indoor but outdoor grow

Hello RIU community and happy
thanksgiving!!
So while cooking today I had a brilliant idea to
design a grow room under my back deck.
the measurements of the room i plan on
constructing ar 6x 6x6 -7 .
the ground to deck clearance is actualy only 3. 5
feet so i plan on digging down about 3 feet
underground to make the height a little bit less
of an issue.
for the air intake i actualy have a dryer vent
flowing rite into the future room. I plan on
putting a T on the inside of my house hooked up
to the dryer ducting, so the airflow is a little
better with a backdraft damper on also so the
smell wont flow back in the house.
For the air exiting the room i plan on just
venting it under my porch. now i could buy a
carbon filter but im thinking if venting the air
underground or making a little container or
enclosure of activated carbon would work
better?? any ideas ??
for the lights im going to be using a 400 watt
and a 600 watt with open air hoods so it will
help out the heating of the room a little bit. but
im still very concerned about the heating-
humidity of the room since the winter months
are aproaching fast!
so my questions are as followed. .
1. how can i heat my room short of putting a
space heater in there?? maybe heat lamps... or?
2. is humidity going to be a problem with all the
snow and if so how do you suggest controlling
it??
3. is this idea even viable!?!
have a happy thanksgiving and enjoy all of your
baking and eating

dnt c why u couldnt make it work humidity is a bitch get a dehumidifier.....are u planning on running dryer exhaust into the room kinda confused???

Wow too many variables to even guess. Concept of under a deck is great and the earth is the best insulation, but have to consider access and working area in this space.
Don't use a dryer exhaust for a intake, you will use the dryer and that will be your room intake while it runs which will ruin humidity control.
Depending upon where you live north or south latitude, or wet or arid, will have a lot to do with conditioning, construction, & the bugs you'll have to deal with.