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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 Electric Backup
Solar Uniform Energy Factor (SUEF):
5.9
OG-300 Number
2009033A
Solar with Gas Backup - Natural Gas
Solar Uniform Energy Factor (SUEF):
6.1
OG-300 Number
30004285
Solar with Electric Backup
Solar Uniform Energy Factor (SUEF):
4.8
OG-300 Number
2009033D
Solar with Gas Backup - Natural Gas
Solar Uniform Energy Factor (SUEF):
5.2
OG-300 Number
30004307
Solar with Electric Backup
Solar Uniform Energy Factor (SUEF):
5.4
OG-300 Number
30004358
Solar with Electric Backup
Solar Uniform Energy Factor (SUEF):
4.6
OG-300 Number
30004377
Solar with Electric Backup
Solar Uniform Energy Factor (SUEF):
3.5
OG-300 Number
2006007A
Solar with Gas Backup - Natural Gas
Solar Uniform Energy Factor (SUEF):
3.7
OG-300 Number
30004079
Solar with Gas Backup - Natural Gas
Solar Uniform Energy Factor (SUEF):
4.4
Solar with Electric Backup
Solar Uniform Energy Factor (SUEF):
3.5
OG-300 Number
30004373
Solar with Electric Backup
Solar Uniform Energy Factor (SUEF):
3.3
OG-300 Number
30004324
Solar with Electric Backup
Solar Uniform Energy Factor (SUEF):
3.3
OG-300 Number
30004318
Solar with Electric Backup
Solar Uniform Energy Factor (SUEF):
3.3
OG-300 Number
30004352
Solar with Gas Backup - Natural Gas
Solar Uniform Energy Factor (SUEF):
3.3
OG-300 Number
30004363
Solar with Gas Backup - Natural Gas
Solar Uniform Energy Factor (SUEF):
1.9
OG-300 Number
2010017C