 days for assembly. If a return is requested and accepted there will be a substantial restocking fee. Please be sure to choose the correct heater before purchasing.