Which piping method is preferred for hot water distribution in residential plumbing?

PEX, or cross-linked polyethylene, is preferred for hot water distribution in residential plumbing primarily due to its flexibility, resistance to corrosion, and thermal efficiency. PEX can expand and contract with temperature changes, which helps to reduce the risk of pipe breakage from freezing. It is also lightweight and easier to install than rigid piping materials, allowing for quicker and more cost-effective installation. Additionally, PEX does not corrode or scale like metal pipes, ensuring a longer lifespan and the delivery of clean water.

Moreover, PEX has lower heat loss compared to other pipes, which improves energy efficiency in hot water systems. It is available in long length rolls, which minimize the number of fittings required and can also reduce places for potential leaks to develop. This combination of attributes makes PEX a highly favorable option for modern residential plumbing systems focusing on hot water distribution.