I have the 23watts. 3 of them are in a small cab and I have a 12" cage fan and my temps are around 82. But this is in a garage that only has one vent for ac, so Im sure if it were inside the temps would be upper 70s. I am pretty sure there is a bigger bulb like 150 at lowes or home depot for 20 bucks. Thats what im going to replace my 3 23watters with. Good luck bro - Diz:rasta: