New Hampshire: International Energy Conservation Code (commercial), lead only

Tracker reading

How it was checked

Lead only

A tracker lists this edition. Nobody has checked it against the state’s own record yet.

What the trackers say

Code adoption trackers are a cross-check. They are not New Hampshire’s own record.

• DOE’s energycodes.govCross-check

  2018 IECC, effective Jan 1, 2023

  Current State Code: 2018 IECC and ASHRAE 90.1-2016; State Amendments: Yes; Equivalent Code: 90.1-2013; Effective Date: 01/01/2023; Enforcement: Mandatory Statewide

  energycodes.gov (opens in a new tab)Read Oct 17, 2026

Related pages

• See New Hampshire’s IECC commercial on the map
• IECC commercial adoption in every state
• All six codes in New Hampshire

Other codes in New Hampshire

• NEC2023 NECLead only
• IBC2021 IBCLead only
• IRC2021 IRCLead only
• IFC2021 IFCLead only
• IECC residential2018 IECCLead only