2012 IECC Energy Code Technical Support

2012 IECCOn July 1, 2014 Massachusetts adopted the new 2012 IECC Energy Code. Major changes to this new code include,


  • Insulation level upgrades
  • Air Barrier Detailing
  • Mandated Blower door leakage testing
  • Mandated Duct leakage testing
  • Optional Performance based compliance (HERS Ratings)
  • New Ventilation Requirements




Home Energy Raters LLC provides support services to help residential homebuilders navigate energy code details and meet compliance.

Support services include,


Compliance Reports and Documentation

  • Preliminary plan review and energy modeling to make sure the project meets Chapter 4
  • Supply a concise “punch list” of details and changes needed, if any, to meet code.
  • Pre-construction documentation to apply for the building permit.
  • Final documentation and Certificates to document compliance


Onsite Technical Support

  • During key phases of the construction meet with subcontractors to answer questions and provide technical support.
  • Pre-emptive inspections including blower door testing, duct testing, and air sealing checklist compliance

2012 IECC Compliance Strategies


The new 2012 IECC Energy Code includes different options for compliance.


Prescriptive Path Compliance

This option can be the most difficult since it offers little variation or flexibility from the “prescriptive” list of Insulation R-values and Glazing values. In real world building scenarios meeting these details such as R 49 ceilings and R 19 basement walls can be challenging and costly.


Performance Path Compliance.

Home Energy Raters highly recommends following the more realistic approach of the performance path. Using a performance based HERS Rating is the most realistic compliance option that offers documented energy savings while giving the builder more flexibility and “trade offs.”

Contact us to review how a HERS rating can help with your next new home.

Stretch Code

Many Massachusetts communities have elected to adapt the new Stretch Code. The intent of this code change is to provide a more aggressive energy efficient alternative to the 2009 IECC base code. The Stretch Code only applies to specific towns that elected to adapt it.

All new residential buildings constructed within these towns need to meet these new codes as demonstrated by a HERS Score of 70 or less for buildings less than 3000 sq ft, and 65 or less for homes greater than 3000 sq ft.

Contact us for the latest updates