NREL Researchers Developing Enhanced Methods for Evaluating Window Energy Performance Lifespan
New windows are a significant investment, but unlike some home improvement projects, they come with an incentive: increased efficiency and cost savings over time thanks to reductions in energy bills.
Energy savings and carbon emission reductions promised by energy efficiency technologies such as advanced windows are only delivered if these new products maintain long-term high performance. Some of the most important questions for consumers making such a purchase are: How long will the associated energy savings last, and do they change over time? For manufacturers, being able to demonstrate potential for long-term performance is a significant differentiator for their product in the marketplace.
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