Terry F. Brewer & Associates

619 Mercury Ave., Suite 108

Duncanville, Texas 75137

(972) 298-3525  Fax (972) 298-3521    


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IECC News       




*After Jan 22, 2006 the Energy System Laboratory will require Seer 14 A/C units when using R-6 duct work  -   ESL Letter, PDF Link

Note: In ESL letter there other are ways to use R-6 duct work.

NFRC News:                                                                       


The code requires NFRC window labeling to take advantages of the Increase in U-Value or SHGC.


Before using Commercial windows in residential!

Most Commercial windows do not have NFRC labeling. Therefore it is expensive to prove that a windows will meet the SHGC, of equal to, or less than 0.40, mandated in the parts of the country that are below 3,500 HDD (as is required in most of Texas).

 Link to NFRC


To determine the thermal and solar optical properties of unlabeled glazing and window systems we can run Optics5, THERM 5, or WINDOW 5 software model simulator. In some cities this is all that is need.

Texas Inacts IECC Energy Standards:

Senate Bill 5, Chapter 386. Texas Emissions Reduction Plan, makes International Energy Conservation Code (IECC) 2000 the state energy code. Link to chapter 386