It’s well known that a single zone ductless system has extremely high efficiency. I’ve seen advertisements for SEER 20 or SEER 30 systems. My question is what is the SEER rating for a multihead system. Can the larger condenser really cycle down to only output the BTU/hr needed for a smaller room while keeping the higher SEER? How does this then compare to say high velocity AC?
The type of motor control is where the efficiency is gained. Variable frequency drives (VFD) can reduce the speed when needed thus using only the amount of power needed so a multi port compressor can maintain a high efficiency with this type of control.