Most People Fail This HVAC Quiz — Can You Pass?
What does the “RETURN AIR” label on a vent indicate?
55%
Correct!
Incorrect!
Return air vents pull indoor air back for conditioning. Blocking them reduces airflow efficiency.
What does the “RETURN AIR” label on a vent indicate?
Air is filtered here
Air flows out of system
Air flows back to system
Air is heated here
55%
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