What is one role of dehumidification in cooling comfort and building protection?

• A. Lower humidity increases rate of evaporation from the skin, improving comfort
• B. Higher humidity improves comfort
• C. Humidity has no impact on energy use
• D. Dehumidification reduces indoor air quality

Answer: (A)

Lowering indoor humidity boosts cooling comfort because evaporation of sweat cools the body, and this evaporation happens more efficiently when the air is drier. In humid conditions, sweat lingers on the skin and evaporates slowly, so you feel warmer even at the same air temperature. By dehumidifying, you allow that natural cooling mechanism to work more effectively, making a space feel cooler and more comfortable. Dehumidification also helps protect the building by reducing condensation on cool surfaces, which lowers the risk of mold growth and moisture-related damage to walls, insulation, and framing. The other ideas miss the point: humid air does not improve comfort, humidity does influence energy use through latent cooling requirements, and reducing dampness generally improves indoor air quality rather than hurting it.