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Master of HVAC: The Ultimate Heating & Cooling Maintenance Quiz
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Why is it harmful to close off more than 20% of a home's register vents?
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Hint
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⚖️
50-50
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Audience
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A
It increases the humidity level of the outdoor unit
B
It causes the thermostat to lose power
C
It restricts airflow, increasing pressure and potentially damaging the compressor or heat exchanger
D
It causes the heating elements to burn out instantly
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