For all those experienced with HPS lighting, I would like to know, is there a significant difference in heat output between a 250/270W and a 400/430W HPS light?

The room is 6.5 ft. long x 7 ft. tall x 3 ft. wide (approx 137 cubic ft.) Would it be sufficient to install a 4" 148 cfm exhaust fan to control heat or would the light need to be air-cooled?

Thanks for all help.
QuantumTHC Reviewed by QuantumTHC on . HPS Heat Dynamics For all those experienced with HPS lighting, I would like to know, is there a significant difference in heat output between a 250/270W and a 400/430W HPS light? The room is 6.5 ft. long x 7 ft. tall x 3 ft. wide (approx 137 cubic ft.) Would it be sufficient to install a 4" 148 cfm exhaust fan to control heat or would the light need to be air-cooled? Thanks for all help. Rating: 5