The Energy Code Workshop
Understanding the Energy Code
I. Review of the “why and the what”
II. Team Exercise: energy efficiency strategies
III. Market-driven data as defined by scalable and market-
IV. Four market-proven case studies that conform to the
V. Top 5 marketing strategies for crafting the energy
Focus group findings:
2. not practical
U.S. residential and commercial buildings
together use more energy and emit more
carbon dioxide than either industrial or
transportation sector and:
39% of total energy
2/3 of electricity
1/8 of water
Energy Codes and Energy Efficient Buildings:
• set minimum requirements for energy efficient design
• are more comfortable, healthy, and cost less to
• can create new economic opportunities for business
by promoting new energy efficient technologies
• Cost less to operate, meaning increased bottom line
• put more money in the consumers pocket
• estimated to generate cost savings of over 2.5B per
year when guided by the IECC 2099
Utility bill reduction estimates
2009 IECC versus the 2006 IECC = 17% greater
savings in the Phoenix area.
2012 IECC versus the 2006 IECC = 26.8% - 28.7%
greater savings in Phoenix.
2015 IECC versus the 2006 IECC = 50% savings
Economic impact of the 2009 IECC
· The one-time cost for a builder to build an average home to
the 2009 IECC is $560/home.
· The homeowner is expected to save $211/per year on their
energy bills – for the life of the home.
· If the numbers hold true, the average homeowner’s
mortgage payment will go up less than $3.50 per month, while
their utility bills will drop more than $17.50 per month. Even if we
assume utility costs don’t rise in the next 30 years, the average
homeowner will keep more than $5,000 in their pockets over the
life of their mortgage.
· Building just 10,000 homes will result in roughly $5.6 million
in one-time, taxable construction costs that will return
approximately $50 million in resident savings over the life of their
· A large piece of the $5.6 million in additional construction
costs will be creating jobs for local testing and inspection
Notable requirements in the 2009 IECC for Arizona:
Building envelope must be caulked and sealed.
Slab-on-grade insulation is R-10 to a depth of 2 feet in Zones 4 and 5. Insulation is not required
for slab-on-grade foundations in Zones 2 and 3.
Supply ducts in attics must be insulated to R-8. Return ducts in attics and all ducts in
crawlspaces, unheated basements, garages, or otherwise outside building envelope must be
insulated to R-6.
All ducts must be sealed and either:
o verified by pressure testing – the duct system has to be tested and the air leakage out of ducts
must be kept to an acceptable maximum level.
o installed entirely within the building thermal envelope – testing is not required if all ducts are
inside the building thermal envelope (for example in heated basements), though the ducts still
have to be sealed.
Piping for hydronic (boiler) heating systems must be insulated to R-3.
Although vapor retarders are not required by the IECC, the I-codes do set wall vapor retarder
requirements in Section R601.3 of the 2009 IRC, and vapor retarders are required in Zone 5.
Less insulation is allowed for mass walls and more insulation is required for steel framing.
50% of the lighting “lamps” (bulbs, tubes, etc.) in a building must be high efficacy. Compact
fluorescents qualify, standard incandescent bulbs do not.
Standard I-code administrative requirements (inspections, documentation) apply.
A certificate must be posted near the electrical panel listing insulation levels and other energy
Requirements for Arizona