So what should i do then with my filter? Just get a fan with a warranty cause i will always be pulling hot air out of my room. Now i have the LED instead of the HID so it shouldn't be as bad.
Just turn the fan around and push the air the other way....I take cool air from outside the room, push it through the lites and vent it.
Have the fan push the air inside your room out....and through the filter.