Due to its difficulty of working on rooftop, the solar water heaters are generally installed by professionals. So, here are the tips for building a solar water heating system. Include a freeze protection valve to keep the system from freezing solid and cracking. They sense and pour out the water from system to circulate warm water. It is essential to have for passive systems. Install bypass, shut-off and drain spigot on the solar system to detach solar hot water collector without disconnecting water to existing hot water tank. Useful when system won’t have freeze prevention valve. If you’re living in a sunny climate, then it’s must to install scald guards to solar water heaters to prevent scalding danger to home occupants. Use PEX piping instead of copper and insulate PEX with right R-value of insulation based on the location to protect the heater from freezing.