What safety practice should be followed when working on HVAC systems?

Turning off the power to the unit before servicing is a critical safety practice in HVAC work. This step is essential to prevent electric shock or accidental equipment activation while performing maintenance or repairs. When the power is disengaged, technicians can work on components like motors, wiring, and controls without the risk of energizing the system unexpectedly, which can lead to severe injuries or even fatalities.

Ensuring that the power is turned off also helps to protect sensitive electrical components from damage caused by shorts or surges that could occur if the unit is inadvertently activated while one is working on it. This practice is a fundamental principle in electrical safety protocols across many industries, including HVAC, establishing a secure working environment for technicians.

Other safety practices, such as checking electrical connections with a multi-meter, wearing gloves when handling refrigerants, and checking refrigerant levels before starting the unit, are important but should always follow the initial step of ensuring that the unit is powered down.