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Benefits of Argon Gas Windows
Argon is the gas most often used between panes in a double- or triple-glazed window. The gas is colorless and odorless, says Bill Lingnell, head of Lingnell Consulting Services in Rockwall, Texas, an independent consultant who works with the Insulating Glass Manufacturers Alliance (IGMA). Argon is denser than the atmosphere, providing more thermal efficiency than having air between the panes, he explains.
Other Types of Gases
Krypton gas is denser than argon, and xenon gas is denser than krypton, providing somewhat more thermal efficiency. Some manufacturers also may offer a mixture of two gases. But the incremental benefit of these higher densities doesn’t necessarily justify their prices, says Carroll Bogard, manager of Trade Segment Marketing for Pella Windows in Pella, Iowa. “Dollar for dollar, argon gas does the best job,” he says.
What Do Filled Windows Offer?
Added energy efficiency is the key benefit to having gas-filled windows, Bogard says. The gas acts as an insulator, working in both summer and winter to keep interiors protected from outside temperatures. Typically, gas infusion is provided in conjunction with applying a low-emissivity (low-E) coating film to the glass panes, he notes.
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