What is a critical safety measure to take when servicing HVAC equipment?

Disconnecting power to the unit is crucial when servicing HVAC equipment for several reasons. Firstly, it prevents accidental electrical shock, which can be life-threatening. HVAC systems often involve high voltages, and even low-voltage components can pose significant risks if touched without proper safeguards.

By ensuring that the power is disconnected, technicians can safely inspect, repair, or replace components without the risk of electrical hazards. This measure is part of standard lockout/tagout procedures used in many industries to promote safety when working on machinery and electrical systems.

Other measures, such as wearing protective gloves, while important, do not address the immediate and critical risk of electrical shock associated with servicing live equipment. Turning the unit on to check for leaks is counterproductive and dangerous, and using any tool available without considering suitability or safety can lead to accidents and injuries. Thus, disconnecting the power stands out as the most essential safety measure.