Williamson is located in IECC Climate Zone 5A (Cool - Humid). Get accurate Manual J load calculations with official design temperatures for Williamson.
Climate Zone 5A requires precise load calculations. Upload your Williamson blueprint and get a professional Manual J report in 60 seconds— first report is FREE. Pre-loaded with Williamson's exact design temperatures (0°F winter / 91°F summer).
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Official ASHRAE design temperatures for Williamson, used for accurate Manual J load calculations.
Minimum insulation and window requirements for Williamson per IECC 2021.
Energy Code: 2021 IECC
Upload your Williamson blueprint and get a professional Manual J load calculation using official Zone 5A design temperatures. First report is FREE.
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