Houseplants tend to be quite temperamental when it comes to changes in air temperature and humidity, so it’s a good idea to keep them away from air conditioner units. If you can, place your plants away from any direct drafts to stop the fluctuations in temperature which can shock the plant. It’s also a bad idea to block airflow from the air conditioner, so make sure that you have at least a metre of space between the unit and any obstructions. That way, your plants will thrive and your air conditioner will work as intended.