Burlington Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 6A (cold-humid). Burlington's Lake Champlain location produces very cold winters (-6°F heating design) and warm summers (86°F/72°F cooling design). Vermont is a leader in cold-climate heat pump adoption.

Energy Code & Manual J Requirement: Vermont Residential Building Energy Standards (RBES) — based on IECC 2021 with Vermont amendments. Strong heat pump requirements. ACCA Manual J required for all Chittenden County HVAC permit applications.

Local Electric Utility: Green Mountain Power / Burlington Electric Department (BED)

Building Department: City of Burlington Department of Planning & Zoning

Local Trade Association: PHCC Vermont / ASHRAE New England Chapter