2026 HVAC EXAM QUESTIONS WITH
VERIFIED ANSWERS
What are the 4 modes for heat transfer and example? - CORRECT ANSWER -1) radiation: radiator
2) conduction: heated floor, pot on stove
3) convection: forced air system
4) evaporation: AC running at house and come in from the beach sweating (idk what that means )
What are different types of heating systems? - CORRECT ANSWER -(radiant)
pros: easy to zone, min distribution loss, lack of convected heat loss
cons: no duct work (need for AC system), recovers slowly
pros and cons of the different heating systems? - CORRECT ANSWER -
What is the main difference between furnace and a boiler? - CORRECT ANSWER -furnace heats air
boiler heats water
Why would a hydronic system potentially be more efficient than a forced air distribution system? -
CORRECT ANSWER -
What are the efficiency ratings for different types of heating and cooling systems? - CORRECT ANSWER -
- AC rated by SEER or EER (min SEER is 13: BTU removed out of the air)
- electric resistance heat: COP1 = 3.4 BTU/watt
- heating side of heat pump: HSPF (heating seasonal performance factor) HSPF = 6.8
- combustion appliance: AFUE (annual fuel = 80%-96% min efficiency
What do the ratings for the heating and cooling systems refer? - CORRECT ANSWER -
VERIFIED ANSWERS
What are the 4 modes for heat transfer and example? - CORRECT ANSWER -1) radiation: radiator
2) conduction: heated floor, pot on stove
3) convection: forced air system
4) evaporation: AC running at house and come in from the beach sweating (idk what that means )
What are different types of heating systems? - CORRECT ANSWER -(radiant)
pros: easy to zone, min distribution loss, lack of convected heat loss
cons: no duct work (need for AC system), recovers slowly
pros and cons of the different heating systems? - CORRECT ANSWER -
What is the main difference between furnace and a boiler? - CORRECT ANSWER -furnace heats air
boiler heats water
Why would a hydronic system potentially be more efficient than a forced air distribution system? -
CORRECT ANSWER -
What are the efficiency ratings for different types of heating and cooling systems? - CORRECT ANSWER -
- AC rated by SEER or EER (min SEER is 13: BTU removed out of the air)
- electric resistance heat: COP1 = 3.4 BTU/watt
- heating side of heat pump: HSPF (heating seasonal performance factor) HSPF = 6.8
- combustion appliance: AFUE (annual fuel = 80%-96% min efficiency
What do the ratings for the heating and cooling systems refer? - CORRECT ANSWER -
