person hand and house icon with energy efficiency scale image blue bokeh background concept ecological bio energetic |
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| navigate by keyword : bar building business certificate chart class classification concept conservation construction consumption cost design diagram eco ecological ecology economic economy effective efficiency efficient electric electricity energy environment environmental graph green hand heating home house icon improvement insulation label man performance person power rating save saving sign symbol technology |
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| Person hand and house icon with energy efficiency scale image on blue bokeh background, Concept of ecological and bio energetic house. Energy class |
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