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91 Table 2.5: Climate zones 4C, 5A and 5B Component 2009 IECC 2012 IECC 40% <20

91 Table 2.5: Climate zones 4C, 5A and 5B Component 2009 IECC 2012 IECC 40% <2006 IECC 50% <2006 IECC Net Zero Wall Insulation Option 1 Wall Cavity Insulation R-value R-20 R-20 R-20 R-21 R-30 Double Wall Wall Insulation Option 2 Wall Cavity Insulation R-value R-13 R-13 R-13 R-13 R-19 Wall Continuous Insulation R-value R-5 R-5 R-5 R-7.5 R-10 Ceiling Insulation R-value R-38 R-49 R-49 R-49 R-60 Basement Ceiling Insulation None None None None None Under Slab Insulation None None None None None Basement Wall R-13 inside R-19 inside R-19 inside R-19 inside R-21 inside Basement Ceiling Insulation R-30 R-30 R-30 R-30 R-30 Under Slab Insulation None None None None None Basement Wall None None None None None Under Slab Insulation Level None None None None None Slab Edge Insulation Level R-10, 2 ft R-10, 2 ft R-10, 2 ft R-10, 2 ft R-10, 2 ft Window U-value, SHGC U=0.35, SHGC=NA U=0.32, SHGC=NA U=0.32, SHGC=NA U=0.32, SHGC=NA U=0.20, SHGC=0.40 House Tightness (ACH50) 7 or Checklist 3 & Checklist 2 & Checklist 1 & Checklist 0.6 & Checklist Ventilation No Heat Exchange No Heat Exchange No Heat Exchange HRV>60% SRE HRV>60 SRE w/bypass Duct Location Not Specified Not Specified Conditioned Space Conditioned Space Conditioned Space Duct Insulation R-8/R-6* R-8/R-6* R-4 R-4 R-4 Heater Type Typically Gas Furnace Typically Gas Furnace Typically Gas Furnace Typically Gas Furnace Air Source HP Heater Efficiency Minimum Allowed Minimum Allowed 90 AFUE 90 AFUE 10 HSPF AC Efficiency (SEER)** Minimum Allowed Minimum Allowed Minimum Allowed Minimum Allowed 18 Appliances Not Specified Not Specified Not Specified Energy Star Energy Star Water Fixtures Not Specified Not Specified Not Specified Low Flow Fixtures Low Flow Fixtures Lighting Not Specified Not Specified >=80% Energy Star >=80% Energy Star Fluorescent or LED Hot Water Heating Minimum Allowed Minimum Allowed Minimum Allowed Minimum Allowed HP 2.0 EF * Attic/Other. No insulation required in the conditioned space. ** SEER 13 except Alabama, Arkansas, Delaware, Florida, Georgia, Hawaii, Kentucky, Louisiana, Maryland, Mississippi, North Carolina, Oklahoma, South Carolina, Tennessee, Texas, Virginia, Arizona, California, Nevada, and New Mexico require SEER 14 after January 1, 2015. Conditioned Basement or Crawl Space Unconditioned Basement or Crawl Space Slab uploads/Geographie/ residential-guide-97.pdf