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Single-Family Construction

2015 IRC, Chapter 11 - Effective Sep. 1, 2016

Effective Sep. 1, 2016, the state adopted the 2015 International Residential Code energy provisions as the Building Energy Efficiency Performance Standards for residential (one- and two-family residences of three stories or less above grade) construction in Texas.

The ERI Compliance Alternative

New to the 2015 IRC, is the Energy Rating Index (ERI) Compliance Alternative. The Texas Health and Safety Code ยง388.003 allows this optional compliance path that uses an energy rating index is as follows:

For climate zone 2, an energy rating index of:

  • 65 or lower from September 1, 2016, to August 31, 2019
  • 63 or lower from September 1, 2019, to August 31, 2022
  • 59 or lower on or after September 1, 2022

For climate zone 3, an energy rating index of:

  • 65 or lower from September 1, 2016, to August 31, 2019
  • 63 or lower from September 1, 2019, to August 31, 2022
  • 59 or lower on or after September 1, 2022

For climate zone 4, an energy rating index of:

  • 69 or lower from September 1, 2016, to August 31, 2019
  • 67 or lower from September 1, 2019, to August 31, 2022
  • 63 or lower on or after September 1, 2022

Reference: Health and Safety Code, §388.003

Code History

Effective Dates Codes
Prior to 1999 Texas had no mandatory statewide energy code.
Sept. 1, 2001 – Dec. 31, 2011 2000 IECC with 2001 Supplement
Jan. 1, 2012 – Present 2009 IRC, Chapter 11
Sept. 1, 2016 2015 IRC, Chapter 11
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