Grow Room Design & Setup
Air Conditioner and CO2 in the
The Grow Room forums; Sorry if this is a stupid question, im just helping a friend upgrade her grow room and theres something im ...
Air Conditioner and CO2
Sorry if this is a stupid question, im just helping a friend upgrade her grow room and theres something im confused about.
Shes got a co2 injection system (she uses 20 gallon tanks), and wants to install a window air conditioner in the room. She sais it will help her get the most from her co2, because the air conditioner will help control the temperatures, meaning she wont have to run her exhaust fans as often.
But doesnt a window AC also remove air from the room? I was under the assumption that it does, and that running it would also remove co2 from the room.
Ya most of them remove air and co2. some units have a damper on them to set for vent or recirculate. i just let my room get hot when i run co2, it works better around 85F. just blast em up to 1500 ppm,takes me 6 mins. then let em bake for as long as you can without letting your room get too hot. then fire up your ac.
Yea, thats what I was thinking.
Originally Posted by sixstring2112
actually, it depends on the type of airconditioner. i'm more familiar with portable ac's than window, but in the portable world there are "one hose" and "two hose" systems - the two hose systems have an intake that brings in air from the outside, passes through the ac and then out the other hose. the one hose systems draw in room air and split it into two streams, one that gets cooled and returned to the room and one that passes through the unit and out the single hose.
I thought window air units used the outside air to "cool off" the compressor and the inside air was reprocessed thru the cold fins and cooled the room in this way. So window units should be fine to use 24/7. They might take a small amount of room air out but not much to make a difference. I am not an A/C guy so I'm not completely positive. Try to get a sure answer from a real A/C guy about window units.
The Rat gave you good advice on portables. Single hose units use room air to cool the compressor. They really are not very efficient at all because of this exact reason. They cool off the room air but at the same time they use that same cooled air to cool its compressor and exhaust outside thus the efficiency issue.
A dual hose portable, if made well, can act like a window unit. They have they capability to suck in air from another room/area to cool the compressor thru the use of one hose and then expel the hot air out thru the other hose. Now the air that has been cooled off when the A/C is running will stay in the room and not get sucked out cooling off the compressor. This is not 100% foolproof tho. Portables are not made very well and some air will still get sucked in from the surrounding area. So this makes it impossible to put in a tent because eventually you will suck your whole tent in.
I think I have finally found the answer tho. Mini-splits.
The prices have come down so much now that they are hard to beat. Simple to install and easy to use. They blow away window A/C's and portables. They do exactly what a central A/C does without the duct work. Look into these. The compressor stays outside and uses the outside air to "cool" itself off. The inside unit cools the air and does not exhaust any room air. These things are the bomb. If you can get one just go for it.
Last edited by Hotwired; 05-01-2010 at 07:29 PM.
How much heat would a 12,000 BTU Mini-Split be able to
handle, you think 4 ducted 600's in a 8x8 space?
here's an ac calculator http://www.consumerreports.org/cro/a...heet/index.htm that sizes a/c by all relevant criteria including wattage of appliances in the room.
Easily, but I'd go with the 15.5k or 18k.
Originally Posted by Shrubs First
I think four 600 watt lights will put out about 2000 to 2500 btu each. So maybe 8000 to 10,000 btu total.
Hmm, mini split air conditioner seems to be the way to go. Alot of cash though, still, seems like a smart investment.
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