Energy Codes

Information on and links to Residential Energy Code applications.

Please see information below regarding the two EC-1 forms available for use.

Residential Energy Code Certification Applications

The 2018 IECC is part of the NH State Building Code adopted by the NH Legislature on July 1, 2022, via House Bill 1681. HB1681 gives builders and homeowners the option to use the previous building code (2015 IECC, effective September 15, 2019) until January 1st, 2023.

A Letter to Municipal Officials: Revisions to the Energy Code Resulting from HB1472 (2018)

Code amendments can be viewed at the New Hampshire Building Code Review Board.

Codebooks may be purchased from the International Code Council.

Energy Code training workshops are periodically scheduled in New Hampshire. Visit https://nhsaves.com/events/ to see if there are any upcoming workshops.


If the municipality is included on the list below, please continue to submit the EC-1 form to the Department of Energy for approval. For all municipalities which are not on this list, please contact your local building or code enforcement official and do not submit an EC-1 form to the Department of Energy.

EC-1 Forms should be submitted via email to EnergyCodes@energy.nh.gov or faxed to (603) 271-1526.

  • Acworth
  • Alexandria
  • Alstead
  • Andover
  • Bartlett
  • Bath
  • Benton
  • Bridgewater
  • Bristol
  • Campton
  • Canterbury
  • Center Harbor
  • Charleston
  • Chatham
  • Clarksville
  • Colebrook
  • Columbia
  • Cornish
  • Croydon
  • Dalton
  • Danbury
  • Dorchester
  • Dummer
  • Easton
  • Eaton
  • Effiingham
  • Ellsworth
  • Errol
  • Fitzwilliam
  • Franconia
  • Gilsum
  • Goshen
  • Grafton
  • Groton
  • Harts Location
  • Haverhill
  • Hebron
  • Henniker
  • Hill
  • Holderness
  • Jefferson
  • Lancaster
  • Landaff
  • Langdon
  • Lempster
  • Lincoln
  • Littleton
  • Lyman
  • Lyme
  • Marlborough
  • Mason
  • Milan
  • Monroe
  • Nelson
  • New Castle
  • New Hampton
  • New London
  • Northumberland
  • Orange
  • Orford
  • Piermont
  • Pittsburg
  • Randolph
  • Richmond
  • Rollinsford
  • Roxbury
  • Rumney
  • Sanbornton
  • Sandwich
  • Sharon
  • Shelburne
  • South Hampton
  • Springfield
  • Stark
  • Stewartstown
  • Stoddard
  • Stratford
  • Sugar Hill
  • Sullivan
  • Sunapee
  • Surry
  • Tamworth
  • Temple
  • Thornton
  • Troy
  • Unity
  • Walpole
  • Warren
  • Washington
  • Waterville Valley
  • Webster
  • Wentworth
  • Westmoreland
  • Whitefield
  • Wilmot
  • Windsor
  • Woodstock

Contact Information

Please send any comments or questions you may have to:

New Hampshire Department of Energy
21 S. Fruit St, Suite 10
Concord, NH 03301-2429
Phone: (603) 271-3670
Fax: 603-271-1526
EnergyCodes@energy.nh.gov