Heat up your pool and spa water quickly and efficiently with the Jandy Legacy LRZ Heater. With a BTU input of 400,000, this heater is perfect for use with in-ground pools and spas. Using natural gas and a millivolt standing pilot, this heater is easy to operate and temperature monitoring is easy with its built-in on/off switch control panel. Reliable and energy efficient, this heater features a copper heat exchanger and Flo-Thru baffles for the quick transferring of heat. Great for indoor or outdoor installation, the Jandy Legacy LRZ heater keeps your water comfortable and ready for you and your family to enjoy.