To be honest, I don't know. It has 12kw on the outside. It's a DC inverter ducted system. I had to get the wiring to the house upgraded with 3 phase when it wa

To be honest, I don't know. It has 12kw on the outside. It's a DC inverter ducted system. I had to get the wiring to the house upgraded with 3 phase when it was put in. It doesn't use 3 phase but one of the phases is dedicated to the aircon. My electricity bill in summer is 20% higher.