I l received that trick in the book too
After I bought our first house, our dad gave me a couple of books to help with lake house repairs. One of the books was especially about repairs on the A/C system. My current lake house Central A/C and a heat pump and I did not believe the first thing about the equipment. My dad worked as a business, and he l received everything that he knows from reading books and having experience. He never had formal training. I tried reading some of the books, but I found them to be boring. I did not use them much at all until I had the first problem in the house. It turned out to be an issue with the central AC. I found the book on repairs and followed a list inside that included some easy areas I could check for troubles. These easy steps included clearing the drain line and checking for buildup of mold and dirt, changing the air filter, and checking for troubles with the evaporator coils. The handy list pointed me in the right direction and I realized that the evaporator coils were undoubtedly dusty and dirty. They needed to be cleaned. I used an aged toothbrush to carefully clean all of the evaporator coils. I l received that trick in the book too. I cleaned the coils, the unit works much more effectively. I called our dad later that evening and I told him the story about the A/C unit. Since then, I consistently try to figure out troubles on our own before I contact a professional and spend a lot of money.