woman switches the boiler higher lower temperature concept saving energy |
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| navigate by keyword : adjusting boiler button caucasian control controlling electric energy equipment examining faucet forceps gas girl hand heat heater heating home hot human improvement indicator industry knob maintenance manual panel person pipe plumber pressure pump reading repairman room steam system technology temperature thermal thermostat warm water wear woman work worker wrench |
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| A woman switches the boiler to a higher or lower temperature. The concept of saving energy. |
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