How to install an air conditioner or ac installation depending on how you were brought up. Some people prefer to say air conditioner installation.

***If you live in a home built before 1978 please read this information https://www.epa.gov/lead. Your home may have lead paint and you don't want to create dust while working. A household vacuum cleaner shouldn't be used to clean the windowsill like I did in this video. Use wet cleaning methods to minimize lead dust created.