The above video is a good way for homeowners to get an idea of what is actually involved in air conditioning installations. Giving homeowners a bit of a rundown on why they do things the way that they are doing them. From why they are making sure things have right angles to how and why they are attaching them to the side of the house as they are.
Going step by step allows homeowners to see what they are doing as well as giving a short explanation as to the why and potential reasons they may have to come back out in a year if they do not do it.
Other people in this field may find this video useful as it does give the basics of what they do and does not go into too much detail.
A homeowner who is not at home but has repair guys coming over after watching this may have a bit more peace of mind and not feel like they have to follow both of the repair guys to know what they are doing.