DOE/CE-0180
January 2008
Department of Energy
Assistant Secretary
Energy Efficiency and Renewable Energy |  |
ZIP-Code Results
Here is what we know about your house. You live in Phoenix, AZ and your zip code starts with 850.Your existing house has ductwork in an unheated part of the house. Your alternative investment rate of return is 3.4%. The following table shows what we know about your heating and cooling systems:
| | Heating | Cooling | | System | Electric Furnace | Central Electric |
| Efficiency | Medium (100.0%) | Low (SEER = 7.0) |
| Cost | 9.31 cents/kWh | 9.31 cents/kWh |
If you want more information about how to buy or install insulation, please read the Insulation Fact Sheet. To view the cost values used in this calculation, please see the Insulation Cost Table. Here are our insulation level recommendations for your home.
| Wood-Framed Building |
| Insulation Location | R-Add* | R-Value* | Notes |
| Attic | 49.0 | 49.0 | - |
* R-Values have units of F-ft2-h/Btu. R-Add is the R-Value of the insulation to be added. R-Value is the sum of the R-Value of the existing insulation and the R-Value of the insulation to be added.
For more information, contact the facility manager for Building Envelope Research:
Andre O. Desjarlais
Oak Ridge National Laboratory
P. O. Box 2008, MS 6070
Oak Ridge, TN 37831-6070
E-mail desjarlaisa@ornl.gov
Revised: February 12, 2008