The service ease design of these spa heaters provide easy access to internal controls. Brightly lit heat indicator "ON" lights are easy to locate and simple to operate. Added quality and safety are built right in with pressure switches to prevent operation without water flow. All of these featured heaters are backed by a standard manufacturer’s warranty and are available in various kilowatt versions. If you have any questions about selecting the ideal spa heat for you, please don’t hesitate to contact us.