house shape and energy efficiency chart symbol isolated sky background green buildings save eco sustainability |
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| navigate by keyword : appliances architecture background blue building buildings business certificate chart class classification concept construction consumption eco ecology efficiency electricity energy environment frame furniture graph green heating home house housing insulation investment isolated model performance plan power project rating renewable renovation repair save saving service shape sky solar solution sustainability sustainable symbol technology template wood work |
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| House shape and energy efficiency chart symbol, isolated on sky background, green buildings and save energy eco sustainability |
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