I will never forget the time when I was in high school and we had to have a school evacuation because of bad air quality coming from the air vents of the commercial central heating and air conditioning system.
It was the fact that the school had not had the entire ductwork cleaned in ages at that point.
And as a result of the lack of ductwork cleaning and the cold winter we were having that year that the air quality got so bad it was making everyone sick. So the school was evacuated and we had a free week off from school with no make up time needed! I thought that was totally awesome at the time. In the meantime during that week they totally cleaned the indoor air quality and had the ductwork deep cleaned. When we all returned back to school we could tell a huge difference in the air quality and it almost felt as nice as going to high end hotel in some upper class city! That is how good they cleaned that air quality. These days if this had happened we would have probably only had a day off from school. Because with today’s HVAC technology you could have cleaned up the issue the school had within less than 24 hours with the right air quality or heat and a/c professionals on the job. But back then, the technology to move so fast just did not exist yet. I guess I can say I am thankful for today’s technology all around and how things have changed.