Custer is located in IECC Climate Zone 6B (Cold - Dry). Get accurate Manual J load calculations with official design temperatures for Custer.
Climate Zone 6B requires precise load calculations. Upload your Custer blueprint and get a professional Manual J report in 60 seconds— first report is FREE. Pre-loaded with Custer's exact design temperatures (-13°F winter / 91°F summer).
Enter your ZIP code to confirm it's in Custer and get climate zone details.
Official ASHRAE design temperatures for Custer, used for accurate Manual J load calculations.
Minimum insulation and window requirements for Custer per IECC 2021.
Energy Code: 2021 IECC
Upload your Custer blueprint and get a professional Manual J load calculation using official Zone 6B design temperatures. First report is FREE.
Join 10,000+ Custer contractors who trust AutoHVAC