Ventilation System Problems?

I need to figure ot a way to get fresh air in to my closet. I cant use a window so I planned on cutting a hole in the wall and bring in fresh air directly fom outside but th problem is temp. wont be stable ... in he winter the air will be freezing and in the summer it will be hot. I thought abou bringing it in from my room bt I smoke ciggertes and weed in there and I dont know how uch fresh air it ill actualy be providing. Other option would be cut a hole in the floorand take it from the basement wich would provide a stable source of 70 degree air but will that provide fresh air and co2? And alt of weed and ciggertes are smoked in the basement aswell.

Any suggestions?

Heres the sytem....

-EXHUAST-

Materials:

4â?� Sun System Air Cooled Hood
SunGro Reflector by Sunlight Supply | Grow Light Reflectors & Fittings

Fantech FX4 Centrifugal Fan - 117 cfm
Fantech FX4 Centrifugal Fan - 117 cfm | Exhaust Fans & Circulators

4â?� Carbon Filter
Dutch Breeze Carbon Air Filter - DFS2 | Air Cleaners/Odor Control

4â?� Backdraft Damper
4" Backdraft Damper | Fan Accessories

Description:
Air cooled hood sucks air from grow room and over the hood and in to a carbon filter by a muffin fan that blows everything in to the attic and has a damper to keep out pests when fan is shut off



-INTAKE-

Materials:

Fantech FX4 Centrifugal Fan - 117 cfm
Fantech FX4 Centrifugal Fan - 117 cfm | Exhaust Fans & Circulators

4â?� HEPA Filter
Organic HEPA Air Intake Filter - 4" | Fan Accessories

4â?� Backdraft Damper
4" Backdraft Damper | Fan Accessories

Description:
Muffin fan sucks air from outside the house through a damper and a HEPA filter and in to the grow room for fresh Co2

Problems:
Temperature isnt going to be very stable if I use the outside air as the intake â?¦ during the winter its going to be bringing freezing cold air and in the summer its going to be bringing in very hot air. I need a source of fresh air with a stable temperaure and I cant think of anywere to intake air from

I recommend going with the 6"-diameter hoods and ductwork ... have your intake placed near the floor, where cooler air lies ... much better to draw the intake from your basement, screen it, for insect protection ... :smokin:

Only reason for 4" is becuase the closet is only 70 cubit feet ... even with the carbon filter, hood, duct muffler and damper I still can change the entire volume of the room in 1 minute. Plus I dont have to deal with cutting big holes incase I need to patch it up later down the road.

the idea of taking the intake from the basement didnt come to me till I actually went to post my ventilation problem but after thinking it over I think its the best way to go.

I'll just slap on a filter sock and a damper and pull it right through the floor. I'm going to have to take a hole saw to the hard wood floor though :(

I think I'm going to buy some co2 test kits to check the levels in the basement ... co2 sinks so there should be plenty and if the basement gets to cold in the winter I can just unhook the duct from the hood to gain some heat from my 400w HPS

I'm just gunna have to stop having people fish bowl the basement with weed and stoges becuase im pretty sure smokey air aint gunna halp my plants. Maybe slapping on a HEPA filter would help but there 85.00