Vinyl has undergone improvements since it was first introduced to the window-buying market in the 1970s. Vinyl holds up against corrosion, prevents the transfer of warm air, is weatherproof, and doesn't rot. Vinyl windows are constructed with layers of insulation in the frames, so when they're installed professionally, they form a water-tight seal. Vinyl is an excellent material for energy-efficient windows.

Aluminum is likely to lose heat, which means these frames don't offer as much efficiency on energy.

Wood window frames were the first pick for years, and although they still continue to be a great option for many people, wood demands more maintenance because they are susceptible to rot in wetter climates. Once wood windows have rot or wear, they leak air and moisture from a broken seal, causing more damage. Wood-clad styles don't have many temperature-transfer issues because they're constructed with a timber interior and a vinyl or aluminum exterior that provides durability.

Glass is another component that adds to the energy efficient attributes of windows. Double-pane window styles filled with argon gas and coated with Low-E are potentially the most efficient. They also provide the most value and protect the inside of your home from the heat of the sun and UV rays in the summer while offering insulation that stops warm air loss when the temperatures drop outside.