家里的电热水器,究竟是一直开着省电呢。还是要用的时候再临时开烧水更省呢?第一种是不常用热水的,比如说北方秋冬。或者春秋季一两天洗一次澡的家庭,这种的最好别一直烧着,只要在用水前一个小时记得开就行了,一直空烧、保温会很浪费电。第二种就是天天都洗澡的,但是只用来 Electric water heater at home, after all, it has been driving power it. Or when it is time to use more temporary boil water it? The first is not commonly used hot water, for example, the northern autumn and winter. Or spring and autumn one or two days to wash a bath in the family, this best not to keep burning, as long as an hour before water remember to open on the line, has been burning empty, insulation will be a waste of electricity. The second is to take a bath every day, but only to