Which factor can contribute to a building's cooling load?

The energy efficiency of windows plays a significant role in a building's cooling load. This is because windows that are more energy-efficient can minimize the amount of heat that enters the building from outside. When windows are poorly insulated or allow a lot of solar heat gain, they can significantly increase the internal temperature, leading to a higher cooling load as the air conditioning system works harder to maintain a comfortable indoor environment.

Windows that are energy-efficient typically feature low-emissivity (low-e) coatings, double or triple glazing, and insulated frames, all of which help to reduce heat transfer. By lowering the amount of heat that enters the building, energy-efficient windows can effectively reduce the demand on cooling systems and lead to energy savings.

On the other hand, while flooring type, thermostat location, and construction style can all influence comfort and energy usage in a building, they do not have as direct an impact on the cooling load as the energy efficiency of windows does.