If you are doing alot of heavy duty cooking.
I'd look into a vent a hood with its own fresh air system.

Outside air comes in along the front of the hood.
Blows across from front to back.
The exhaust air is pulled through grease filters at the
back of the hood.

This is what commercial kitchens have.


http://www.haltoncompany.com/solutio...s_frameset.htm


I tried my best to find some more links...
Thats the best I can do for now.
I can't seem to find anyone that shows some good picks
of what I'm talking about.