An air conditioner (AC) will work more efficiently and effectively if it is not exposed to direct sunlight. Direct sunlight on a window with an AC unit can have several negative effects on the AC's performance:
Heat gain: The direct sunlight will heat up the window glass and the surrounding area, causing additional heat to enter the room. This heat gain will make it harder for the AC to cool the room efficiently, as it will need to work harder to overcome the incoming heat.
Increased load on the AC: The added heat from direct sunlight can increase the cooling load on the AC unit. The AC will have to run for more extended periods or at higher power levels to maintain the desired indoor temperature.
Reduced cooling efficiency: The increased load and heat gain can reduce the cooling efficiency of the AC. It may struggle to reach the set temperature or fail to cool the room adequately.
Increased energy consumption: The AC working harder to combat the extra heat will consume more electricity, leading to higher energy bills.
To maximize the performance and efficiency of a window AC unit, it is best to install it on a window that does not receive direct sunlight. If possible, choose a window that is shaded or faces away from direct sunlight during the hottest parts of the day. Additionally, using curtains or blinds to block out sunlight during peak hours can also help improve the AC's efficiency and reduce energy consumption.
If you have no choice but to install the AC on a window with direct sunlight, consider using additional shading methods, such as external awnings or reflective window films, to minimize the heat gain and improve the AC's overall performance.