PEX tubing should not be installed within the first how many inches of piping connected to a water heater?

PEX tubing is made from cross-linked polyethylene and is often used for its flexibility and resistance to scale and chlorine, among other benefits. However, one important limitation is that it can be sensitive to high temperatures, particularly in the vicinity of water heaters, where it can be exposed to significant heat.

The recommendation to not install PEX tubing within a certain distance from a water heater is crucial to prevent potential damage to the piping. Specifically, PEX should not be installed within 24 inches of the water heater to avoid overheating. This distance helps ensure that the PEX does not experience undue stress from extreme heat, which could lead to failure or loss of structural integrity over time.

This safety measure is critical in plumbing installations to maintain the longevity and functionality of PEX systems. Ensuring compliance with this guideline contributes to a more reliable plumbing installation that minimizes maintenance issues and enhances performance.