The USA experiences four distinct seasons per year.
The seasons naturally flow into each other and the transitions are clear at every point. The seasons, winter, spring, summer, and fall, all have different characteristics. For example, summer and winter are at the extreme ends of the scale, with the former being the hottest season and the latter the coldest season. Spring comes just after winter, when the snow and ice thaw, and the plants begin to sprout back to life. Even the trees that shed their leaves gain new green coats. On the other hand, fall is almost like a preparation for winter. As its name suggests, fall occurs when the tree leaves fall, and flowers begin to wilt as the temperatures begin to drop steadily. Therefore, all four seasons have different temperatures, which mean adjusting the heating system accordingly. For me, the HVAC temperatures are highest during winter to create a warm haven inside my house, especially during snowstorms. I then set it at the lowest during summer so that it is cool enough to carry out my chores and errands without being exhausted from all the heat. Spring and fall seasons require constant HVAC system adjustments because their temperatures fluctuate throughout the seasons. One day can be cold and gloomy, with a bit of rain, while others can be very hot, with subtle hints of summer. One day can even have both hot and cold sessions. So, if you are indoors all day, you might find yourself regularly raising and dropping the thermostat temperatures. I find it very convenient that my heating and cooling system matches the temperature I prefer in my house.