Window replacement signs, such as drafts, condensation and visible damage, indicate the need for new windows. The best materials for window replacement include vinyl, fiberglass and wood, each offering unique durability and energy efficiency benefits. Consider their experience, licenses and insurance coverage when choosing a trustworthy contractor. Read customer reviews and ask for referrals to assess their reputation. Obtain multiple quotes to compare pricing and ensure project scope and cost transparency. Choosing a reliable contractor ensures a smooth window replacement process, enhancing home comfort and increasing energy savings.