IICRC WRT EXAM 2026/2027
ACTUAL QUESTIONS WITH
VERIFIED ANSWERS.
1. When is closed drying used? - correct answer-When the
outside air is too wet or cold to aide in the drying process.
2. Specifically if the outdoor humidity ration is higher than the
indoor then a closed drying system is used.
3. When using Refrigeration Dehumidification, the temperature
of the affected area must be... - correct answer-...maintained
as close to 80 degrees as possible.
4. All other things being equal, the temperature that will
increase the rate of evaporation the most is? - correct
answer-80 degrees
5. All conventional dehumidifiers and many of the LGRs do not
operate efficiently at... - correct answer-Higher temperatures
above 85 degrees.
, 6. What is the ultimate goal. - correct answer-Having the most
efficient drying is the ultimate goal, as technicians
incorporate the relationship of temperature, humidity, and air
flow.
7. Dehumidification - correct answer-The reduction of water
vapor in the air.
8. According to American Society of Heating, Refrigeration, and
Air Conditioning Engineers (ASHRAE) the most acceptable
indoor humidity range for health and comfort is... - correct
answer-...between 30%-50% humidity.
9. Refrigerant Dehumidifiers are most efficient... - correct
answer-...in the 70-90 degree temperature range.
10. The most efficient dehumidifier to use with warm
conditions, high humidity, and porous materials is the
refrigerant.
ACTUAL QUESTIONS WITH
VERIFIED ANSWERS.
1. When is closed drying used? - correct answer-When the
outside air is too wet or cold to aide in the drying process.
2. Specifically if the outdoor humidity ration is higher than the
indoor then a closed drying system is used.
3. When using Refrigeration Dehumidification, the temperature
of the affected area must be... - correct answer-...maintained
as close to 80 degrees as possible.
4. All other things being equal, the temperature that will
increase the rate of evaporation the most is? - correct
answer-80 degrees
5. All conventional dehumidifiers and many of the LGRs do not
operate efficiently at... - correct answer-Higher temperatures
above 85 degrees.
, 6. What is the ultimate goal. - correct answer-Having the most
efficient drying is the ultimate goal, as technicians
incorporate the relationship of temperature, humidity, and air
flow.
7. Dehumidification - correct answer-The reduction of water
vapor in the air.
8. According to American Society of Heating, Refrigeration, and
Air Conditioning Engineers (ASHRAE) the most acceptable
indoor humidity range for health and comfort is... - correct
answer-...between 30%-50% humidity.
9. Refrigerant Dehumidifiers are most efficient... - correct
answer-...in the 70-90 degree temperature range.
10. The most efficient dehumidifier to use with warm
conditions, high humidity, and porous materials is the
refrigerant.
