IICRC WRT Exam
1. All conventional dehumidifiers and many of the LGRs do not operateefficiently at...:
Higher temperatures above 85 degrees.
2. What is the ultimate goal.: Having the most efficient drying is the ultimate goal,as
technicians incorporate the relationship of temperature, humidity, and air flow.
3. Dehumidification: The reduction of water vapor in the air.
4. According to American Society of Heating, Refrigeration, and Air Conditioning
Engineers (ASHRAE) the most acceptable indoor humidity range for health and comfort is...:
...between 30%-50% humidity.
5. Refrigerant Dehumidifiers are most efficient in the 70-90 degree temper-
ature range.
The most efficient dehumidifier to use with warm conditions, high humidity, andporous
materials is the refrigerant.
6. Refrigerant dehumidifiers are not suited for...: ...professional drying as theyare unable to
operate efficiently at 70 degrees and below.
7. CFM: cubic feet per minute
8. AHAM: Association of Home Appliance Manufacturers
9. What does AHAM do?: Rates dehumidifier capacity by measuring water re- moval
expressed in pints at 80degrees F and at a Relative Humidity of 60% per 24hours.
10. Conventional Dehumidifier: A term given to a dehumidifier that do not have theability to
continue to remove water from the air as the air becomes drier.
11. Conventional/LGR Dehumidifiers operate and revive water via...: CONDEN-SATION as
the warm air is drawn across cold coils and condenses.
12. When deploying the IICRC formula it often...: ...surprises many technicianshow many
conversational units are actually required for the initial start up drying process.
Most are realizing that they are falling far short by guessing or hoping the have adequate start-
up dehumidification.
13. What is the benefit of a Low Grain Refrigerant (LGR)?: A low grain refrigerant dehumidifier
continues to remove significant water vapor below that of a convention-al.
14. Technicians must lower RH below...: 70% within the first 24 hours.
15. The potential for damage to hygroscopic materials is greatest when...: -
...relative humidity is above 70%
16. Moisture levels of % will support destructive wood (rot)
decayingfungi to grow on wood surfaces.: 20%
1. All conventional dehumidifiers and many of the LGRs do not operateefficiently at...:
Higher temperatures above 85 degrees.
2. What is the ultimate goal.: Having the most efficient drying is the ultimate goal,as
technicians incorporate the relationship of temperature, humidity, and air flow.
3. Dehumidification: The reduction of water vapor in the air.
4. According to American Society of Heating, Refrigeration, and Air Conditioning
Engineers (ASHRAE) the most acceptable indoor humidity range for health and comfort is...:
...between 30%-50% humidity.
5. Refrigerant Dehumidifiers are most efficient in the 70-90 degree temper-
ature range.
The most efficient dehumidifier to use with warm conditions, high humidity, andporous
materials is the refrigerant.
6. Refrigerant dehumidifiers are not suited for...: ...professional drying as theyare unable to
operate efficiently at 70 degrees and below.
7. CFM: cubic feet per minute
8. AHAM: Association of Home Appliance Manufacturers
9. What does AHAM do?: Rates dehumidifier capacity by measuring water re- moval
expressed in pints at 80degrees F and at a Relative Humidity of 60% per 24hours.
10. Conventional Dehumidifier: A term given to a dehumidifier that do not have theability to
continue to remove water from the air as the air becomes drier.
11. Conventional/LGR Dehumidifiers operate and revive water via...: CONDEN-SATION as
the warm air is drawn across cold coils and condenses.
12. When deploying the IICRC formula it often...: ...surprises many technicianshow many
conversational units are actually required for the initial start up drying process.
Most are realizing that they are falling far short by guessing or hoping the have adequate start-
up dehumidification.
13. What is the benefit of a Low Grain Refrigerant (LGR)?: A low grain refrigerant dehumidifier
continues to remove significant water vapor below that of a convention-al.
14. Technicians must lower RH below...: 70% within the first 24 hours.
15. The potential for damage to hygroscopic materials is greatest when...: -
...relative humidity is above 70%
16. Moisture levels of % will support destructive wood (rot)
decayingfungi to grow on wood surfaces.: 20%
