YSK All 1500W heaters put out the exact same amount of heat, and consume the exact same amount of electricity, regardless of physical size, or the properties of the heating element.
from /r/YouShouldKnow
YSK所有1500W加热器发出的热量完全相同，消耗的电力也完全相同，与物理尺寸或加热元件的属性无关。