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2026 HVAC EXAM QUESTIONS WITH VERIFIED ANSWERS

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2026 HVAC EXAM QUESTIONS WITH VERIFIED ANSWERS

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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 -

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