Air quality in HVAC systems focuses on filtration to prevent buildup on which components?

Air quality in HVAC systems focuses on filtration to prevent buildup on which components?

• A. Lighting fixtures.
• B. The outdoor air intake only.
• C. Cooling coils and other mechanical components.
• D. The room's furniture.

Answer: (C)

Filtration in HVAC is about keeping dirt from building up on the surfaces that transfer heat and move air. The most important areas to protect are the cooling coils and other mechanical components. When dust settles on cooling coils, it forms an insulating layer that reduces heat transfer, lowers system efficiency, increases fan and compressor workload, and can foster mold growth in damp spots. Keeping particulates out of these surfaces helps maintain cooling capacity, energy efficiency, and overall indoor air quality. Lighting fixtures and room furniture aren’t part of the air-path in the system, and while outdoor air may be filtered, the key protective target is the coils and internal components.

Filtration in HVAC is about keeping dirt from building up on the surfaces that transfer heat and move air. The most important areas to protect are the cooling coils and other mechanical components. When dust settles on cooling coils, it forms an insulating layer that reduces heat transfer, lowers system efficiency, increases fan and compressor workload, and can foster mold growth in damp spots. Keeping particulates out of these surfaces helps maintain cooling capacity, energy efficiency, and overall indoor air quality. Lighting fixtures and room furniture aren’t part of the air-path in the system, and while outdoor air may be filtered, the key protective target is the coils and internal components.