Ventilation problem/question???

Hello all! I have a ventilation problem and would like some input from those more experienced then myself. I've moved recently and my new space doesn't have anywhere for filtered air to go outside. My air intake is not an issue, but I was wondering if I could recirculate the filtered air back into my room? Pretty much I have a room within a room so I would filter the air into the outer room and the intake fan would obveously push that air back into the grow room. I need help with this matter. I cant seem to find a solution that doesnt require me to cut some kinda hole in my walls. Any input would be appreciated. TY!

if you can keep the lung room cool it will work. otherwise your gonna have heat creep like crazy.

Lol im sorry. The lung room? The grow room?

For help, you need to include light wattage, type etc, fans, cfm....with sq footage of grow space....other relevant info. Chracoal filter? Ambient temp? Outer room ambient....

yeah the room your grow room is in... you are saying you pull cold air from the "lung room" through the light and looking for somewhere to exhaust it... yes your best bet would be out a window or into a attic. but if this isnt an option you can vent back into your "lung room" but eventually the heat will build up in there unless this room has cold air introduced to it, IE leaving door open to the rest of the house or turning on the AC.

1000w hps, intake fan with 200 cfm through a carbon filter, couple fans in the grow room for circulation and a couple more in the outer room for more circulation, and the grow room is 4'x5' its also winter here so I could open the windows a couple times a day to cool it down if I need to but im in the livable attic that I just reinsulated but it still doesnt hold heat too well lol. Anything else you need to know?

CC on an intake fan? 1000w is gonna be HOT for a 4x5 room....is there an adjacent room available to pull cooler air from and into the grow room? I draw my intake air from a crawl space underneath (very stealthy) and exhaust into a larger room my tent is in......200cfm vortex on each exh and int......temps are very adjustable.....

No thats my problem I dont have a place for air to come except for the room im in. if I kept a window cracked in my room would that be okay? The temps are about 10 degrees on average. Plz help im at a stop loss.

Anyone with suggestions plz respond!