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2010 Oregon Energy Efficiency Specialty Code OEESC

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The 2010 Oregon Energy Efficiency Specialty Code (OEESC) is the first code cycle with a stand-alone commercial energy code. The energy provisions were previously found in Chapter 13 of the structural code. The OEESC is based on the 2009 International Energy Efficiency Code (IECC), with Oregon amendments as designated in the document.

Program Facts
Codebook Assistant
What do you need to do to Comply?
Program Activities
Helpful Tools

Program News & Updates
Rulemaking Hearing - Certification Rules
Important Code Change Update
Review of the 2014 OEESC
Newly Adopted Rules (within the last 90 days)
Permanent Rule - Scope of Code
Program Facts

Current commercial codebook:

2010 Oregon Energy Efficiency Specialty Code (OEESC) (Free - read-only)

Oregon's energy commercial energy code, the 2010 OEESC, is now a stand-alone code. The 2010 OEESC takes the place of Chapter 13 in the Oregon Structural Specialty Code (OSSC).

Effective date: July 1, 2010

Included a phase-in period, from July 1, 2010 to September 30, 2010, during which time building officials could allow the use of either the 2010 OEESC or Chapter 13 in the 2007 Oregon Structural Specialty Code (OSSC).

Current residential codebook:
2011 Oregon Residential Specialty Code (ORSC), Chapter 11 (Free - read-only)

Effective date: July 1, 2011

2011 ORSC Energy Code Help Guides: Guides for compliance with Chapter 11 of the ORSC.

What code is applicable for Residential projects?
- Use the following table to determine where to find the applicable code for your residential project.

Building Type/Occupancy

Building Code

Energy Provisions

1 & 2 Family, Townhomes

2011 ORSC

ORSC Ch. 11

R-2, R-4 (3-stories and less)

2010 OSSC


SR-1, SR-2 (I-Occupancy)

2010 OSSC


SR-3, SR-4

2011 ORSC

ORSC Ch. 11

R-2 (Under Appendix N)

OSSC Appendix N

ORSC Ch. 11


2010 OSSC


R-2, R-4 (4-stories and more)

2010 OSSC


Technical Staff Contact:
Mark Heizer

Codebook Assistant

Mid-Cycle Amendments to the 2010 Oregon Energy Efficiency Specialty Code (Effective Jan. 1, 2012): Section 503.2.4.5 Shut-Off Dampers

Errata for the 2010 OEESC


  Request form
PDF | Word

Where to purchase codebooks

Statewide Alternate Methods (SAMs)
Statewide Alternate Methods

View codebooks online (Free - read only)
2010 Oregon Energy Efficiency Specialty Code (OEESC) - Effective July 1, 2010

What do you need to do to Comply?

OEESC Compliance COMcheck

The COMcheck software/program, using the Oregon code selection, is used to demonstrate compliance with the 2010 OEESC. The forms generated by the software can be submitted for demonstration of compliance for both the Prescriptive and Simplified Trade-Off paths. Under the WBA path, Simplified Trade-off forms should be included to demonstrate the differences between the design building and a compliant building. Forms may be submitted electronically (verify with your jurisdiction).

3 ways to demonstrate compliance with 2010 OEESC:

  1. Prescriptive Path
    Complete and submit COMcheck forms to local jurisdiction
  2. Simplified Trade-Off
    Complete and submit COMcheck forms to local jurisdiction
  3. Whole Building Approach (WBA)
    Instruction on using Whole building approach (WBA) to demonstrate compliance with 2010 OEESC

Beginning Instructions for COMcheck. See the Additional Resources links below for complete instructions and help:

  • Download latest version of COMcheck at energycodes.gov. Select operating system, either Windows, Mac, or Linux
  • Select a "New Project" or open a saved file
  • Select "Oregon" from the Code pull-down menu (under the State Codes section)
  • Select your Project Type (new construction, addition or alteration)
  • Use the Project Details Notes as needed to clarify project details (non-typical conditions, separate application for Envelope, Lighting or Mechanical)

COMcheck is available for use in online format at COMcheck*Web.

Questions and Assistance
Contact: Mark Campion at Mark.Campion@state.or.us or by calling 503-378-4530

Additional Resources (Not Oregon-specific)

  • COMcheck Basics - Additional Video Training
  • COMcheck Software Support Guide
  • Resource Guide for Code Officials
    This site has general information regarding what submissions should look like, what to look for on plans. This site is for basic COMcheck (not Oregon-specific; Note that Residential/REScheck information does not apply). A good resource on Chapter 5 for designers and code officials. Note: a direct link to the Resource Guide is not furnished here, as it is a large file size PDF. The above link points to the page where the large size PDF is available for download.
  • Ductwork Insulation Guide
    Figure 1 (page 2) provides guidance for what ducts receive insulation or not and whether the duct is in unconditioned space (R-5: Items 3, 5, 6, 13, 14; items 9, 10, 11 if not meeting Section 503.2.7, Exception 2) or exterior to the building (R-8: Item 4).
Program Activities

Construction Industry Energy Board

Helpful Tools

Code Adoption Process

Residential Thermal Performance Calculator: Microsoft Excel 2010 is required to use the 2011 ORSC Thermal Performance calculator. Save the document to your computer, keeping the .xlsx extension. This document will only function properly in Excel 2010 or later.

Related Programs
2011 Oregon Reach Code
Commercial Structures
Green Building

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