What is a common indicator of a malfunctioning pump?

A common indicator of a malfunctioning pump is the presence of noise during operation. This noise can manifest in various ways, such as grinding, rattling, or loud vibrations, which may suggest that components within the pump are worn out, misaligned, or suffering from mechanical issues. When a pump operates normally, it tends to run quietly; any unusual sounds indicate that something may be amiss.

While consistent water pressure is usually a sign of a functioning pump, noise typically points to a mechanical issue that could lead to further damage if not addressed. Visible water leaks can indicate issues elsewhere in the plumbing system or components rather than the pump itself. High energy consumption might be related to a malfunctioning pump but is not as definitive as noise, which directly reflects operational problems. Thus, noise is a clearer, more immediate sign of a pump that needs attention.