When it comes to repairing pool heaters, it's important to know what type of heater you have and what the issue is before attempting any repairs. Some common problems with pool heaters include issues with the thermostat, ignition system, or pilot light. It's always recommended to have a professional technician diagnose and repair any issues with your pool heater to ensure proper functioning and safety. Regular maintenance and cleaning of your pool heater can also help prevent future issues and extend the lifespan of your equipment.