 This material is the material that does that dehumidifying work. So you can see it right here. As the air comes through it, it both cools and dehumidifies. The material takes care of the water vapor, absorbs it. Grama says these improvements are essential to meet the needs of a growing middle class in hot countries like India, Indonesia, and Mexico. The International Energy Agency predicts that 10 new AC units will be sold worldwide annually.