@loke Honestly this all goes back to how the systems start.
If you've never noticed an air conditioner come to life with a bang, then they probably have some sort of soft-starter or a variable-speed compressor.
Those are very, very rare here.
Another factor is that three-phase service in the home is unheard of, so every large compressor needs a start capacitor. That may increase apparent drop upon startup.
Apr 25, 2023, 2:50 PM@TechConnectify the ones I have in the house is the Misubishi MSY-GE18VA. I don't know if it has a variable speed compressor.
@loke Almost certainly.
Basically, if you've never noticed it go KA-CHONGGGGGGG, then it does. And given that it's a Mitsubishi, it's very unlikely to be single-speed.
My cheap Pioneer mini-split doesn't cause the lights to dim because it slowly ramps up in speed. It never goes from being silent to loud in an instant like my cheap Lennox central unit does. But mini-splits (and vari-speed units) remain exotic here in the States.