Quick question on venting

I am going to be using a 1000 watt hps air cooled hood. My question is how many degrees hotter will the air going through the hood be? In other words how much hotter is the air coming out of the hood than coming in?

it would all depend on fan size and the air temp at the intake and how much vent tubing your pushing through. i never measured the temps on the exhaust side of my venting, but it decreases my closet temps by 15 degrees or better when i have my fan on.

yea that's what i figured, well i plan on using the hot air coming out of the light to either heat the veg room on the other side. would anyone be able to give an assumption as to an increase in the air temp coming out of the light maybe, 25 degrees hotter 30?