During routine maintenance, what should a technician check to ensure system efficiency?

To ensure system efficiency during routine maintenance, it is essential for a technician to check electrical connections, refrigerant levels, and airflow across coils, as all of these factors play a critical role in the overall performance of an air conditioning or refrigeration system.

Electrical connections must be secure and free of corrosion, as poor electrical contact can lead to inefficient operation or even system failure. Ensuring that all connections are tight and functioning optimally supports reliable system performance.

Refrigerant levels are crucial because they directly affect the system's ability to cool or heat effectively. If the refrigerant levels are too low or too high, it can lead to inefficiency, increased energy consumption, or even compressor damage. Regular checks help maintain the appropriate refrigerant charge, ensuring the system operates efficiently.

Airflow across coils is another vital component of system efficiency. Insufficient airflow, often caused by clogged filters or obstructions in the ductwork, can lead to reduced heat exchange efficiency, which impairs the system's ability to maintain desired temperatures. Ensuring proper airflow is essential for optimal heat exchange and energy use.

By checking all of these aspects, a technician can help ensure that the system operates at its highest efficiency and reliability, reducing energy costs and prolonging equipment lifespan. Therefore,