Thank you Kodiak!
I was planning to add rockwool safe and sound around all the HVAC areas to try and help absorb some of the sound from/to the HVAC runs, am not sure how well it work, I have heard of some people using a heavier type of stick on sound deadening material, similar to how people will add dynamat to car frame/doors or slipping on HVAC duct liners.
I have not fully determined what I will do yet, but am considering all reasonable options.
Rockwool safe and sound:
https://www.homedepot.ca/product/rockwool-safe-n-sound-16-inch-o-c-for-2x4-wood-studs/1000421954Stick on sound deadening:
https://www.amazon.ca/dp/B07XMF3KK5...d_r=9b0b2407-d4dd-4436-9885-18cd7dd35c2eHVAC duct liners:
https://www.homedepot.ca/product/du...eve-4-inch-x10-foot/1000155662?rrec=true