One of the main issues that, in addition to making the AC dirty, can result in numerous issues with the AC is bird droppings. Bird droppings in and around the air conditioner can impede proper airflow. The indoor air quality can be harmed by the AC sucking it in with the outside air, which raises the risk of infection. Additionally, bird droppings may clog air filters, reducing performance and leading to a variety of other issues with the AC's working parts.