Carrier Geo installed last year. When the low stage heat is on the hum noise is very annoying to me. High stage or cooling it’s very quiet. Had tech here and he looked at a bunch of stuff, particularly how/why/if the noise is being transferred. They say the noise is normal otherwise. Shipping bolts are removed, etc Whem the unit shuts off it seems to me the compressor shakes sorta violently. Been living with it but as heating season is ending I’m thinking about it as I don’t want to listen to it next year. My main question is, standing right beside the unit does it hum loudly? Thanks!