The JXI heater sets the standard for heating pools and spas with its exceptional energy efficiency and optional cost-saving integrated bypass technology. This feature diverts water flow away from the heater when there is no demand for heat, achieving an impressive 84% thermal efficiency rating and a low-NOx design. Additionally, the JXi is compatible with advanced automation systems such as AquaLink and iAquaLink, allowing for convenient control anytime and anywhere. Its ultra-compact and lightweight design facilitates faster and easier installation, making it a popular choice among pool professionals and owners.