The mechanics behind a refrigerant-style dehumidifier are actually simple. Notice how moisture forms on the outside of your cold glass of water on a hot day? That's condensation, and once you know that, understanding how a dehumidifier works becomes a lot easier.The mechanics behind a refrigerant-style dehumidifier are actually simple. Notice how moisture forms on the outside of your cold glass of water on a hot day? That's condensation, and once you know that, understanding how a dehumidifier works becomes a lot easier...