When pressure testing a single family dwelling, how long should the pressure reading remain stable?

The correct duration for a pressure test on a single-family dwelling to show stable readings is 10 minutes. This timeframe ensures that there is sufficient time to accurately determine whether there are any leaks in the system. During this period, any pressure drop would signal a potential leak, allowing for further investigation and necessary repairs. Adequate testing time is critical for safety, as undetected leaks can lead to hazardous situations, especially with propane.

A duration shorter than 10 minutes may not provide a reliable indication of system integrity, while longer tests, such as those spanning 15 or 20 minutes, could be unnecessary and lead to increased downtime without added benefit in terms of detecting leaks. Thus, the 10-minute standard ensures a balance between thoroughness and efficiency in confirming the system's soundness.