During a pressure test for a single-family dwelling, the system should show no change in pressure for how long?

The correct duration for a pressure test in a single-family dwelling is typically 10 minutes. This time frame is necessary to ensure that the entire propane system, including all connections, joints, and fittings, remains stable under pressure without any leaks. A 10-minute duration provides a practical balance between being long enough to detect any gradual pressure loss while also allowing for an efficient testing process.

Having no change in pressure during this 10-minute window indicates that the system is tight and functioning properly. This requirement is crucial for maintaining safety standards and ensures compliance with installation codes. Adequate testing helps prevent hazardous leaks that could result from improper connections or system failures.

Shorter or longer testing times may not provide sufficient assurance of the system’s integrity. For instance, a 5-minute test might not detect minor leaks, while a 15 or 30-minute test may be seen as unnecessary and could extend project timelines without significant benefit. Therefore, adhering to the 10-minute standard is both practical and effective for ensuring the safety and reliability of propane installations.