The 3 things I learned when I had my foundation repaired that shocked me: slab movement can pinch ducts
https://www.livebinders.com/b/3723668?tabid=43636e5b-52e6-9835-4bfe-d30962a3ae57
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.