Will AC affect my allergies?
Air conditioners control the quality of air you breathe in when you enter the space it services. This may be beneficial for allergy sufferers only if the air conditioner is regularly maintained with a high quality filter such as the MERV-13 filter.
ACs work by circulating the air through a filter and a coil and back out. If the filter and the internal components of the system is not maintained regularly, pollutants such as mould, dirt, dust, and even pathogens can be circulated back into the room.
If you have allergic reactions when the AC is turned on, your body is most likely just reacting to the pollutants being circulated by the system. The best way to limit allergies with air conditioning is to schedule yearly maintenance and regularly wash out your high quality filter.