30year.GIF (684 × 468 pixels, file size: 12 KB, MIME type: image/gif)
total cost of system over 30 years. Solar thermal vs. heat pump
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 10:30, 14 December 2009 | 684 × 468 (12 KB) | Dhhemmings (talk | contribs) | total cost of system over 30 years. Solar thermal vs. heat pump |
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