Window: Repair within existing frame if value of work is under $1,000, how do I know that the existing frame is kept if a new window is purchased from Home depot?

 To ensure an existing frame is kept, purchase a pocket replacement window (also called an insert window) rather than a full-frame unit, and verify that your The Home Depot contract specifies "pocket installation" or "sash-only replacement". Pocket replacements fit directly inside your sound, existing outer frame, leaving the main exterior and interior frame intact. [1, 2, 3, 4, 5]

How to Verify the Frame is Kept

Review the Product Description: Check your Home Depot quote or order form to confirm you are buying a custom-ordered pocket/insert window and not a new nail-fin or full-frame construction window. [1, 2, 3]
Confirm the Scope of Work: During your The Home Depot in-home measurement and consultation, explicitly tell the technician or installer that you want a pocket install keeping the structural perimeter frame. [1]
Inspect the Installation Plan: A pocket replacement removes only the sashes, tracks, and springs (the "guts") while the original wooden or vinyl jambs and sill stay securely in the wall. [1, 2, 3, 4]