The 3 things I learned when I had my foundation repaired that shocked me: slab movement can pinch ducts
https://blogfreely.net/gierreibkv/residential-foundation-repair-checklist-3-things-to-know-before-you-call
The 3 things I learned when I had my foundation repaired that shocked me: slab movement can pinch ducts, HVAC balancing after lift is smart, and filter dust loads spike.