Massmeds420
New Member
Hello everyone . I have a 315w cmh . The guy at the grow shop said it would be a lot cooler than MH . Was he just selling? Anyone use ceramic metal halide and can comment ?
Take the actual wattage draw and multiply it by 3.412142 BTU/hr.
That is the heat load that a particular light will draw.
For example, a 400w HPS with ballast probably draws about 415w total
415 x 3.412142 = 1416 BTU per hour
A 315 Ceramic runs around 360w total,
360 x 3.412142 = 1228.32 BTU per hour
So yes the CMH runs cooler, but not because of the difference in technology. It's because it requires less wattage for operation
