Question 1: How does the coefficient of performance (COP) relate to the energy efficiency of heat pumps in HVAC systems?
Which action should you take?
Question 2: If the compressor of an HVAC system is not starting, which of the following should be checked first?
Which action should you take?
Question 3: A system is not cooling properly despite normal refrigerant levels. What could be the issue?
Which action should you take?
Question 4: How can an HVAC technician determine if a thermostat is malfunctioning?
Which action should you take?
Question 5: What is the most common cause of short cycling in an HVAC system during repair or installation?
Which action should you take?
Question 6: What is the purpose of the U.S. Department of Energy (DOE) energy efficiency standards for HVAC systems?
Which action should you take?