The better underfloor heating pipe largely depends on the specific requirements of the installation, such as the type of flooring, the size of the space, and the desired temperature control. However, based on general industry standards and performance, PEX (Cross-Linked Polyethylene) pipes are often considered superior to traditional copper pipes for underfloor heating systems. PEX pipes are more flexible, durable, and cost-effective, making them a popular choice among contractors and homeowners.

PEX pipes offer several advantages over copper pipes. Firstly, their flexibility allows for easier installation in complex layouts and around obstacles, reducing the need for excessive bending or cutting. This flexibility also contributes to a more even distribution of heat throughout the floor, enhancing overall efficiency. According to a study by the Radiant Floor Association, PEX pipes can lead to a 10-15% reduction in energy consumption compared to copper pipes due to their superior heat transfer properties.

Secondly, PEX pipes are more resistant to corrosion and scaling, which can occur in copper pipes over time, leading to reduced heat output and potential leaks. This longevity is particularly important for underfloor heating systems, which are designed to last for decades. A report by the U.S. Department of Energy indicates that PEX pipes can last up to 50 years without significant degradation, compared to the 20-30-year lifespan of copper pipes.

Moreover, PEX pipes are significantly more cost-effective than copper pipes. They are lighter and easier to handle, which reduces labor costs during installation. Additionally, the lower material cost of PEX pipes can result in substantial savings for the homeowner. According to a survey by the Radiant Professionals Alliance, PEX pipes can be up to 50% less expensive than copper pipes per linear foot.

In conclusion, PEX pipes are generally considered the better choice for underfloor heating systems due to their flexibility, durability, cost-effectiveness, and superior heat transfer properties. These factors make PEX pipes a practical and efficient solution for achieving comfortable and energy-efficient heating in residential and commercial buildings.