How long must a pressure test last in a residential home?

A pressure test in a residential home is essential for ensuring the integrity and safety of the gas piping system. It serves to confirm that there are no leaks that could pose a risk to residents or property. The duration of the test is critical because it allows sufficient time to observe any pressure drop that would indicate a leak.

In this context, a pressure test lasting for 10 minutes is the standard requirement. This time frame is long enough to accurately assess the stability of the pressure in the system following its initial pressurization. It provides a balance between thoroughness and practicality, ensuring that any potential issues are identified without unnecessarily prolonging the testing process.

Longer durations, such as 15 or 20 minutes, may provide more confidence in the testing, but they are not typically required as per industry standards, which consider 10 minutes sufficient for most residential applications. Similarly, a 5-minute test might not provide enough time to detect minor leaks, which is why it is deemed inadequate for ensuring safety. Thus, adhering to the 10-minute duration aligns with regulatory standards and best practices in the industry.