What is the minimum depth required for a drain pan?

The minimum depth required for a drain pan is 1½ inches. This depth is specified to ensure that the pan can effectively collect and hold water that may leak from equipment, such as air conditioning units, without overflowing. Adequate depth is crucial because it provides enough capacity to temporarily contain any accidental discharge, preventing potential water damage to surrounding areas and maintaining safety standards.

A drain pan with this depth can also help facilitate proper drainage, as it provides sufficient space for the water to accumulate before it is directed to a drain or other disposal method. Adhering to this specification is important for compliance with mechanical code regulations, which aim to protect both the integrity of the building and the safety of its occupants.