Replacement Windows squeeze in air between two panes of glass, providing a layer between the inside of you home and the weather outside. Thus, replacement windows insulate your home from extremes of both hot and cold, and at the same time reduce your home’s energy costs and change your homes décor. Replacement windows come in many shapes, sizes and styles to match your home. There are different types of replacement windows: Replacement windows add Light & Style to your home. Skylights brighten your room & add design. Sliding Doors are a form of replacement windows. Before you buy replacement windows you need to decide how you want them to open. Some choices for you to look at include: Casement Windows with vertical hinges that swing in or out by winding a handle. Double or Single hung made of two cases that slide up & down. Sliding Windows that move horizontally Plain fixed Windows that don't open at all. You need to make sure that your replacements windows will match with the architecture of your home. Vinyl Windows are a popular & economical alternative to aluminum, wood and fiberglass because they are energy efficient, easy to install and effortless to maintain. They are made from a plastic called polyvinyl chloride or PVC and they provide a superb degree of insulation. They require practically no maintenance because their durable surfaces are already stained, finished and sealed. The exterior casing of vinyl windows doesn’t fade or wear under ultraviolet sunlight making them more durable then aluminum or wood. For Energy Efficiency you can go in for Triple-Pane Windows that have three pieces of glass with layers of air between them. Air absorbs heat and cold much better than glass. You can reduce your heating costs further if you replace the air with a gas called Argon. While shopping for replacement windows, visit some showrooms to make sure that the window is User Friendly. Try it to see if it opens & closes with ease. Also look for certification information to compare the energy efficiency of each name brand and style of window. Make sure to see the actual warranty before making your purchase and understand all of the details. Replacement windows are a large investment so it is important to make an informed decision based on the needs of your home, the kind of windows being replaced and your budget.