https://www.cnet.com/news/the-best-dehumidifiers-you-can-install-yourself-2018/

You need a dehumidifier if your basement is damp, if there's condensation on your windows or walls, if there's a musty smell, or if you see evidence of mildew or mold -- and especially if you notice all of the above. 

We tested six dehumidifiers you can set up yourself from Black & Decker, Frigidaire, GE, Honeywell, LG and Toshiba, with prices ranging from $179 to $329. While they all share similar designs and features, they're actually quite different from one another. Read on for a detailed look at each model, where they shine and where there's room for improvement, including our top pick for best all-around residential dehumidifier.