Prepare for the HVAC 403A Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

Which statement accurately describes boilers and chillers and their typical applications?

Boilers and chillers cover heating and cooling ends of HVAC. A boiler heats water, producing hot water or steam that circulates to heat spaces or provide process heat. A chiller removes heat by circulating a cooled liquid (water or glycol) through the system to absorb heat from a space or process; the absorbed heat is then rejected at a condenser. Because of their roles, boilers are used for heating, while chillers are used for cooling. That description matches typical applications: heating with boilers and cooling with chillers. The other options aren’t accurate because chillers don’t cool air directly (they chill a liquid that then cools air via coils), boilers don’t generate electricity as their primary purpose, chillers don’t produce steam, and heating isn’t accomplished by directly heating air with the equipment itself.

Boilers and chillers cover heating and cooling ends of HVAC. A boiler heats water, producing hot water or steam that circulates to heat spaces or provide process heat. A chiller removes heat by circulating a cooled liquid (water or glycol) through the system to absorb heat from a space or process; the absorbed heat is then rejected at a condenser. Because of their roles, boilers are used for heating, while chillers are used for cooling.

That description matches typical applications: heating with boilers and cooling with chillers. The other options aren’t accurate because chillers don’t cool air directly (they chill a liquid that then cools air via coils), boilers don’t generate electricity as their primary purpose, chillers don’t produce steam, and heating isn’t accomplished by directly heating air with the equipment itself.