Which factor is NOT typically a risk in poorly maintained HVAC systems?

In poorly maintained HVAC systems, comfort during extreme seasons tends to diminish rather than enhance. A well-maintained HVAC system is essential for optimal performance, efficiency, and indoor climate control. When such systems are neglected, they often become inefficient and can struggle to effectively heat or cool a space, leading to uncomfortable living conditions during extreme temperatures. Issues such as dust buildup, clogged filters, and malfunctioning components can impede airflow and reduce the system's ability to regulate temperature adequately.

In contrast, the other factors mentioned—higher energy bills, increased indoor air pollutants, and frequent breakdowns—are all typical risks associated with poor maintenance. Neglecting routine maintenance can lead to inefficiencies that drive up energy costs; it can also contribute to a buildup of dirt and allergens, resulting in poor indoor air quality. Additionally, systems that are not regularly serviced are more likely to experience frequent breakdowns due to wear and tear, ultimately leading to reliability issues.