Full-frame replaces the entire window unit including frame (better for damaged frames), while pocket installation inserts new windows into existing frames (faster/cheaper but less thorough).

A single window takes 1–2 hours; a full-house replacement may take 1–3 days, depending on the number of windows.

Costs vary by material and size ($300–$1,000 per window), with labor adding $100–$300 per window. Get multiple quotes for accuracy.