Can pex pipe be used for hot water

　　Yes, PEX pipe can be used for hot water. In fact, PEX is commonly used for both hot and cold water plumbing systems in residential and commercial buildings. However, there are some important considerations:

　　Temperature and Pressure Ratings: PEX pipes are typically rated for water temperatures up to 180°F (82°C) at 100 psi (pounds per square inch). This is more than sufficient for most household hot water systems, which usually run at temperatures between 120°F and 140°F.

　　Compatibility: Make sure to use the appropriate fittings and connectors designed for PEX pipe when installing it in a hot water system. Not all materials are compatible with PEX, so it's important to ensure that the connections are also rated for hot water.

　　Expansion: PEX expands and contracts with temperature changes. Ensure that there’s enough room for expansion in the system, particularly when running PEX in areas where temperature fluctuations are significant.

　　UV Sensitivity: PEX pipe is sensitive to ultraviolet (UV) light, so it should not be exposed to direct sunlight for long periods, especially when used for hot water systems. It’s typically installed in walls or hidden behind surfaces where it is protected from UV exposure.

　　If you're planning to use PEX for hot water, it's always a good idea to check local building codes and the manufacturer's guidelines to ensure it meets the specific requirements for your installation.