In my highschool class, my good friend and I had a science teacher that decided to perform one of her experiments on the school’s central a/c unit.
She put a chemical my good friend and I made in the air ducts and air filter of the central a/c, but the chemical sent into the air ducts system of the entire school.
This chemical made everybody seriously sleepy, but another time my teacher used the hydronic heating system to spread a chemical. She mixed it with the water in the warm water boiler heating system, and this proved just as effective as the chemical in the air ducts and air filter of the central a/c, eventually my science teacher got fired, however she inspired me and I fell in cherish with Heating, Ventilation, and A/C units, but i started helping my friend wash her air ducts and she also showed me how to change an air filter in a central a/c and a furnace. The more I learned about Heating, Ventilation, and A/C, the more I wanted to know, and when I became a young adult, I took up an Heating, Ventilation, and A/C apprenticeship, & laboring part time in a heating and cooling contractor that specializes in heating and cooling equipment. The reason I was so inspired back when I was in highschool is because when my science teacher poisoned the central a/c air ducts, they had to call a cooling expert to come and wash out the vents. I was there and got to watch the Heating, Ventilation, and A/C serviceman wash out the air ducts and I then realized that being an Heating, Ventilation, and A/C serviceman was absolutely a really cool task!