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  • ENERGY STAR Most Efficient 2025
    Windows, Doors & Skylights
    THE YEAR'S BEST OF ENERGY STAR FOR EFFICIENCY & INNOVATION

    Products that make the ENERGY STAR Most Efficient list for 2025 deliver cutting edge energy efficiency along with the latest in technological innovation. They represent the year’s very best for energy savings and environmental protection.
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Series Name:
Zenith High Fixed
Product Category Field details:
Window
Product Type Field details:
Picture Window
Frame Material:
Fiberglass
ME U-Factor Min Field details:
0.10
ME SHGC Min. Field details:
0.10
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.48
ME Total ES Options Certified Field details:
693
ME Northern Zone Options Field details:
462
ME North-Central Zone Options Field details:
616
ME Southern Zone Options Field details:
326
ME South-Central Zone Options Field details:
322
Series Name:
Zenith Low Fixed
Product Category Field details:
Window
Product Type Field details:
Picture Window
Frame Material:
Fiberglass
ME U-Factor Min Field details:
0.10
ME SHGC Min. Field details:
0.12
ME U-Factor Max Field details:
0.21
ME SHGC Max Field details:
0.53
ME Total ES Options Certified Field details:
671
ME Northern Zone Options Field details:
537
ME North-Central Zone Options Field details:
539
ME Southern Zone Options Field details:
258
ME South-Central Zone Options Field details:
256
Series Name:
Tyrol Fixed Picture
Product Category Field details:
Window
Product Type Field details:
Picture Window
Frame Material:
Vinyl (or other plastic)
ME U-Factor Min Field details:
0.10
ME SHGC Min. Field details:
0.17
ME U-Factor Max Field details:
0.20
ME SHGC Max Field details:
0.48
ME Total ES Options Certified Field details:
78
ME Northern Zone Options Field details:
55
ME North-Central Zone Options Field details:
60
ME Southern Zone Options Field details:
30
ME South-Central Zone Options Field details:
30
Series Name:
Tyrol Tilt Turn
Product Category Field details:
Window
Product Type Field details:
Dual Action (Tilt Turn)
Frame Material:
Vinyl (or other plastic)
ME U-Factor Min Field details:
0.12
ME SHGC Min. Field details:
0.15
ME U-Factor Max Field details:
0.20
ME SHGC Max Field details:
0.41
ME Total ES Options Certified Field details:
113
ME Northern Zone Options Field details:
70
ME North-Central Zone Options Field details:
112
ME Southern Zone Options Field details:
57
ME South-Central Zone Options Field details:
57
Series Name:
Defender 88PH+ XI Fixed
Product Category Field details:
Window
Product Type Field details:
Picture Window
Frame Material:
Vinyl (or other plastic)
ME U-Factor Min Field details:
0.12
ME SHGC Min. Field details:
0.14
ME U-Factor Max Field details:
0.20
ME SHGC Max Field details:
0.42
ME Total ES Options Certified Field details:
5,760
ME Northern Zone Options Field details:
2,896
ME North-Central Zone Options Field details:
5,730
ME Southern Zone Options Field details:
3,934
ME South-Central Zone Options Field details:
3,934
Series Name:
A280/A580/S280/S580/A390 Fixed
Product Category Field details:
Window
Product Type Field details:
Picture Window
Frame Material:
Vinyl (or other plastic)
ME U-Factor Min Field details:
0.12
ME SHGC Min. Field details:
0.07
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.36
ME Total ES Options Certified Field details:
2,610
ME Northern Zone Options Field details:
1,571
ME North-Central Zone Options Field details:
2,202
ME Southern Zone Options Field details:
1,492
ME South-Central Zone Options Field details:
1,084
Series Name:
8361 Fixed Casement
Product Category Field details:
Window
Product Type Field details:
Picture Window
Frame Material:
Vinyl (or other plastic)
ME U-Factor Min Field details:
0.12
ME SHGC Min. Field details:
0.15
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.49
ME Total ES Options Certified Field details:
153
ME Northern Zone Options Field details:
108
ME North-Central Zone Options Field details:
124
ME Southern Zone Options Field details:
60
ME South-Central Zone Options Field details:
41
Series Name:
400/500 Series Picture Window
Product Category Field details:
Window
Product Type Field details:
Picture Window
Frame Material:
Vinyl (or other plastic)
ME U-Factor Min Field details:
0.12
ME SHGC Min. Field details:
0.15
ME U-Factor Max Field details:
0.21
ME SHGC Max Field details:
0.30
ME Total ES Options Certified Field details:
75
ME Northern Zone Options Field details:
41
ME North-Central Zone Options Field details:
64
ME Southern Zone Options Field details:
57
ME South-Central Zone Options Field details:
46
Series Name:
Defender 88PH+ XI Dual Action
Product Category Field details:
Window
Product Type Field details:
Dual Action (Tilt Turn)
Frame Material:
Vinyl (or other plastic)
ME U-Factor Min Field details:
0.12
ME SHGC Min. Field details:
0.12
ME U-Factor Max Field details:
0.20
ME SHGC Max Field details:
0.36
ME Total ES Options Certified Field details:
5,760
ME Northern Zone Options Field details:
2,064
ME North-Central Zone Options Field details:
5,760
ME Southern Zone Options Field details:
4,204
ME South-Central Zone Options Field details:
4,204
Series Name:
400 Series Fixed
Product Category Field details:
Window
Product Type Field details:
Picture Window
Frame Material:
Fiberglass
ME U-Factor Min Field details:
0.12
ME SHGC Min. Field details:
0.12
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.49
ME Total ES Options Certified Field details:
250
ME Northern Zone Options Field details:
187
ME North-Central Zone Options Field details:
218
ME Southern Zone Options Field details:
104
ME South-Central Zone Options Field details:
100
Series Name:
ComfortSmart Picture Window
Product Category Field details:
Window
Product Type Field details:
Picture Window
Frame Material:
Vinyl (or other plastic)
ME U-Factor Min Field details:
0.12
ME SHGC Min. Field details:
0.14
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.30
ME Total ES Options Certified Field details:
5,812
ME Northern Zone Options Field details:
1,762
ME North-Central Zone Options Field details:
2,624
ME Southern Zone Options Field details:
4,948
ME South-Central Zone Options Field details:
1,760
Series Name:
300 Fixed Window
Product Category Field details:
Window
Product Type Field details:
Picture Window
Frame Material:
Fiberglass
ME U-Factor Min Field details:
0.12
ME SHGC Min. Field details:
0.16
ME U-Factor Max Field details:
0.21
ME SHGC Max Field details:
0.51
ME Total ES Options Certified Field details:
46
ME Northern Zone Options Field details:
35
ME North-Central Zone Options Field details:
40
ME Southern Zone Options Field details:
14
ME South-Central Zone Options Field details:
12
Series Name:
Energeto Neo 76 Small Picture Window
Product Category Field details:
Window
Product Type Field details:
Picture Window
Frame Material:
Vinyl (or other plastic)
ME U-Factor Min Field details:
0.12
ME SHGC Min. Field details:
0.16
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.52
ME Total ES Options Certified Field details:
665
ME Northern Zone Options Field details:
507
ME North-Central Zone Options Field details:
572
ME Southern Zone Options Field details:
297
ME South-Central Zone Options Field details:
281
Series Name:
3004 Picture Window
Product Category Field details:
Window
Product Type Field details:
Picture Window
Frame Material:
Vinyl (or other plastic)
ME U-Factor Min Field details:
0.13
ME SHGC Min. Field details:
0.06
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.39
ME Total ES Options Certified Field details:
19,886
ME Northern Zone Options Field details:
9,443
ME North-Central Zone Options Field details:
15,970
ME Southern Zone Options Field details:
14,132
ME South-Central Zone Options Field details:
10,216
Series Name:
Universal Series Fixed Window Exterior Glazed
Product Category Field details:
Window
Product Type Field details:
Picture Window
Frame Material:
Fiberglass
ME U-Factor Min Field details:
0.13
ME SHGC Min. Field details:
0.06
ME U-Factor Max Field details:
0.21
ME SHGC Max Field details:
0.44
ME Total ES Options Certified Field details:
178
ME Northern Zone Options Field details:
101
ME North-Central Zone Options Field details:
162
ME Southern Zone Options Field details:
119
ME South-Central Zone Options Field details:
112
Series Name:
Direct Glaze Plus
Product Category Field details:
Window
Product Type Field details:
Picture Window
Frame Material:
Wood
ME U-Factor Min Field details:
0.13
ME SHGC Min. Field details:
0.10
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.47
ME Total ES Options Certified Field details:
863
ME Northern Zone Options Field details:
388
ME North-Central Zone Options Field details:
642
ME Southern Zone Options Field details:
579
ME South-Central Zone Options Field details:
382
Series Name:
6010 Picture Window
Product Category Field details:
Window
Product Type Field details:
Picture Window
Frame Material:
Vinyl (or other plastic)
ME U-Factor Min Field details:
0.13
ME SHGC Min. Field details:
0.12
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.53
ME Total ES Options Certified Field details:
1,320
ME Northern Zone Options Field details:
689
ME North-Central Zone Options Field details:
1,115
ME Southern Zone Options Field details:
832
ME South-Central Zone Options Field details:
762
Series Name:
CPW Casement Picture Window
Product Category Field details:
Window
Product Type Field details:
Picture Window
Frame Material:
Vinyl (or other plastic)
ME U-Factor Min Field details:
0.13
ME SHGC Min. Field details:
0.16
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.30
ME Total ES Options Certified Field details:
401
ME Northern Zone Options Field details:
203
ME North-Central Zone Options Field details:
384
ME Southern Zone Options Field details:
274
ME South-Central Zone Options Field details:
257
Series Name:
Lighthouse/Commander Casement Fixed
Product Category Field details:
Window
Product Type Field details:
Picture Window
Frame Material:
Vinyl (or other plastic)
ME U-Factor Min Field details:
0.13
ME SHGC Min. Field details:
0.12
ME U-Factor Max Field details:
0.21
ME SHGC Max Field details:
0.46
ME Total ES Options Certified Field details:
688
ME Northern Zone Options Field details:
590
ME North-Central Zone Options Field details:
646
ME Southern Zone Options Field details:
290
ME South-Central Zone Options Field details:
275
Series Name:
New Aspect/Endure Picture Window
Product Category Field details:
Window
Product Type Field details:
Picture Window
Frame Material:
Vinyl (or other plastic)
ME U-Factor Min Field details:
0.13
ME SHGC Min. Field details:
0.17
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.29
ME Total ES Options Certified Field details:
175
ME Northern Zone Options Field details:
104
ME North-Central Zone Options Field details:
138
ME Southern Zone Options Field details:
117
ME South-Central Zone Options Field details:
80