With so many things in our home that need cleaning, many of us don't immediately think of our television screens. However, Panasonic recommends cleaning the screen every week to reduce grime build-up that might eventually affect your viewing experience. Screens aren't the only parts of a TV that need cleaning, either. If your TV has poor airflow, Xiaomi warns that it can lead to overheating, which can be a fire hazard. Because of this, other brands like TCL say that you should clean the TV vents and ports at least once a year.