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There has been a lapse in Environmental Protection Agency appropriations.  EPA intends to keep the ENERGY STAR website, tools, and resources available, however they will not be updated regularly.  If you submit a question, application, or request to EPA, it may not be processed during this period. 

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Solar Water Heaters

Visit the  Solar Water Heaters page for usage tips and buying guidelines.

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Solar with Gas Backup - Natural Gas
Solar Uniform Energy Factor (SUEF):
99.0
OG-300 Number
30004364
Solar with Electric Backup
Solar Uniform Energy Factor (SUEF):
99.0
OG-300 Number
30004376
Solar with Electric Backup
Solar Uniform Energy Factor (SUEF):
99.0
OG-300 Number
30004375
Solar with Electric Backup
Solar Uniform Energy Factor (SUEF):
99.0
OG-300 Number
2010013G
Solar with Gas Backup - Natural Gas
Solar Uniform Energy Factor (SUEF):
84.5
OG-300 Number
30004379
Solar with Gas Backup - Natural Gas
Solar Uniform Energy Factor (SUEF):
84.5
OG-300 Number
30004379
Solar with Gas Backup - Natural Gas
Solar Uniform Energy Factor (SUEF):
54.9
OG-300 Number
2010048B
Solar with Electric Backup
Solar Uniform Energy Factor (SUEF):
23.3
OG-300 Number
30004360
Solar with Gas Backup - Natural Gas
Solar Uniform Energy Factor (SUEF):
17.2
OG-300 Number
30004305
Solar with Electric Backup
Solar Uniform Energy Factor (SUEF):
12.1
OG-300 Number
30004361
Solar with Electric Backup
Solar Uniform Energy Factor (SUEF):
11.0
OG-300 Number
30004370
Solar with Electric Backup
Solar Uniform Energy Factor (SUEF):
10.7
OG-300 Number
30004351
Solar with Gas Backup - Natural Gas
Solar Uniform Energy Factor (SUEF):
9.9
OG-300 Number
2010048C
Solar with Electric Backup
Solar Uniform Energy Factor (SUEF):
9.0
OG-300 Number
30003791
Solar with Electric Backup
Solar Uniform Energy Factor (SUEF):
9.0
OG-300 Number
30003791
Solar with Gas Backup - Natural Gas
Solar Uniform Energy Factor (SUEF):
8.0
OG-300 Number
2010048A
Solar with Electric Backup
Solar Uniform Energy Factor (SUEF):
6.7
OG-300 Number
2011052D
Solar with Gas Backup - Natural Gas
Solar Uniform Energy Factor (SUEF):
6.7
OG-300 Number
30004323
Solar with Electric Backup
Solar Uniform Energy Factor (SUEF):
6.6
OG-300 Number
2001023B
Solar with Electric Backup
Solar Uniform Energy Factor (SUEF):
5.8
OG-300 Number
2006007E