Last winter, during one of the coldest months of the year, my furnace stopped working, so I did what I always do when something is broken and turned to YouTube. The man in the video made it seem like a very easy repair: remove the defective part, and replace it with a new part, easy enough, right? Boy was I wrong. I went to the hardware store to purchase the replacement part, and when I got home, I got to work. I got the old part out easily, and the new part was installed the way it was supposed to be, but when I went to turn my furnace on, it would not heat up. So I went back to YouTube, and then back to the hardware store for more parts, but the installation was not successful. I was getting frustrated that the repair was not going the way I hoped, but also, the whole time I was trying to fix the heater, it was getting colder and colder inside my house. My family was bundled up in sweatpants and jackets, but they were still getting cold. Knowing that something had to change fast, I called my local HVAC technician to come and assess my problem. Luckily he was able to get to my house quickly, and upon looking at my furnace, it didn’t take him long to diagnose the problem. The parts I replaced weren’t even the cause of my outage, so I spent a bunch of money for no reason, as the parts were not returnable. The technician explained the actual problem to me, and I realized that I would have never figured that out on my own. Next time I will definitely just call a professional.