The 2012 IECC America’s Model Building Energy Code

October 30, 2011 Presentation to

ICC Sustainability Member Council

Governing Committee

Eric Lacey

Responsible Energy Codes Alliance

Responsible Energy

Codes Alliance

• A broad coalition of energy

efficiency professionals,

regional organizations,

product and equipment

manufacturers, trade

associations, and

environmental organizations

that promote the adoption

and implementation of the

most recent version of the

IECC nationwide

• Air Barrier Association of America

• Alliance to Save Energy

• American Chemistry Council

• American Council for an Energy-Efficient Economy

• Cardinal Glass Industries, Inc.

• CertainTeed Corporation

• EPS Molders Association

• Extruded Polystyrene Foam Association

• Guardian Industries Corporation

• Hogan & Hartson LLP

• Institute for Market Transformation

• Johns Manville Corporation

• Knauf Insulation

• Midwest Energy Efficiency Alliance

• National Fenestration Rating Council

• Northeast Energy Efficiency Partnerships

• North American Insulation Manufacturers Association

• Owens Corning

• Pactiv Corporation

• Polyisocyanurate Insulation Manufacturers Association

• Sierra Club

• Southeast Energy Efficiency Alliance

• Southwest Energy Efficiency Project

Why Building Energy

Codes Matter

• Share of Energy

Consumed by Major

Sectors of the

Economy (2010)

Source: U.S. Energy Information

Administration

Why Building Energy

Codes Matter

Why Building Energy

Codes Matter

• Buildings account for

70% of electricity use

• Buildings account for

38% of CO2

emissions (Source: US Green Building Council)

Residential Progress

Commercial Progress

2012 IECC Residential Improvements

Better Thermal Envelope -- Improved Insulation values

CLIMATE

ZONE CEILING

R-

VALUE

WOOD

FRAME

WALL

R-

VALUE

MASS

WALL

R-

VALUEi

FLOOR R-

VALUE

BASEMENTc

WALL

R-

VALUE

SLABd

R-

VALUE &

DEPTH

CRAWL

SPACE c

WALL

R-

VALUE

1 30 13 3/4 13 0 0 0

2 30 38 13 4/6 13 0 0 0

3 30 38 13

20 or 13+5h

5/8

8/13 19 5 / 13f 0 5 / 13

4 except

Marine 38 49

13

20 or 13+5h

5/10

8/13 19 10 / 13 10, 2ft 10 / 13

5 and

Marine 4 38 49 20 or 13+5h 13/17 30g

10 / 13

15/19 10, 2ft

10 / 13

15/19

6 49 20+5 or

13+510h 15/19 20 30g 15 / 19 10, 4ft

10 / 13

15/19

7 and 8 49

21

20+5 or

13+510h

19/21 38g 15 / 19 10, 4ft 10 / 13

15/19

Better Thermal Envelope -- Simplified and More Efficient Fenestration

CLIMATE ZONE FENESTRATION

U-FACTOR

SKYLIGHT

U-FACTOR

GLAZED

FENESTATION SHGC

1 1.20

NR 0.75 0.30 0.25

2 0.65 0.40 0.75 0.65 0.30 0.25

3 0.50 0.35 0.65 0.55 0.30 0.25

4 except Marine 0.35 0.60 0.55 NR 0.40

5 and Marine 4 0.35 0.32 0.60 0.55 NR

6 0.35 0.32 0.60 0.55 NR

7 and 8 0.35 0.32 0.60 0.55 NR

Other Improvements in

Residential Buildings

• Tighter Ducts and Objective Testing

• Tighter Homes and Objective Testing

• More Efficient Hot Water Distribution

• More Efficient Lighting

Code Consistency

2012 IECC Commercial Improvements

Better Thermal Envelope -- Improved Insulation values

• Improvements in:

– Roofs

– Walls

– Floors

– Opaque Doors

Better Thermal Envelope -- Simplified and More Efficient Fenestration

Climate Zone 1 2 3 4 -5 6 7 -8

Vertical Fenestration

U-factor

Fixed

fenestration 0.50 0.50 0.46 0.38 0.36 0.29

Operable

fenestration 0.65 0.65 0.60 0.45 0.43 0.37

Entrance

doors 1.10 0.83 0.77 0.77

0.77

0.77

SHGC

SHGC 0.25 0.25 0.25 0.40 0.40 0.45

Skylights

U-factor 0.75 0.65 0.55 0.50 0.50 0.50

SHGC 0.35 0.35 0.35 0.40 0.40 NR

Other Improvements in

Commercial Buildings

• Improved air barrier requirements

• Updated and improved equipment efficiency

• New technical upgrades

– HVAC commissioning

– Daylighting provisions

• Innovative Options (select one)

– High performance lighting

– High performance HVAC

– On-site renewables

2012 IECC Energy Savings

“[The 2012 IECC]

represents the

largest, one-step

efficiency increase

in the history of the

national model

energy code.”

U.S. Department

of Energy

Energy Savings

Energy Savings

2012 IECC Commercial

and ASHRAE 90.1-2010

• 2012 IECC commercial estimated

30% improvement over 2006

IECC commercial.

• ASHRAE 90.1-2010 site savings:

18.5% over 90.1-2007.

• States must certify to U.S. DOE by

Oct. 18, 2013 that they have

updated state code requirements

to meet or exceed 90.1-2010.

• IECC commercial chapter often

adopted as alternative to ASHRAE

90.1. DOE comparison available.

2012 IECC Residential

• Estimated 30% improvement over

2006 IECC.

• U.S. DOE issued preliminary

determination finding substantial

improvement over 2009 IECC.

• When determination is finalized,

states have 2 years to certify

review of whether state code

meets or exceeds 2012 IECC.

Energy Savings

• Alliance to Save Energy: “If all states

adopted the 2012 IECC in 2012 and

achieved full compliance by 2013 …”

– 3.5 quadrillion Btu annual energy savings by 2030.

– $40 billion annual energy cost savings by 2030.

– 200 million metric tons of carbon dioxide emissions

avoided annually by 2030.

Equivalents

– 3.5 quadrillion Btu annual

energy savings by 2030.

– $40 billion annual energy

cost savings by 2030.

– 200 million metric tons of

carbon dioxide emissions

avoided annually by 2030.

– Enough to heat 3.5 million

average homes each year

– Value of all 32 NFL teams

= $32.7 billion. (Forbes)

– Annual CO2 emissions

from 39,215,686 cars, or

– Annual CO2 emissions

from 47.4 coal fired power

plants (U.S. EPA)

RECA Resources Available

• 2012 IECC RECA

Compliance Guides

• Available on

www.reca-codes.com

• Hard copies available

directly from RECA

202-339-6366

Eric Lacey, Chairman

Responsible Energy Codes Alliance

eric@reca-codes.com

202-339-6366

www.reca-codes.com

Thank You!