Energy Star is a joint program of the U.S. Environmental Protection Agency and the U.S. Department of Energy helping us all save money and protect the environment through energy efficient products and practices. Results are already adding up. Americans, with the help of Energy Star, saved enough energy in 2008 alone to avoid greenhouse gas emissions equivalent to those from 29 million cars all while saving $19 billion on their utility bills. The Energy Star performance criteria for windows and doors is different depending on what region of the country the product is being tested. Below is the Energy Star climate map and corresponding requirements for each region. Krestmark manufactures vinyl windows that, with several glazing options such as Argon gas, meet energy star guidelines in all regions. Energy Star Qualification Criteria for Residential Windows Climate Zones - U.S. U-Factor SHGC Northern** <0.30 Any Northern** =0.31 >0.35 Northern** =0.32 >0.40 North-Central <0.30 <0.40 South-Central <0.30 <0.25 Southern <0.40 <0.25 ENERGY STAR Residential Windows Version 6.0 specification, effective 1/1/15; **Northern Zone prescriptive, effective 1/1/16. Performance Data for Krestmark Vinyl 220 Replacement Window 3/4" OA Insulated U-Factor SHGC VT U-Factor SHGC VT Clear air no grilles 0.47 0.61 0.65 0.47 0.66 0.69 Clear air w/grilles 0.47 0.55 0.58 0.47 0.60 0.62 Clear argon no grilles 0.45 0.63 0.65 0.45 0.66 0.69 Clear argon w/grilles 0.45 0.56 0.58 0.45 0.60 0.62 E66 LoE air no grilles 0.33 0.22 0.51 0.31 0.23 0.54 E66 LoE air w/grilles 0.33 0.20 0.46 0.31 0.21 0.49 E66 LoE argon no grilles 0.29 0.22 0.51 0.28 0.23 0.54 E66 LoE argon w/grilles 0.29 0.20 0.46 0.28 0.21 0.49
Performance Data for Krestmark Vinyl 220 Replacement Window Dual 3/4 OA Insulated U-Factor SHGC VT Clear air no grilles 0.47 0.63 0.66 Clear air w/grilles 0.47 0.57 0.59 E66 LoE air no grilles 0.33 0.22 0.52 E66 LoE air w/grilles 0.33 0.20 0.46 E66 LoE argon no grilles 0.30 0.22 0.52 E66 LoE argon w/grilles 0.30 0.20 0.46 Clear air no grilles 0.48 0.63 0.65 0.48 0.65 0.68 Clear air w/grilles 0.48 0.56 0.58 0.49 0.58 0.61 E66 LoE air no grilles 0.33 0.22 0.51 0.32 0.24 0.54 E66 LoE air w/grilles 0.33 0.20 0.46 0.32 0.22 0.49 E66 LoE argon no grilles 0.29 0.22 0.51 0.27 0.23 0.54 E66 LoE argon w/grilles 0.29 0.20 0.46 0.27 0.21 0.48 Dual 5/8 OA Insulated U-Factor SHGC VT Clear air no grilles 0.48 0.63 0.66 Clear air w/grilles 0.48 0.57 0.59 E66 LoE air no grilles 0.33 0.23 0.52 E66 LoE air w/grilles 0.33 0.21 0.46 E66 LoE argon no grilles 0.29 0.22 0.52 E66 LoE argon w/grilles 0.29 0.20 0.46
Clear air no grilles 0.47 0.63 0.65 0.47 0.65 0.68 Clear air w/grilles 0.47 0.56 0.58 0.47 0.58 0.61 Clear argon no grilles 0.45 0.63 0.65 0.45 0.66 0.69 Clear argon w/grilles 0.45 0.56 0.58 0.45 0.60 0.62 E66 LoE air no grilles 0.32 0.22 0.51 0.31 0.23 0.54 E66 LoE air w/grilles 0.32 0.20 0.46 0.31 0.21 0.49 E66 LoE argon no grilles 0.29 0.22 0.51 0.27 0.23 0.54 E66 LoE argon w/grilles 0.29 0.20 0.45 0.27 0.21 0.49 Performance Data for Krestmark Vinyl 250 Series Windows Casement/Awning/Picture Picture Window Clear air no grilles 0.41 0.53 0.55 0.46 0.70 0.73 Clear air w/grilles 0.41 0.48 0.49 0.46 0.63 0.66 E66 LoE air no grilles 0.29 0.19 0.43 0.29 0.24 0.57 E66 LoE air w/grilles 0.29 0.17 0.39 0.29 0.22 0.52 E66 LoE argon no grilles 0.26 0.18 0.43 0.25 0.24 0.57 E66 LoE argon w/grilles 0.26 0.17 0.39 0.25 0.22 0.52 Performance Data for Porter-lite Series 400 MFG by Krestmark Clear air no grilles 0.49 0.66 0.69 0.47 0.72 0.75 Clear air w/grilles 0.49 0.59 0.62 0.47 0.65 0.68 E66 LoE air no grilles 0.32 0.23 0.54 0.30 0.25 0.59 E66 LoE air w/grilles 0.33 0.21 0.48 0.31 0.23 0.53 E66 LoE argon no grilles 0.27 0.23 0.54 0.25 0.25 0.59 E66 LoE argon w/grilles 0.28 0.21 0.48 0.26 0.23 0.53
Performance Data for Porter-lite Series 400 MFG by Krestmark Dual 5/8 OA Insulated U-Factor SHGC VT Clear air no grilles 0.48 0.66 0.69 Clear air w/grilles 0.48 0.59 0.62 E66 LoE air no grilles 0.32 0.23 0.54 E66 LoE air w/grilles 0.32 0.21 0.48 E66 LoE argon no grilles 0.29 0.23 0.54 E66 LoE argon w/grilles 0.29 0.21 0.48 Performance Data for Krestmark Impact Vinyl 4000 Series Clear air no grilles 0.48 0.62 0.67 0.47 0.67 0.73 Clear air w/grilles 0.48 0.56 0.60 0.48 0.61 0.66 E66 LoE air no grilles 0.33 0.23 0.53 0.31 0.25 0.57 E66 LoE air w/grilles 0.35 0.21 0.47 0.33 0.23 0.52 E66 Argon no grilles 0.28 0.23 0.53 0.26 0.25 0.57 E66 Argon w/grilles 0.29 0.21 0.47 0.27 0.23 0.52 Performance Data for Krestmark Impact Vinyl 4000 Series Dual 3/4 OA Insulated U-Factor SHGC VT Clear air no grilles 0.48 0.62 0.67 Clear air w/grilles 0.48 0.55 0.60 E66 LoE air no grilles 0.33 0.23 0.53 E66 LoE air w/grilles 0.35 0.21 0.47 E66 Argon no grilles 0.28 0.23 0.53 E66 Argon w/grilles 0.30 0.21 0.47
Performance Data for Krestmark Aluminum 100 Series Windows Clear air no grilles 0.64 0.69 0.71 0.59 0.73 0.76 Clear air w/grilles 0.64 0.63 0.64 0.59 0.66 0.69 E66 LoE air no grilles 0.49 0.25 0.56 0.43 0.26 0.60 E66 LoE air w/grilles 0.49 0.23 0.50 0.43 0.24 0.54 E66 LoE argon no grilles 0.44 0.24 0.56 0.38 0.26 0.60 E66 LoE argon w/grilles 0.44 0.22 0.50 0.38 0.23 0.54 Performance Data for Krestmark Aluminum 150 Series Windows Clear air no grilles 0.67 0.68 0.70 0.59 0.73 0.76 Clear air w/grilles 0.67 0.61 0.63 0.59 0.66 0.69 E66 LoE air no grilles 0.52 0.25 0.55 0.43 0.26 0.60 E66 LoE air w/grilles 0.52 0.22 0.49 0.43 0.24 0.54 E66 LoE argon no grilles 0.48 0.24 0.55 0.38 0.26 0.60 E66 LoE argon w/grilles 0.48 0.22 0.49 0.38 0.23 0.54 Performance Data for Krestmark Aluminum 175 Series Windows Clear air no grilles 0.65 0.68 0.71 0.59 0.73 0.76 Clear air w/grilles 0.65 0.62 0.63 0.59 0.66 0.69 E66 LoE air no grilles 0.50 0.25 0.56 0.43 0.26 0.60 E66 LoE air w/grilles 0.50 0.23 0.51 0.43 0.24 0.54 E66 LoE argon no grilles 0.45 0.24 0.56 0.38 0.26 0.60 E66 LoE argon w/grilles 0.45 0.22 0.51 0.38 0.23 0.54