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The 2009 International Energy Conservation Code Overview. Village of Frankfort, Illinois April 21, 2010. Presented By:. Don Plass, C.B.O., M.C.P., LEED AP Director of Code Enforcement Village of Hoffman Estates. Introduction and Overview. Codes

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the 2009 international energy conservation code overview

The 2009 International Energy Conservation Code Overview

Village of Frankfort, Illinois

April 21, 2010

presented by
Presented By:

Don Plass, C.B.O., M.C.P., LEED AP

Director of Code Enforcement

Village of Hoffman Estates

introduction and overview
Introduction and Overview
  • Codes
  • History of Illinois Energy Efficiency Building Act
  • Residential Applications of the 2009 IECC
  • RESCheck/REM Rate
  • Building Code – A set of rules of procedures

designed to secure uniformity and protect the public interest in such matters as building constriction and public health, established by a public agency and commonly having the force of law in a particular jurisdiction

earliest recorded building code
Earliest Recorded Building Code
  • The Code of Hammurabi 1780 BC
  • The earliest recorded “Building Code” comes from an 8 foot stone slab recovered in the Persian Mountains in 1901. It is preserved today in the Louvre, Paris
  • The Code was written by the ruler of Babylon:

King Hammurabi

  • The Code contained 282 laws, of

which 5 referred to construction

hammurabi code numbers 229 233
Hammurabi Code Numbers 229-233
  • 229-If a builder build a house for someone and does not construct it properly, and the house for which he built fall in and kills the owner, the builder shall be put to death.
  • 230-If it kill the son of the owner, the son of the builder shall be put to death.

233-If a builder builds a house for someone, even though he has not completed it, if then the walls seem toppling, the builder must make the walls solid from his own means

present day codes
Present day codes:
  • Building Officials and Code Administrators (BOCA) was published in 1915 (Midwest)
  • Uniform Building Code (UBC) was published in 1927 (West of Mississippi)
  • Southern Building Code Congress (SBCC) was published in 1940 (South East) “Standard Building Code"
  • These are commercial codes
  • In 1972, the Council of American Building Officials (CABO) was incorporated with the combination of the three model commercial code groups: BOCA, UBC and SBCC.
  • CABO is a prescriptive code for residential one and two family dwelling units.
model energy code evolution
Model Energy Code-Evolution
  • In 1973 the first Model Energy Code (MEC) was published by CABO
  • In 1998 the International Energy Conservation Code was published by the three model code groups who were merging into the International Code Council (ICC)
  • In 2000 the first International Energy Conservation Code (IECC) was published by ICC
2000 international energy conservation code iecc
2000 International Energy Conservation Code (IECC)
  • The first published International Code Council (ICC) Energy Code
  • 19 Climate Zones (CZ)
  • 198 pages in length
2006 iecc
2006 IECC
  • Reduced number of Climate Zones to 8 Zones
  • Reduced to 63 pages
2009 iecc
2009 IECC
  • Applies to Residential Buildings
    • One and Two Family dwellings, Townhouses
    • Multifamily dwellings three-stories or less in height
  • Commercial Buildings
    • Multifamily dwellings four stories or greater in height
  • Eight global climate zones
  • Compliance assessment choices
    • Prescriptive criteria-for ease of enforcement
    • Simulated Performance criteria-for design flexibility
2009 iecc14
2009 IECC
  • Changes in Residential Requirements
    • Stringency-some key differences
    • New requirements
      • Building envelope tightness
      • Duct testing
      • Lighting equipment
      • Pool controls and covers
      • Snow melt controls
    • Moisture control requirements moved to IRC
    • No mechanical trade-offs allowed
envelope stringency changes 2009 iecc
Envelope Stringency Changes-2009 IECC
  • Fenestration U—Factor, Climate Zone 4 is lowered from 0.4 to 0.35
  • Wood frame wall U-Factor, CZ5-CZ6 lowered from 0.060 to 0.057
    • `Minimum R-Value for “batt – only” raised from 19 to 20
  • Basement wall U-Factor, CZ6-CZ7 lowered from 0.059 to 0.050
    • Minimum R-Value raised from 10/13 to 15/19
building envelope tightness 2009 iecc
Building Envelope Tightness – 2009 IECC
  • Mandatory air leakage section for building thermal envelope (402.4.1) has been revised to include attic openings and rim joist junctions
  • New air sealing and insulation section (402.4.2) added with testing and visual inspections options
duct testing 2009 iecc
Duct Testing – 2009 IECC
  • New Duct Testing requirements are in Section 403.2.2 for either a post construction or rough-in test, unless ducts and air handler are located within the conditioned space
lighting equipment 2009 iecc
Lighting Equipment – 2009 IECC
  • A new requirement in Section 404 that

50 % of lamps in permanently installed

lighting fixtures shall be high-efficacy


pool controls and covers 2009 iecc
Pool Controls and Covers – 2009 IECC
  • A new Section 403.9

in pools requires a readily

accessible on/off switch,

time switches for heaters

and pumps along with

pool covers

snow melt controls 2009 iecc
Snow Melt Controls – 2009 IECC
  • A new Section 403.8 has been added for snow melt controls
moisture control requirements to irc
Moisture Control Requirements to IRC
  • Moisture control requirements (Vapor Barriers) have been moved to the 2009 International Residential Code
no mechanical tradeoffs allowed
No Mechanical Tradeoffs Allowed
  • Table 405.5.2(1) sets

the standard for heating

and cooling systems to

be “as proposed”

This removes justification

for the justification for

the mechanical systems trade off used in REScheck

irc not equal to iecc
IRC not equal to IECC
  • Energy Chapter in IRC is not equal to the IECC
    • DOE does not recognize the IRC for energy
    • IRS does not recognize the IRC for tax credits
    • FHA does not recognize the IRC
    • Illinois does not recognize the IRC
history of the illinois energy conservation code commercial
History of the Illinois Energy Conservation Code (Commercial)
  • Public Act 093-0936 was signed into law in August of 2004 as the Illinois Energy Conservation Code for Commercial Buildings
  • Became effective April 8, 2006 (2000 IECC/2001 IECC Supplement)
  • Revised to exclude supplements on October 9, 2007
  • On August 18, 2009 the 2009 IECC was adopted for all Commercial projects
illinois energy conservation code residential
Illinois Energy Conservation Code (Residential)
  • Public Act 096-0778 was signed on August 28, 2009 to include Residential structures
  • The Energy Efficient Commercial Building Act became

“The Energy Efficient Building Act”

  • Rules for enforcement were filed with the SOS on January 29, 2010 under Emergency Rules and is effective for enforcement when filed. The Rules are in the first of two Public Comment Periods
what the law requires
What the Law Requires
  • Follow the Latest published edition of the International Energy Conservation Code (IECC)
  • Commercial/Residential permit applications must follow the Code any time a Permit is applied for
amending the illinois energy code
Amending the Illinois Energy Code
  • Commercial:
    • No unit of local government may be less stringent

than the 2009 IECC

    • Nothing prevents a unit of local government from adopting an energy efficiency code or standards that are more stringent than this code
amending the illinois energy code28
Amending the Illinois Energy Code
  • Residential:
    • No unit of local government including any Home Rule Unit , may regulate the IECC in a manner that is either less or more strict than the 2009 IECC
2009 iecc residential more strict
2009 IECC/Residential More Strict
  • The following entities may regulate energy efficient building standards more stringent than the

2009 IECC

      • (i) If on or before May 15, 2009 has adopted by reference the 2006 IECC (equal/more stringent)
      • (ii) If on or before May 15, 2009 has provided the CDB with a code/standard equal to or more stringent than the 2006 IECC
      • (iii) Population of 1,000,000 or more (Chicago)
residential applications of the 2009 iecc chapter 4
Residential Applications of the 2009 IECC (Chapter 4)
  • Structure of the 2009 IECC
    • Chapter 1 Administrative
    • Chapter 2 Definitions
    • Chapter 3 Climate Zones
    • Chapter 4 Residential Energy Efficiency
    • Chapter 5 Commercial Energy Efficiency
    • Chapter 6 Referenced Standards
overview of 2009 iecc residential
Overview of 2009 IECC Residential
  • The focus is on the building envelope
  • Ductwork – seal and insulate
  • There are limited space heating, AC and water heating requirements
  • No appliance requirements
  • Lighting fixtures shall have 50% of permanently installed fixtures with high-efficacy lamps
chapter 1 administration
Chapter 1 - Administration
  • All low rise (3 stories or less) houses, condominiums, townhomes and apartments (R-2, R-3, R-4)
  • If the building is not classified as residential, it is classified as commercial
  • Includes new construction, alterations, repairs and additions
    • i.e. Window replacements are considered under this
exceptions to thermal provisions
Exceptions to Thermal Provisions
  • Very low energy use( less than 3.4 BTU/h-sq ft)
  • Buildings neither heated or cooled
  • Existing buildings
  • Historic buildings
additions alterations renovations repairs
Additions, Alterations, Renovations, Repairs
  • Must conform to new work standards
  • Existing do not need to comply (if not changed)
  • Addition can comply alone or with existing structure
  • Exceptions:
    • Installing storm windows over existing fenestration
    • Glass only replacements
    • Exposed, existing ceiling, wall or floor cavities if already filled with insulation
    • Where existing roof, wall or floor cavity is not exposed
    • Re-roofing when neither sheathing nor insulation is exposed
      • Insulate above or below ceiling
        • Attics without insulation in the cavities
construction documents
Construction Documents
  • Required Information on plans
    • Insulation materials and R-Values
    • Fenestration and U-Factors
    • Mechanical system design criteria
    • Mechanical and service water heating systems and equipment types, along with sizes and efficiencies
    • Duct sealing
    • Duct and pipe insulation and locations
    • Lighting fixture schedule/showing high-efficacy lamps
chapter 2 definitions
Chapter 2 - Definitions
  • Air Barrier: Material(s) assembled and joined together to provide a barrier to air leakage through the building envelope. An air barrier may be a single material or a combination of materials.
  • High Efficacy Lamps: Compact fluorescent lamps, T-8 or smaller diameter linear fluorescent lamps
  • R-Value: Thermal Resistance R=1/U
  • U-Factor: Thermal Transmittance U=R/1
  • Code: The 2009 International Energy Conservation Code
  • Residential Building: Three stories or less above grade

Building Thermal Envelope-The basement walls, exterior walls, floor, roof, and any other building element that enclose conditioned space. This boundary also includes the boundary between conditioned space and any exempt or unconditioned spaces.


Conditioned space – An area or room within a building being heated or cooled, containing uninsulated ducts, or with a fixed opening directly into an adjacent conditioned space.

chapter 3 climate zones
Chapter 3 – Climate Zones
  • Listed by state and county
  • Interior Design Conditions: Max 72 Degrees for Heating and a minimum of 75 degrees for cooling
  • Requirement of materials to be marked for inspection
  • Default Fenestration Factors
chapter 4 residential energy efficiency
Chapter 4 – Residential Energy Efficiency
  • Code Compliance Tools


Total Building “UA” Trade Off

Energy Analysis

None Needed



For Example:




Three Code Compliance Options


U-Factor and “UA”


Simulated Performance






Total Building UA


Simulated Performance



u factor and total ua res check
U-Factor and Total UA (REScheck)
  • U-Factor Alternative
    • Similar to Prescriptive but uses U-Factors instead of R-Values
    • Allows for innovative or less common construction
  • Total UA Alternative
    • Same as U-Factor Alternative but allows trade-offs across all envelope components
attic access hatches
Attic Access Hatches
  • Weatherstrip and insulate doors/panels from conditioned spaces to unconditioned spaces
      • (i.e. attics and crawl spaces)
      • Insulate to a level equivalent to surrounding surfaces
  • Provide access to all equipment that will prevent damaging or compressing the surrounding equipment
  • Install a wood framed or equivalent baffle or retainer when loose fill insulation is installed
air leakage mandatory for all
Air Leakage (Mandatory for all)
  • Air Leakage
  • Recessed Lighting Fixtures
  • Maximum Fenestration U-Factor and SHGC
  • Fireplaces
building thermal envelope
Building Thermal Envelope
  • The following shall be caulked, gasketed , weatherstripped or otherwise sealed with an air barrier material, suitable fim or solid material
  • All joints, seams and penetrations
  • Site built windows, doors and skylights
  • Openings between window and door assemblies and their respective jambs and framing
  • Utility penetrations
  • Dropped ceilings or chases adjacent to the thermal envelope

Knee walls

  • Walls and ceilings separating a garage from conditioned spaces
  • Behind tub and showers on exterior walls
  • Common walls between dwelling units
  • Attic access openings
  • Rim joist junctions
  • All other sources of infiltration
areas for air leakage
Areas for Air Leakage
  • Windows/doors
  • Between sole plate
  • Floors and exterior

wall panels

  • Plumbing
  • Electrical
  • Service access
  • Recessed lighting
  • Rim Joist junction
air sealing and insulation 2 options
Air Sealing and Insulation-2 Options
  • Two Options to Demonstrate Compliance
  • Blower Door-When tested air leakage is <7 ACH when tested with a blower door at 50 Pascals
    • Testing after rough-in and installation of

building envelope penetrations

  • When items listed in Table 402.4.2

applicable to the method of construction

are field verified (Section 402.4.2)

recessed lighting
Recessed Lighting
  • Recessed lighting in the building thermal envelope shall be sealed to limit air leakage between conditioned space and unconditioned space
  • All recessed luminaries shall be sealed with a gasket or caulk between the housing and the interior wall
mechanical equipment
Mechanical Equipment
  • Equipment efficiency is set

by Federal Law-Not the I-Codes

mechanical system controls mandatory
Mechanical System Controls (Mandatory)
  • Programmable thermostat-controls
  • Ducts
    • Sealing (Mandatory)
    • Insulation (Prescriptive)
  • HVAC Piping Insulation
  • Circulating Hot water systems
  • Ventilation
  • Equipment sizing
  • Snow melt controls
  • Pools
programmable thermostat
Programmable Thermostat
  • If forced air: At least one programmable thremostat per dwelling unit
  • Programmed with:
    • Heating temperature set point no higher than 70 degrees
    • Cooling temperature set point no lower than 78 degrees
  • Insulation (Prescriptive)
    • Ducts outside the building envelope

shall be R-8; all other ducts: R-6

  • Sealing (Mandatory)
    • Joints and seams shall comply with IRC Section M1601.4.1
  • Building framing cavities shall not be used as supply ducts
piping insulation
Piping Insulation
  • R-3 required on HVAC systems
    • Exception: Piping that conveys fluids between 55 and 105 degrees
  • R-2 required on all circulating domestic hot water systems
  • The system also requires a readily accessible manual switch
  • An inspection of all pipe insualtion is required prior to cover up
ventilation and equipment sizing
Ventilation and Equipment Sizing
  • Ventilation
    • Outdoor air intakes and exhausts shall have automatic or gravity dampers that close when the ventilation system is not working
  • Equipment Sizing
    • IECC references Section M1401.3 of the IRC
    • Load calculations determine proper size of equipment
    • Calcualtions in accordance with Manual J
snow melt controls
Snow Melt Controls
  • Pavement temperature > 50 degrees and no precipitation is falling and when the outdoor temperature is > 40 degrees, the system shall shut down
  • Pool heaters shall have a readily accessible shut off switch
  • Gas fired heaters shall not have continuously burning pilot
  • Timers to automatically turn on and off
    • Exception Public Health requires 24 hour operation
    • Pump systems with solar heat recvoery
  • New wood burning (Masonry) fireplaces

shall have gasketed doors and outside

combustion air

lighting equipment
Lighting Equipment
  • A minimum of 50% of the lamps in permanently installed lighting fixtures shall be high - efficacy
  • Prescriptive method
simulated performance alternative
Simulated Performance Alternative
  • Local official may approve the use of specific computer software programs. i.e. REMrate
  • Includes both envelope and equipment
  • Allows greater flexibility, allows credits such as:
    • High efficiency furnaces
    • Tight ducts that MUST be tested (Duct Blaster)
    • Exterior shading, favorable orientation
  • Table 405.5.2(1) shall be followed strictly
  • Similar to ENERGY STAR Home guidelines

Code official has the final say and must approve:

    • Software chosen
    • Worksheets to be submitted
  • Mandatory requirements are required for this method also
  • Energy prices taken from approved source by code official
  • All work is subject to inspections
  • Certificate is required
  • Permanently posted on the electrical distribution panel
  • Don’t cover or obstruct the visibility of other required labels
  • Include the following information
    • R-values of insulation installed for the thermal building

envelope including ducts outside

conditioned spaces

    • U-factors for fenestration
    • SHGC for fenestration
    • HVAC efficiencies and types
    • SWH equipment
helpful websites
Helpful Websites
  • Department of Commerce and Economic Opportunity (DCEO)
  • DOE
  • Illinois General Assembly
  • Capital Development Board
  • International Code Council
  • Thanks for inviting me
  • Don Plass

Director of Code Enforcement

Village of Hoffman Estates