Gas-filled windows offer New York energy savings

Gas-filled windows offer New York energy savings

"My front windows face southwest. I have no shade trees in the front yard, so I'm expecting my front rooms to get hot this summer. I plan to replace the windows but am getting conflicting advice. Should I get low-E (low-emissivity) glass and rely on it to block infrared heat waves, or get clear glass and have an infrared-reflective film applied? Which will give me the best results?" — Angie's List member Roger Linville

"You need a soft coat of low-E glass in combination with argon gas filling in between the glass," says Aaron Rukin, president of highly rated Thermo-Seal Windows & Siding in Rye, N.Y. "The combination of these two will give you total thermal effectiveness."

Sal Silvestri, owner of highly rated RMS Windows & Doors in Mamaroneck, N.Y., says he recommends using a LoE-366, argon gas-filled window, which features a lower Solar Heat Gain Coefficient. The SHGC determines how much heat intrusion is permitted by the window. "I know that it works," he says. "It keeps the room cooler."

Both contractors agree that applying infrared-reflective film to windows in an area with high heat is a bad idea. "Stay away from any films or other materials that are applied to the glass because eventually they will discolor and peel," Rukin says.

Applying film to the inside of the window is one option to slow deterioration, Silvestri says. "It works for a while, but nothing is forever anymore," he says.

Do you have a service-related question? E-mail us at mailbag@angieslist.com.


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