ENERGY STAR
ENERGY STAR Qualified Homes
Codes & Standards Information
Insulation Requirements for the National Builder Option Package
The National Builder Option Package requires that the insulation levels of a home meet or exceed Sections N1102.1 and
N1102.2 of the 2004 IRC. For example, compliance may be determined by meeting the prescriptive insulation
requirements listed by component below. Compliance may also be determined using U-factor alternatives or a total UA
alternative as defined in Section N1102.1.2 and Section N1102.1.3. In all cases, insulation shall be inspected to Grade I
installation as defined in the RESNET Standards by a RESNET-certified rater. Note that the fenestration requirements of
the 2004 IRC do not apply to the fenestration requirements of the National Builder Option Package.
Climate Zone
Ceilina
R-Value
Wood Frame
Wall R-Value
Floor
R-Value
Basement
Wall
R-Value
Slab
R-Value &
Deoth
Crawl
Soace
R-Value
1
30
13
13
0
0
0
2
30
13
13
0
0
0
3
30
13
19
0
0
5/13
4 except Marine
38
13
19
10/13
10,2 ft.
10/13
5 and Marine 4
38
19 or 13+5
30
10/13
10,2 ft.
10/13
6
49
19 or 13+5
30
10/13
10,4 ft.
10/13
7 and 8
49
21
30
10/13
10,4 ft.
10/13
Reference: 2004 International Supplement to the International Codes. Copyright 2004. Falls Church, Virginia: International Code
Council, Inc. Reproduced with permission. All rights reserved. (Excerpted from 2004 IRC Table N1102.1)
Best Practices for Sizing Air Conditioners and Heat Pumps
Best practices for sizing air conditioners and heat pumps include:
•	Sizing to the manufacturers' performance data;
•	Sizing the equipment for the total and latent load capacities;
•	Determining the auxiliary heat balance point when sizing heat pumps; and
•	Considering both the cooling and heating loads in different climates when sizing heat pumps.
ENERGY STAR Products - Average Energy Savings & Key Product Criteria
Product
Average Energy
Savings
Key Product Criteria
Air Conditioner
25%
SEER > 14 ; EER > 11.5
Heat Pump
20%
SEER > 14 ; EER > 11.5; HSPF > 8.2
Furnace
15%
AFUE > 90% (About 15% more efficient than the minimum federal
efficiency standards)
Dish Washers
25%
Energy Factor > 0.58: At least 25% more energy efficient than minimum
Federal government standards
Clothes Washers
50%
Minimum Modified Energy Factor (MEF) of 1.42
Refrigerator
15%
At least 15% more energy efficient than the minimum Federal
government standard (NAECA)
Page 1 of 2

-------
ENERGY STAR
ENERGY STAR Qualified Homes
Codes & Standards Information
Product
Average Energy
Savings
Key Product Criteria
Windows
ENERGY STAR
Home Windows for
IRC Climate Zones
If IRC Climate
Zone is not 2 or 4,
then refer to the
ENERGY STAR
Window Climate
Zones below
IRC Climate Zone 4:
IRC Climate Zone 2:
U-Factor < 0.40;
U-Factor < 0.55;
U-Factor < 0.56
U-Factor < 0.57
U-Factor < 0.58
U-Factor < 0.59
U-Factor < 0.60
U-Factor < 0.61
U-Factor < 0.62
U-Factor < 0.63
U-Factor < 0.64
Savings vary by
climate region (as
defined by the
ENERGY STAR
windows program)
and home
characteristics
See web-site for
correct selection of
ENERGY STAR
windows for
building site
Northern Climate Zone:
North/Central Climate Zone:
South/Central Climate Zone:
Southern Climate Zone:
SHGC < 0.45
SHGC < 0.35; or
SHGC < 0.33
SHGC < 0.32
SHGC <0.31
SHGC < 0.30
SHGC < 0.29
SHGC < 0.28
SHGC < 0.27
SHGC < 0.26
SHGC < 0.25
U-Factor < 0.35
U-Factor < 0.40;
U-Factor < 0.40;
U-Factor< 0.41
U-Factor< 0.42
U-Factor< 0.43
U-Factor < 0.65;
U-Factor< 0.66
U-Factor< 0.67
U-Factor< 0.68
U-Factor< 0.69
U-Factor< 0.70
U-Factor< 0.71
U-Factor< 0.72
U-Factor< 0.73
U-Factor< 0.74
U-Factor< 0.75;
SHGC < Any
SHGC < 0.55
SHGC < 0.40; or
SHGC < 0.36
SHGC <0.31
SHGC < 0.24
SHGC < 0.40; or
SHGC <0.39
SHGC <0.39
SHGC <0.38
SHGC <0.37
SHGC <0.37
SHGC < 0.36
SHGC <0.35
SHGC <0.35
SHGC < 0.34
SHGC < 0.33
http://www.enerqystar.qov/index.cfm?c=windows doors.pr crit windows
Thermostat
Savings depend on
homeowner use
Shipped with a default energy saving program that is capable of
maintaining two separate programs and four temperature settings or
more for each day
Ventilating Fans
65%
Range hoods (up to 500 cfm): maximum allowable sound level of 2.0
sones; minimum efficacy level of 2.8 cfm/Watt
Bathroom fans (10 to 80 cfm): maximum allowable sound level of 2.0
sones; minimum efficacy level of 1.4 cfm/Watt; minimum rated airflow
at 0.25 static w.g. 60% of 0.1 static w.g. airflow
Bathroom fans (90 to 130 cfm): maximum allowable sound level of 2.0
sones; minimum efficacy level of 2.8 cfm/Watt; minimum rated airflow
at 0.25 w.g. 70% of 0.1 static w.g. airflow
Bathroom fans (140 to 500 cfm): maximum allowable sound level of
3.0 sones; minimum efficacy level of 2.8 cfm/Watt; minimum rated
airflow at 0.25 w.g. 70% of 0.1 static w.g. airflow
Light sources must use pin-based fluorescent technology
Warranty provided must be a minimum of 1 year
Lighting
66%
http://www.enerqystar.qov/index.cfm?c=liqhtinq.pr lighting
Ceiling Fans
Savings depend on
homeowner use
http://www.energystar.gov/index.cfm?c=ceiling fans.pr ceiling fans
Page 2 of 2

-------