Water Damage Restoration Technician (WRT) Certification Practice Test 2025 - Free Water Damage Restoration Practice Questions and Study Guide.

Refrigerant dehumidifiers are designed to operate efficiently in warmer temperature ranges, particularly between 70° to 90° F. At these temperatures, the refrigerant inside the dehumidifier effectively absorbs moisture from the air because the higher heat levels enhance the evaporation of water, allowing for better moisture removal.

Within this range, the capacity of the refrigerant to absorb heat and, subsequently, remove humidity increases, making it optimal for environments that are warmer and more humid. This functionality is critical, as it helps to maintain proper indoor air quality and prevents the growth of mold and mildew.

The other ranges provided do not encompass the most efficient operational conditions for refrigerant dehumidifiers. For instance, lower temperatures such as 60° to 70° F may not allow the dehumidifier to function at peak efficiency because the reduced heat slows down the process of moisture evaporation, resulting in diminished removal rates.