Las Vegas Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 3B (hot-dry). Las Vegas has one of the most extreme cooling climates in the US: 113°F cooling design, 29°F heating design. Pure sensible load dominates — low humidity means minimal latent load.

Energy Code & Manual J Requirement: Nevada Revised Residential Energy Code (IECC 2024). ACCA Manual J required for all Clark County HVAC permit applications.

Local Electric Utility: NV Energy (Nevada Power)

Building Department: City of Las Vegas Building & Safety Division

Local Trade Association: ACCA Nevada / ASHRAE Nevada Chapter / SMACNA Nevada