ESCO Air Conditioning Practice Exam

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What is an energy recovery ventilator?

  1. An air to air heat exchanger to recover heat

  2. A compressor for energy efficiency

  3. A device to add moisture to the air

  4. A system to control air pressure

The correct answer is: An air to air heat exchanger to recover heat

An energy recovery ventilator is a device used in HVAC systems to recover heat from the outgoing air and transfer it to the incoming air. This process helps to reduce the energy required to heat or cool the air, therefore improving energy efficiency. By recovering heat from the exhaust air, the system can pre-condition the incoming fresh air, reducing the workload on the heating and cooling systems. This makes option A the correct answer.

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