1. (a) Unless otherwise required by federal law or NOFA, this subsection is not applicable to Housing rehabilitation activities that do not exceed $10,000 in total construction costs.

2. (b) A proposed scope of work and awarded construction contract for existing single family residential dwellings that are rehabilitated shall contain, at a minimum, six of the measures described in paragraphs (1) - (16) of this subsection:

   1. (1) Airsealing of all penetrations in the building envelope in accordance with Section N1102.4.1 of the 2009 International Residential Code. Exhaust fans in bathrooms and kitchens are required if Airsealing is completed;
   2. (2) Airsealing of ductwork located in unconditioned spaces in accordance with Section M1601.4.1 of the 2009 International Residential Code. Ductwork located in unconditioned spaces shall be insulated to R-8;
   3. (3) Attic insulation shall be increased to R-30 (R-38 in Climate Zone 4 as defined by Figure N1101.2 of the 2009 International Residential Code), including insulation covering the top plates of exterior walls. Baffles shall be installed in framing bays of existing soffit vents;
   4. (4) Attic accesses shall be insulated in accordance with Section N1102.2.3 of the 2009 International Residential Code;
   5. (5) Energy Star certified ceiling fans with light(s) shall be installed in each bedroom and in the main living space;
   6. (6) Inoperable windows requiring replacement shall be replaced with Energy Star certified windows for southern climates, meeting the U-factor and Solar Heat Gain Coefficient for the climate zone of the dwelling as identified in Table N1101.2 of the 2009 International Residential Code;
   7. (7) Windows located on eastern and western facing walls shall have solar shades permanently installed;
   8. (8) South facing windows shall have permanently installed overhangs sized to keep summer sun from entering the home while allowing winter sun to enter the home. Flashing details shall maintain a positive drainage plane;
   9. (9) Exterior doors requiring replacement shall be replaced with Energy Star certified exterior doors;
   10. (10) All incandescent light bulbs in the kitchen, bathrooms, bedrooms, hallways, and the main living area shall be replaced with Energy Star certified compact florescent lamps (CFLs) or light-emitting diodes (LEDs);
   11. (11) All inoperable showerheads requiring replacement shall be WaterSense certified products;
   12. (12) All inoperable faucets requiring replacement shall be WaterSense certified products. If existing faucets are operable and do not need to be replaced, WaterSense certified aerators shall be installed;
   13. (13) Exhaust fans venting to the exterior shall be installed in all bathrooms and the kitchen in accordance with Chapter 15 of the 2009 International Residential Code;
   14. (14) Replacement or installation of central heating and cooling equipment shall be sized as specified in Section M1401.3 of the 2009 International Residential Code;
   15. (15) Weatherstripping existing and operable exterior doors and windows;
   16. (16) Replacement of a 40-gallon natural gas domestic water heater with a new one with a minimum Energy Factor of 0.67. Replacement of a 40-gallon electric domestic water heater with a new one with a minimum Energy Factor of 0.93. Domestic water heaters with different storage capacities shall comply with Energy Star requirements.
3. (c) If one or more of these measures are existing and in operable condition, they may be counted as a required measure.

Source Note:The provisions of this §21.6 adopted to be effective January 9, 2014, 39 TexReg 76.