drivers and heat

How much heat does a driver actually throw?
The reason I ask is, our tent is in a spare room that really doesn't get a lot of heat. This was never an issue since my old light was HID and that really kept the tent cooking and the room comfortable.

Will a driver produce enough heat to keep the tent functional?

A led driver? It gets warm. Nothing like a hid though. I have to set my exhaust fan on a repeat cycle timer on for 2mins then off for 15 or so to keep the temps around 81. The room is usually cold...under 70. This brings other issues like humidity, which I have to control with a small dehumidifier in the tent. But it works.