The 3 things I learned when I had my foundation repaired that shocked me: slab movement can pinch ducts

https://www.mediafire.com/file/0ywf3vrb04hukl0/pdf-66775-79169.pdf/file

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.