Windows that reflect infrared only when it’s hot?
I’m considering buying a home that faces south. The second floor windows get flooded with light for most of the daylight hours. The windows are single-paned, and if this house becomes mine, replacing them will be at the top of my list.
I’ve read about low-e glazing and how it reflects outdoor infrared while keeping heat inside. But what about in the winter, when I want the sunlight coming in to warm the house? Some considerations:
– The sun’s increased summertime angle will not significantly lessen the exposure.
– The house is landmarked, and exterior window treatments are not permitted.
– NYC is noisy, so sound insulation is a factor as well.
I’d love a flexible window solution that allows me to take advantage of the sun when I want it, and banishes it when I don’t. Does such a thing exist? Or should I get over it and just be satisfied with windows that effectively keep the boiler-produced heat inside during the winter?