heating thermostat valve set to number 3 icon, for saving money at heating costs or medium temperature setting

adjust adjusting background balanced blurred budget central close closeup cold comfort control copyspace cost costs domestic down economizing economy efficiency energy expense finance fossil freeze freezing function heat heater heating home house household icon incidental increase industry knob medium metal middle number plastic power price radiator reduce regulator rental room save saving savings set setting smart sunny switched symbol temperature thermostat three top turned turning utilities valve view warm warmth white winter yellow