Vinyl has come a long way since it was first introduced to the window-buying market in the 70s. Vinyl is non-corrosive, prevents the loss of warm air, is weatherproof, and doesn't experience rot. Vinyl windows are manufactured with layers of insulation in the frames, so when they're installed professionally, they form a water-tight seal. They are a sound option as energy-saving windows.

Aluminum is prone to heat transfer, which means these frames aren't exactly the best-insulating windows.

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 sustained rot or wear, they leak air and moisture, causing more damage. Wood-clad styles don't have many heat-loss issues because they're built with a timber interior and a vinyl or aluminum exterior that offers long-lasting durability.

Glass is another component that adds to the energy efficient benefits of your window frames. Double-pane windows with a Low-E coating and filled with argon gas are potentially the most efficient. They also provide the most value and care for the interior of your home from the sun's heat and UV rays in the summer while providing insulation that prevents warm air transfer when the temperatures drop outside.