HVAC design for basement..HELP!

xivex

Active Member
Hi,

I have questions about HVAC design for my basement grow room we are currently in construction on...can you confirm for me that this is the correct way to do things? I want: 1) AC system with humidity controls, and 2) proper ventilation for my air cooled reflectors and properly exhausting the hot, smelly weed air out through the roof or outside of the house. So here's the deal..

In the process of setting up the grow room in the basement. Putting in a new AC unit (haven't decided on ductless but looking at the ductless mini split systems with Mitsubishi inverters -- 17,000 btus at 20 seer rating wow they say its like 5 cents an hour to run one of these). This AC will need to be just for this small basement grow room.

I also have 3 - 400w Cool Sun Air Cooled reflectors that I need a seperate ventilation setup/ducting for (apart from the AC system cooling the basement). This ventilation setup should pull fresh air through the intake, and allow me to connect 6" diameter ducting to it and run the ducting through the room across all my air cooled reflectors and exit the room at the ceiling exhaust 6" diameter opening. From the ceiling the ducting will run directly out the roof.

I am planning on using one phat filter 36" x 6" active carbon filter and only one 440 CFM EcoPlus Supreme 6" heavy output inline fan at the end my lights.

SO..my question is, is this the correct way to do ventilation? Am I conceiving it correctly? Two seperate systems, one is the AC unit on a CLOSED loop system. The other is the ventilation loop for bringing in fresh cool intake air through my air cooled lights and pushing it out the room up through the ceiling and out the roof to remove any trace of the smell. Is that the correct way to do this?

So I will need actually TWO intakes (one for AC, the other for air cooled lights ducting) and TWO exhausts (one AC return, one for air cooled lights exiting to roof).

Is that it?

Thanks in advance!

X :joint:
 

Creek

Active Member
Will you be running a sealed room with CO2? I run ac on in a sealed room to keep the room temps and humidity down. I pull the air for my cooled reflectors from outside the room and vent it out my chimney or into my house in the winter. Your AC on a closed loop is the only way to go but its almost impossible with out a water cooled AC as all acs will put out heat. You might be ok with just that inline fan as you only have 400s.

I run one of these AC units http://www.excelair.ca/stealthseries.html You can install it yourself and the codensor sits outside and puts no heat into your house.
 

xivex

Active Member
Will you be running a sealed room with CO2? I run ac on in a sealed room to keep the room temps and humidity down. I pull the air for my cooled reflectors from outside the room and vent it out my chimney or into my house in the winter. Your AC on a closed loop is the only way to go but its almost impossible with out a water cooled AC as all acs will put out heat. You might be ok with just that inline fan as you only have 400s.

I run one of these AC units http://www.excelair.ca/stealthseries.html You can install it yourself and the codensor sits outside and puts no heat into your house.
Creek,

Thanks for the response! I don't have the budget for a CO2 setup right now but plan on adding one soon. As for sealed, the room will be shut with a door and I will try to seal the door fairly well but I dont think it will be possible to seal it completely...maybe I'm just not sure how to do that? I'll look into it more.

The excel air looks nice, but might not be possible for us. We'd like to have someone like an HVAC guy install the complete system if possible...
 

Creek

Active Member
The exel you do not need an HVAC guy to install as it comes precharged it is made to be user installed. It came with really really simple instructions too. Im not even sure if you will need an ac with only 1200 watts of light. If you have enough air moving though your hoods and have a good enough air going through your room. I have no experiance with portable ACS I have only used 5 ton and up. The small ones just are not efficeint
 

xivex

Active Member
The exel you do not need an HVAC guy to install as it comes precharged it is made to be user installed. It came with really really simple instructions too. Im not even sure if you will need an ac with only 1200 watts of light. If you have enough air moving though your hoods and have a good enough air going through your room. I have no experiance with portable ACS I have only used 5 ton and up. The small ones just are not efficeint
What about this:

http://www.acfactorystore.com/airconditioning_heating/index.php?controller=product&path=19_27&product_id=17
 
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