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Heating, Ventilation, and Air Conditioning Essentials Quiz
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What is the function of a crankcase heater in an outdoor HVAC unit?
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50-50
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Audience
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A
To heat the indoor air during winter
B
To prevent refrigerant from mixing with compressor oil when the unit is off
C
To speed up the fan motor
D
To melt ice on the condenser coils
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