People use casement windows for several reasons: 1.Energy efficiency: Casement windows are known for their energy efficiency because of the way they seal tightly against the frame when closed. This makes them an excellent choice for reducing energy bills by keeping hot or cold air from escaping. 2. Ventilation: Casement windows provide excellent ventilation because they can be fully opened, allowing fresh air to flow into the room. This makes them an ideal choice for areas that need more airflow, such as kitchens, bathrooms, and laundry rooms. 3. Security: Casement windows are difficult to break into because of their design. The window sash is held in place by a crank, making it difficult for intruders to force the window open. 4. Aesthetics: Casement windows are often used in traditional or modern-style homes because of their sleek and simple design. They can also be customized with various frame materials, such as wood, aluminum, or vinyl, to match the style of the home. 5.Easy operation: Casement windows are easy to operate, with a simple crank mechanism that opens and closes the window. This makes them a great choice for people who have difficulty with traditional sliding or double-hung windows.