In some parts of the world, the difference between summers and winters is huge. Winters are very cold while summers are very hot. There are also places, especially near the Equator, when temperatures are the same all year round. What does it mean? It means that Air Conditioning Pasadena MD can help if somebody feels like it is too hot or too cold for him. It would be impossible to find a place in the United States where the temperatures are always good and always the same, no matter what time of year it is. Summers will always be too warm and winters too cold to live without any heating or cooling at all.