Air Systems Cleaning Specialist (ASCS) Practice Exam

Inefficient energy consumption is a common issue in poorly maintained HVAC systems. When these systems are not properly maintained, factors such as clogged filters, dirty coils, and malfunctioning components can lead to increased energy use. HVAC systems rely on clean filters and components to operate efficiently; when they're compromised, the system must work harder to achieve the desired temperature, resulting in higher energy bills and unnecessary strain on the system.

While consistent performance and increased air quality might sound appealing, they are typically associated with well-maintained systems. Poorly maintained systems usually lead to fluctuations in performance, not consistency. Similarly, decreased air pressure can occur in problematic HVAC systems, but it is a symptom of issues like duct blockages, not a direct consequence of neglecting maintenance. Hence, inefficient energy consumption stands out as a primary concern tied to the overall neglect in the upkeep of HVAC systems.