Which of the following factors does NOT affect the load calculation of an HVAC system?

The factor that does not affect the load calculation of an HVAC system is the color of the building. While some may think that the color could influence heat absorption or reflection, particularly in terms of solar gain, it is generally considered a minor factor compared to other elements involved in load calculations.

Load calculations primarily depend on factors such as the orientation of the building, which influences sunlight exposure, and the number of windows, which have a direct impact on heat loss and gain. Additionally, the quality of insulation plays a critical role in determining how much energy is required to maintain comfortable indoor temperatures. Insulation affects the rate of heat transfer through walls, ceilings, and floors. Overall, the color of the building, while it can have some interaction with temperature effects, is not a critical component in the overall assessment of HVAC load requirements.