When I was shopping for a mini split recently all the models I could find seemed to be variable speed compressor and blowers, unless I was reading something wro

When I was shopping for a mini split recently all the models I could find seemed to be variable speed compressor and blowers, unless I was reading something wrong. So maybe this isn't an issue anymore? I oversized mine but wish I went even bigger after a cold snap we just had in the pnw this last winter.