Plumbing is one of the things that differentiate human beings from animals. Having clean running water in your faucets and showers and a drainage system to take out used water from the house into the main sewer line makes life much more convenient. Ever heard stories...
Air conditioners often suffer from familiarity blindness. They get installed and then people forget all about them. They are ever present in the home with their settings constantly changed via remote control but no one really looks into them. This is a problem. ACs...
