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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:
Siteline Clad Wood (W-5500) Fixed Direct Set Geo
Product Category Field details:
Window
Product Type Field details:
Picture Window
Frame Material:
Wood
ME U-Factor Min Field details:
0.14
ME SHGC Min. Field details:
0.18
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.52
ME Total ES Options Certified Field details:
394
ME Northern Zone Options Field details:
282
ME North-Central Zone Options Field details:
132
ME Southern Zone Options Field details:
125
ME South-Central Zone Options Field details:
13
Series Name:
750 Sliding Glass Door
Product Category Field details:
Door
Product Type Field details:
Sliding Patio Door
Frame Material:
Fiberglass
ME U-Factor Min Field details:
0.14
ME SHGC Min. Field details:
0.14
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.40
ME Total ES Options Certified Field details:
31
ME Northern Zone Options Field details:
19
ME North-Central Zone Options Field details:
29
ME Southern Zone Options Field details:
20
ME South-Central Zone Options Field details:
18
Series Name:
EU 76 Septem 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:
0.14
ME SHGC Min. Field details:
0.13
ME U-Factor Max Field details:
0.21
ME SHGC Max Field details:
0.38
ME Total ES Options Certified Field details:
102
ME Northern Zone Options Field details:
30
ME North-Central Zone Options Field details:
72
ME Southern Zone Options Field details:
78
ME South-Central Zone Options Field details:
48
Series Name:
7700, 8400, 8800 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:
0.14
ME SHGC Min. Field details:
0.11
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.47
ME Total ES Options Certified Field details:
2,646
ME Northern Zone Options Field details:
229
ME North-Central Zone Options Field details:
318
ME Southern Zone Options Field details:
2,466
ME South-Central Zone Options Field details:
206
Series Name:
8500 Hybrid Fixed
Product Category Field details:
Window
Product Type Field details:
Picture Window
Frame Material:
Aluminum
ME U-Factor Min Field details:
0.14
ME SHGC Min. Field details:
0.15
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.48
ME Total ES Options Certified Field details:
14,674
ME Northern Zone Options Field details:
8,961
ME North-Central Zone Options Field details:
10,590
ME Southern Zone Options Field details:
7,771
ME South-Central Zone Options Field details:
4,852
Series Name:
7500 Single Hung
Product Category Field details:
Window
Product Type Field details:
Single Hung
Frame Material:
Vinyl (or other plastic)
ME U-Factor Min Field details:
0.14
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:
8,400
ME Northern Zone Options Field details:
4,307
ME North-Central Zone Options Field details:
5,581
ME Southern Zone Options Field details:
5,679
ME South-Central Zone Options Field details:
3,223
Series Name:
7500 Series Horizontal Slider
Product Category Field details:
Window
Product Type Field details:
Single Slider
Frame Material:
Vinyl (or other plastic)
ME U-Factor Min Field details:
0.14
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:
8,325
ME Northern Zone Options Field details:
4,223
ME North-Central Zone Options Field details:
5,476
ME Southern Zone Options Field details:
5,622
ME South-Central Zone Options Field details:
3,133
Series Name:
A681/691 Awning
Product Category Field details:
Window
Product Type Field details:
Awning (Projected)
Frame Material:
Vinyl (or other plastic)
ME U-Factor Min Field details:
0.14
ME SHGC Min. Field details:
0.05
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.31
ME Total ES Options Certified Field details:
29,274
ME Northern Zone Options Field details:
6,702
ME North-Central Zone Options Field details:
21,694
ME Southern Zone Options Field details:
27,252
ME South-Central Zone Options Field details:
19,672
Series Name:
Wood Clad Vinyl 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:
0.14
ME SHGC Min. Field details:
0.16
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.25
ME Total ES Options Certified Field details:
72
ME Northern Zone Options Field details:
33
ME North-Central Zone Options Field details:
60
ME Southern Zone Options Field details:
67
ME South-Central Zone Options Field details:
55
Series Name:
Ultimate Direct Glaze Narrow Frame Rectangle
Product Category Field details:
Window
Product Type Field details:
Picture Window
Frame Material:
Wood
ME U-Factor Min Field details:
0.14
ME SHGC Min. Field details:
0.17
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.49
ME Total ES Options Certified Field details:
1,980
ME Northern Zone Options Field details:
1,350
ME North-Central Zone Options Field details:
1,647
ME Southern Zone Options Field details:
918
ME South-Central Zone Options Field details:
783
Series Name:
Platinum/Diamond Low Fixed
Product Category Field details:
Window
Product Type Field details:
Picture Window
Frame Material:
Vinyl (or other plastic)
ME U-Factor Min Field details:
0.14
ME SHGC Min. Field details:
0.18
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.51
ME Total ES Options Certified Field details:
81
ME Northern Zone Options Field details:
54
ME North-Central Zone Options Field details:
52
ME Southern Zone Options Field details:
37
ME South-Central Zone Options Field details:
24
Series Name:
IGLO Energy Alucover Fixed Window
Product Category Field details:
Window
Product Type Field details:
Picture Window
Frame Material:
Aluminum
ME U-Factor Min Field details:
0.14
ME SHGC Min. Field details:
0.22
ME U-Factor Max Field details:
0.20
ME SHGC Max Field details:
0.42
ME Total ES Options Certified Field details:
10
ME Northern Zone Options Field details:
10
ME North-Central Zone Options Field details:
8
ME Southern Zone Options Field details:
1
ME South-Central Zone Options Field details:
1
Series Name:
Wood Direct Set (TF-100)
Product Category Field details:
Window
Product Type Field details:
Picture Window
Frame Material:
Wood
ME U-Factor Min Field details:
0.14
ME SHGC Min. Field details:
0.19
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.57
ME Total ES Options Certified Field details:
27
ME Northern Zone Options Field details:
20
ME North-Central Zone Options Field details:
18
ME Southern Zone Options Field details:
10
ME South-Central Zone Options Field details:
5
Series Name:
12330 Picture Window
Product Category Field details:
Window
Product Type Field details:
Picture Window
Frame Material:
Fiberglass
ME U-Factor Min Field details:
0.15
ME SHGC Min. Field details:
0.13
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.49
ME Total ES Options Certified Field details:
405
ME Northern Zone Options Field details:
321
ME North-Central Zone Options Field details:
286
ME Southern Zone Options Field details:
206
ME South-Central Zone Options Field details:
134
Series Name:
SR AWN Vinyl Awning Window
Product Category Field details:
Window
Product Type Field details:
Awning (Projected)
Frame Material:
Vinyl (or other plastic)
ME U-Factor Min Field details:
0.15
ME SHGC Min. Field details:
0.08
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.41
ME Total ES Options Certified Field details:
2,406
ME Northern Zone Options Field details:
812
ME North-Central Zone Options Field details:
1,926
ME Southern Zone Options Field details:
2,116
ME South-Central Zone Options Field details:
1,652
Series Name:
EOS\EOS+\ICON 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:
0.15
ME SHGC Min. Field details:
0.17
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.27
ME Total ES Options Certified Field details:
68
ME Northern Zone Options Field details:
39
ME North-Central Zone Options Field details:
64
ME Southern Zone Options Field details:
46
ME South-Central Zone Options Field details:
42
Series Name:
Platinum/Diamond High Fixed
Product Category Field details:
Window
Product Type Field details:
Picture Window
Frame Material:
Vinyl (or other plastic)
ME U-Factor Min Field details:
0.15
ME SHGC Min. Field details:
0.16
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.46
ME Total ES Options Certified Field details:
78
ME Northern Zone Options Field details:
43
ME North-Central Zone Options Field details:
61
ME Southern Zone Options Field details:
40
ME South-Central Zone Options Field details:
30
Series Name:
C600/C300 Fixed
Product Category Field details:
Window
Product Type Field details:
Picture Window
Frame Material:
Aluminum
ME U-Factor Min Field details:
0.15
ME SHGC Min. Field details:
0.13
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.50
ME Total ES Options Certified Field details:
1,918
ME Northern Zone Options Field details:
617
ME North-Central Zone Options Field details:
1,352
ME Southern Zone Options Field details:
1,475
ME South-Central Zone Options Field details:
956
Series Name:
SR CASE Vinyl Casement Window
Product Category Field details:
Window
Product Type Field details:
Casement Windows
Frame Material:
Vinyl (or other plastic)
ME U-Factor Min Field details:
0.15
ME SHGC Min. Field details:
0.08
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.41
ME Total ES Options Certified Field details:
4,889
ME Northern Zone Options Field details:
1,614
ME North-Central Zone Options Field details:
3,821
ME Southern Zone Options Field details:
4,318
ME South-Central Zone Options Field details:
3,282
Series Name:
PW810 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:
0.15
ME SHGC Min. Field details:
0.15
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.23
ME Total ES Options Certified Field details:
40
ME Northern Zone Options Field details:
20
ME North-Central Zone Options Field details:
32
ME Southern Zone Options Field details:
40
ME South-Central Zone Options Field details:
32