Excessive moisture within a apartment and can be a awful thing for your air quality among many other things. It’s especially disappointing if your apartment is primarily constructed of wood and you have a lot of wooden furniture. Excessive moisture can cause the wood to rot and warp, and it can also cause mold and mildew to grow, and god forquote your air conditioning is too sizable for your house, because that will also mean that it will turn off and on too hastily, which does not give the method enough time to eliminate the humidity from the air! Also, if your roof tends to leak in certain spots, you’re in even worse trouble! You’ll end up with a cool, damp, musty apartment where mold and mildew can run rampant and wreak havoc on your respiratory system! You got to keep the moisture level in your apartment under control! Find and eliminate leaks… Properly size your air conditioning component for your home, so that it does a better job of eliminating humidity. If you guess that it is necessary, get your hands on a dehumidifier as well! Sporadically, not even the air conditioning component can remove enough humidity from the home, so a dehumidifier will serve you well, especially if you live in temperatures that have excessive heat and humidity, but with all of this more less under control, you may also want to invest in an media air cleaner, make sure your air ducts are cleaned out by a professional, and your air filter is fresh and new before you even bother with the air purification method though!