Which factor does not affect the performance of hot water heating and cooling coils?

The continuous removal of condensate is not a factor that directly affects the performance of hot water heating and cooling coils in the same way that other elements do. The primary function of these coils is to transfer heat to or from the air passing over them, and while condensate management is important for system efficiency and avoiding water damage, it does not influence the thermal exchange process directly.

In contrast, adequate air velocity is crucial as it ensures that enough air moves over the coil surface to facilitate effective heat transfer. A counterflow arrangement contributes to improved efficiency by maximizing temperature differences between the air and the water in the coil, allowing for better heat exchange. Air venting is important to facilitate the removal of air pockets that can insulate the coil and hinder performance, ensuring smooth water flow through the system for optimal heating or cooling.

Overall, while proper condensate removal is essential for the overall health of the system, it does not play a direct role in the thermal performance of hot water heating and cooling coils.