I know what you mean, I went and got a reptile heat lamp 2yrs ago. Uses 50w nice and warm but not to warm. I have 2 autocobs and p150 on veg, fan and air intake on no exhaust yet and its 77°. Got 1 autocob and flower on p150, so when it put exhaust on should be around mid 70's which in winter I'll take. I leave them on 24hrs too.