Manchester Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 6A (cold-humid). Manchester's southern New Hampshire location produces cold winters (2°F heating design), modest but humid summers (88°F/71°F cooling design), and genuine four-season HVAC demands.

Energy Code & Manual J Requirement: New Hampshire State Building Code (IECC 2018). ACCA Manual J required for Hillsborough County HVAC permits.

Local Electric Utility: Eversource Energy (Public Service of NH)

Building Department: City of Manchester Building Department

Local Trade Association: PHCC New Hampshire / ASHRAE New England Chapter