Vinyl windows are made from rigid, impact-resistant polyvinyl chloride (PVC) and have hollow spaces inside that make them resistant to heat loss and condensation. Inexpensive vinyl windows have a tendency to distort when exposed to extremes of heat and cold, making them harder to operate and allowing air leakage. Vinyl windows cannot be painted, and darker shades may fade over time.

Windows have a tremendous environmental influence on a house, affecting the light, ventilation, and temperature of the interior--and the comfort of the occupants. In addition, windows are part of a home's architectural identity, immediately conveying period and style. When you are choosing new windows, make sure the styles you select will suit your home both practically and aesthetically.

Home windows, either fixed or operable, come in many shapes, sizes, and types and are made from a variety of materials. How do you select the right ones?

There are several criteria to consider: your budget, your home's style, and your needs for a given window's performance. Think about the relative importance of ventilation and security; consider what you need in terms of ease of maintenance. And decide whether you want to emphasize the window as an architectural focal point or simply have it serve in a predominantly practical manner.