energy saving efficiency icon house chart graph vector bulb class certificate building home rating classification green save |
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| navigate by keyword : appliance arrow background bar building bulb certificate chart class classification comparison concept consumption cost diagram domestic ecology efficiency efficient energetic energy environmental epc european graph heating home house icon improvement insulation label level light low machine performance power property rating save saving scale sign solar sustainable symbol vector |
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| Energy saving efficiency icon. house chart graph vector. bulb class certificate. building, home rating classification. save performance |
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