29) Which refrigerant is a hydrochlorofluorocarbon (HCFC)? A) R-12 B) R-134a C) R-22 D) R-410A 30) What is the purpose of the ductwork in a central air conditioning system? A) To circulate the air B) To compress the refrigerant C) To control the temperature D) To filter the air 31) What is the primary function of the air handler in a split system air conditioner? A) To cool the air B) To circulate the refrigerant C) To control the temperature D) To compress the refrigerant 32) Which refrigerant phase change occurs in the condenser coil? A) Evaporation B) Sublimation C) Fusion D) Condensation 33) What is the purpose of the evaporator fan in an air conditioning system? A) To cool the refrigerant B) To circulate the air C) To compress the refrigerant D) To control the temperature 34) What is the main advantage of a ductless mini-split system? A) Energy efficiency B) Easy installation C) Zoned cooling D) Lower cost 35) Which component of an air conditioner releases heat to the outside environment? A) Evaporator coil B) Condenser coil C) Compressor D) Expansion valve 36) What does the term "COP" stand for? A) Coefficient of Pressure B) Coefficient of