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All true, but this requires equipment to have 3-phase motors and most residential A/Cs have single phase motors. You could swap the condensor fan easily, but the compressor is still single phase. Newer, high SEER, A/Cs are already inverter driven. (Which is great)

18-20 kW inrush would be consistent with an older 3.5 - 4 ton A/C unit. Locked Rotor Amps (LRA) on startup would be around 80 amps and running wattage would be 4 kW-4.5 kW. That would be equivilent to a 4hp air compressor. To put this in perspective, here is a video of a 10 kW, MEP-803a...

Do you really need 20kW for a house? Are you all electric? A 10 kW unit will run most houses with A/C. For those with high efficiency A/C's, like me, you can run the whole house on a 5 kW unit. You can't just say "I want the big one to run everything" because all mil sets are diesel and you...