cross-sectional diagram of a water heater with internal components: heating s, insulation layer, thermometer

electric energy household pipe tank temperature appliance boiler convenience heater home hot thermal equipment vector water control heat warming device bathroom isolated modern white boil boiling design thermodynamic lettering symbol emblem text typeset typography thermostatic burn comfortable fire graphic power pump warm comfort electrical industrial pipeline cylinder industry crosssectional diagram internal components heating elements insulation layer thermometer connection fittings