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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:
Ultimate Wood Direct Glaze Round Top
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:
0.17
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.49
ME Total ES Options Certified Field details:
1,742
ME Northern Zone Options Field details:
414
ME North-Central Zone Options Field details:
498
ME Southern Zone Options Field details:
1,430
ME South-Central Zone Options Field details:
246
Series Name:
7580 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:
0.17
ME U-Factor Max Field details:
0.16
ME SHGC Max Field details:
0.24
ME Total ES Options Certified Field details:
36
ME Northern Zone Options Field details:
24
ME North-Central Zone Options Field details:
36
ME Southern Zone Options Field details:
28
ME South-Central Zone Options Field details:
28
Series Name:
Ultimate Wood Direct Glaze Rectangle / Polygon
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:
0.16
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.47
ME Total ES Options Certified Field details:
2,710
ME Northern Zone Options Field details:
812
ME North-Central Zone Options Field details:
1,036
ME Southern Zone Options Field details:
2,194
ME South-Central Zone Options Field details:
624
Series Name:
8541T2 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:
0.10
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.45
ME Total ES Options Certified Field details:
6,069
ME Northern Zone Options Field details:
1,246
ME North-Central Zone Options Field details:
1,569
ME Southern Zone Options Field details:
5,581
ME South-Central Zone Options Field details:
1,148
Series Name:
ComfortSmart/ecoSmart - Special Shapes Fixed 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:
0.15
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.53
ME Total ES Options Certified Field details:
4,011
ME Northern Zone Options Field details:
1,524
ME North-Central Zone Options Field details:
1,645
ME Southern Zone Options Field details:
3,052
ME South-Central Zone Options Field details:
1,143
Series Name:
Axio Direct Set Fixed 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:
0.46
ME Total ES Options Certified Field details:
483
ME Northern Zone Options Field details:
301
ME North-Central Zone Options Field details:
363
ME Southern Zone Options Field details:
248
ME South-Central Zone Options Field details:
220
Series Name:
9660-9770 Polyvinyl Chloride (PVC) Fixed (Sash Set) 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:
0.08
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.45
ME Total ES Options Certified Field details:
2,322
ME Northern Zone Options Field details:
446
ME North-Central Zone Options Field details:
1,166
ME Southern Zone Options Field details:
2,056
ME South-Central Zone Options Field details:
960
Series Name:
CPWL Casement Picture Window Low Profile
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:
0.18
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.30
ME Total ES Options Certified Field details:
374
ME Northern Zone Options Field details:
240
ME North-Central Zone Options Field details:
320
ME Southern Zone Options Field details:
218
ME South-Central Zone Options Field details:
164
Series Name:
Ultra XL Casement Picture
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:
735
ME Northern Zone Options Field details:
303
ME North-Central Zone Options Field details:
694
ME Southern Zone Options Field details:
557
ME South-Central Zone Options Field details:
543
Series Name:
EU 76 Septem 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:
0.15
ME U-Factor Max Field details:
0.21
ME SHGC Max Field details:
0.45
ME Total ES Options Certified Field details:
96
ME Northern Zone Options Field details:
48
ME North-Central Zone Options Field details:
60
ME Southern Zone Options Field details:
66
ME South-Central Zone Options Field details:
42
Series Name:
1071 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:
0.17
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.61
ME Total ES Options Certified Field details:
110
ME Northern Zone Options Field details:
88
ME North-Central Zone Options Field details:
60
ME Southern Zone Options Field details:
54
ME South-Central Zone Options Field details:
41
Series Name:
PW5420/5520
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:
0.49
ME Total ES Options Certified Field details:
277
ME Northern Zone Options Field details:
88
ME North-Central Zone Options Field details:
121
ME Southern Zone Options Field details:
221
ME South-Central Zone Options Field details:
79
Series Name:
A680 Fixed Sash
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:
0.05
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.37
ME Total ES Options Certified Field details:
16,086
ME Northern Zone Options Field details:
7,459
ME North-Central Zone Options Field details:
14,391
ME Southern Zone Options Field details:
11,835
ME South-Central Zone Options Field details:
10,140
Series Name:
Vinyl 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:
0.28
ME Total ES Options Certified Field details:
140
ME Northern Zone Options Field details:
69
ME North-Central Zone Options Field details:
106
ME Southern Zone Options Field details:
105
ME South-Central Zone Options Field details:
71
Series Name:
Ultimate Wood Double Hung / Single Hung
Product Category Field details:
Window
Product Type Field details:
Double Hung
Frame Material:
Wood
ME U-Factor Min Field details:
0.13
ME SHGC Min. Field details:
0.13
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.41
ME Total ES Options Certified Field details:
744
ME Northern Zone Options Field details:
403
ME North-Central Zone Options Field details:
656
ME Southern Zone Options Field details:
511
ME South-Central Zone Options Field details:
427
Series Name:
100 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:
0.13
ME SHGC Min. Field details:
0.15
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.30
ME Total ES Options Certified Field details:
73
ME Northern Zone Options Field details:
47
ME North-Central Zone Options Field details:
64
ME Southern Zone Options Field details:
54
ME South-Central Zone Options Field details:
45
Series Name:
Ultimate Wood Double Hung / Single Hung Magnum
Product Category Field details:
Window
Product Type Field details:
Double Hung
Frame Material:
Wood
ME U-Factor Min Field details:
0.13
ME SHGC Min. Field details:
0.13
ME U-Factor Max Field details:
0.22
ME SHGC Max Field details:
0.41
ME Total ES Options Certified Field details:
671
ME Northern Zone Options Field details:
369
ME North-Central Zone Options Field details:
587
ME Southern Zone Options Field details:
455
ME South-Central Zone Options Field details:
375
Series Name:
TG/NW3/Destiny/DuraTrust/Clarion 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:
0.25
ME U-Factor Max Field details:
0.20
ME SHGC Max Field details:
0.38
ME Total ES Options Certified Field details:
19
ME Northern Zone Options Field details:
19
ME North-Central Zone Options Field details:
19
ME Southern Zone Options Field details:
0
ME South-Central Zone Options Field details:
0
Series Name:
8605/3205 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:
0.36
ME Total ES Options Certified Field details:
1,534
ME Northern Zone Options Field details:
922
ME North-Central Zone Options Field details:
1,342
ME Southern Zone Options Field details:
1,102
ME South-Central Zone Options Field details:
910
Series Name:
8605/3205 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:
0.36
ME Total ES Options Certified Field details:
1,534
ME Northern Zone Options Field details:
922
ME North-Central Zone Options Field details:
1,342
ME Southern Zone Options Field details:
1,102
ME South-Central Zone Options Field details:
910