I find in my 2 cabinets that the MH runs "hotter" than the HPS bulb. Both are same wattage
tinytoon Reviewed by tinytoon on . Any temp difference MH vs. HPS ? I'm just curious; is there is a difference in the amount of heat generated by a Metal Halide bulb and a High Pressure Sodium bulb assuming both are of the same wattage? Rating: 5