Polk is located in IECC Climate Zone 4C (Mixed - Marine). Get accurate Manual J load calculations with official design temperatures for Polk.
Climate Zone 4C requires precise load calculations. Upload your Polk blueprint and get a professional Manual J report in 60 seconds— first report is FREE. Pre-loaded with Polk's exact design temperatures (29°F winter / 85°F summer).
Enter your ZIP code to confirm it's in Polk and get climate zone details.
Official ASHRAE design temperatures for Polk, used for accurate Manual J load calculations.
Minimum insulation and window requirements for Polk per IECC 2021.
Energy Code: 2021 IECC
Upload your Polk blueprint and get a professional Manual J load calculation using official Zone 4C design temperatures. First report is FREE.
Join 10,000+ Polk contractors who trust AutoHVAC