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加熱器發出的熱量完全相同，消耗的電力也完全相同，與物理尺寸或加熱元件的屬性無關。