My sibling worked for a single Summer as an assistant at a local Heating, Ventilation & A/C company plus now he thinks that he knows all that there is to assume about heating, ventilation, a/c, plus air purification! It’s pretty annoying to me because I certainly do assume just about everything about the heating plus cooling profession, but that’s because for the past twenty years, I have been the owner of a local commercial heating plus cooling company, however not only did I get our Heating, Ventilation & A/C certification straight out of high college, but I’ve also been doing continuing education for the past numerous decades, and any time that new Heating, Ventilation & A/C technology comes out on the market, I’m the first a single to sign up for a class or lecture or tradeshow so that I can go plus learn all about it; But then of course our younger sibling, who is an absolute know-it-all, goes to work for a single Summer as an assistant to an Heating, Ventilation & A/C specialist plus all of a sudden, he knows just as much as I do about furnaces, air conditioners, plus air purification systems. I say that with all of the sarcasm that I can muster. Anyway, it’s gotten to the point where I can barely sit to be around our own sibling, but he just won’t shut up about all of the things that he supposedly knows about the heating plus cooling industry now… Some days, our patience is shorter than other days. I’m not a violent man, but I’m afraid that a single day I might just punch him in the mouth or something!