Grow Gadgets 2000w Oil Filled Radiator 220-240vSimply Control Low Grow Room Temperatures up to 4m x 4m Plants are very susceptible to changes in temperature and keeping your growing environment between 24 26 degrees is important your plant health and ultimately give you better yields! When your plants are in their dark cycle, the Grow Gadgets 2000w Oil Filled Radiator 220 240v offsets the lack of heat from the lights and keeps you plants within their optimum range, especially coming into winter