Jim Twamley teaches us how to perform RV air conditioning maintenance in this tutorial. It can be expensive to replace an air conditioner, cleaning it will help give it a longer life. First, remove the top of the unit by removing the screws from the front and back. After this, blow out the inside to make sure everything is nice and clean with air pressure. Next, clean the inside of the top of the unit with household cleaner and a clean rag. After this, replace the top to the unit and insert the screws back in. When finished, your unit will be clean for another several months before you need to clean it again.