Most builders still use the prescriptive path for energy code compliance, but a growing number are switching to the performance path and seeing savings.

Most builders use the prescriptive path to comply with energy requirements since it seems easier to use particular parts as specified in the regulations. But builders who choose the performance path can calculate the whole building energy efficiency to comply with regulations, freeing them up to choose different components. Many who make the change find that they can save money with the performance path.

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