Question: How do variable refrigerant flow (VRF) systems modulate the volume of refrigerant that is pumped through the system? 1. A Using variable speed compressors 2.

How do variable refrigerant flow (VRF) systems modulate the volume of refrigerant that is pumped through the system?

1. A Using variable speed compressors

2. B Changing the speed of the compressor

3. C All of these options

4. D Using inverter-driven compressors

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