ICC Commercial Mechanical Practice Exam

In HVAC systems, proper maintenance is essential for ensuring efficient operation. One of the most common consequences of neglecting maintenance is increased energy consumption. When HVAC systems are not regularly serviced, components such as filters, coils, and ductwork can accumulate dirt and debris. This buildup causes the system to work harder to achieve the desired temperature, leading to inefficiencies.

As the system struggles, it draws more energy to maintain performance levels, which directly impacts utility costs. So, increased energy consumption is a significant outcome of poor maintenance, as the system's efficiency drops, resulting in higher operational expenses over time. Regular maintenance, including cleaning and inspections, helps to restore and maintain the system's efficiency, reducing energy use and costs.

In contrast, options suggesting positive outcomes or lower costs result from neglecting maintenance do not align with industry standards and operational realities. Proper maintenance is designed to prevent the issues that lead to increased consumption, not to enhance initial costs or space utilization.