4 600watts in a 12x12 bed room

guys i am having some serious problems. has anyone sucessfully had 4 600watts in a 12x12 bedroom and kept the temp around 79-80? I can't get my temps to maintain .... at the end of their light cycle they are reaching temps up to 87!!!!!! yikes!!!!! i am running my central air through all four lamps and keep the air at 73. I just installed a 9000btu window unit in the wall. it really isn't do much at all. they still are high although the window unit hasn't made it installed though an entire light cycle. i don't know what else i can do.... except rotate the lights so they are never all on at the same time.


any ideas fellas?

One good option is cooling those lights with a big inline fan.

I own 2 an 8inch which connects after the cool central air which is ran though the lights and a four inch which is hooked up in the opposite corner where it is scrubbing the air.... obviously hooked up to a carbon filter!!!!

should i reposition them?

How many cfm is that 8"?

740 cfm..... but i am embarrased to say, I don't even know what unit of measure cfm is.

how tall is the room?

That's cubic feet per minute. I would think that should do it. You should have your hood air cooling sealed off from the room. You should pull air in from a totally different space than you're trying to climate control and also be exhausting it to a separate space.

To find the cubic feet of a room multiply length x width x height, and that is ur cubic feet of the room. Now you want ur exaust fan to move all the air in the room out, 2 to 3 times per minute for optimal coolin, hence cubic feet per minute.

Dude, you must be exhausting all wrong..make sure you have those lights SEALED!!! If your ventilating unsealed lights then your only removing half the heat.
I agree with the past posts...get a QUALITY inline fan..or if your a good fabricator make your own. AND ventilate through an outside source instead of the grow room. Besides that there should be no problem...thats a healthy amount of wattage....so you definitely have to ventilate it RIGHT..hook it up OEM baby!
Ventilation is KEY...

Yer gonna need a pretty strong fan to exaust ur space bro. Also like Tobaaaac said, u need to make sure your hoods are sealed for the air cooling to work.

well i do need to seal off those lights... I started realizing that may be a problem yesterday. So where are you thinking i hook this inline fan up at. I have some pics so you all can see my set up. it is attached to this previous thread.

I installed the window unit yesterday so no pics, however the backside of it is in the 13x13 work area loft next to the flower room.

https://www.rollitup.org/grow-room-design-setup/97656-temps-too-high-need-little.html

alright the lights are sealed off!!!! now do i need to change the placement of the 8inch inline fan? i know some of you feel i need to take air from a separate room and use the 8inch to run through the lights .....but don't i need cold air to cool those lights? i mean they are crazy hot.

right now i have the 8inch fan hooked up to a y splitter....the other half of the spliter is the air that comes from the central a/c and runs though all four lights when they meet at the y splitter they are then ran up through the attic.

I am thinking about running the chords for the amps through the wall as well so they sit in the loft on the other side of the flower room!

bro just get urself 4 cooltubes or else 4 euro reflectors, just have that sealed glass in front of those bulbs will instantly drop ur temps -7F at least. u can pick them up mad cheap at htgsupply, people in there are mad fuckin cool might cut u a little price break too. also i would set it up like this: A/C ==>Inline Fan==>Cooltubex2==>Inline Fan==>Cooltubex2==>Exhaust Vent

You are exhausting incorrectly. Why air condition air for the lamps? Use a separate circuit for your sealed lights that goes from outside to outside, you shouldn't need odor control if they are sealed. This will allow you to AC the room and keep temps low. Again. LAMP AIR SHOULD NEVER GO INTO YOUR GROW ROOM.

To go even further you could use thick insulated 8 or 6in tubing to connect them to eliminate the heat radiating out of the thin aluminum tubing.


Edit: Your problem is fan, that 8in duct booster fan (if thats what it is (500 "CFM") is not gonna do two banks of two lights AND a carbon filter, thats ridiculous. You need to invest some money in a real blower with torque to force all that air, something in the 700+ CFM range with a good amount of torque. I would expect to spend about 100.

http://www.htgsupply.com/viewproduct.asp?productID=52596

do you think it would matter if i pull 115 degree air from attic to run through the lamps?

you have your fan "pushing" air through 1 light , then the next and so on....
i tried that, no good!
when the fan is in a "pushing" position, all the seams and creases become heat leaks.
your fan should be "pulling" air through the light, that way all the seams and creases become little vaccumn's(spelling,sorry). also, each light should be getting its own cool air. i left 1 duct port open to room temp air(with a screen on it) on each light.
i moved my fan so it was sucking . put in a "Y" , ran ducting to both lights, 1 170cfm 4" fan is cooling 2 1000watt'rs, i can rest my hand on the hood, cool to the touch... my fan pushes the hot air out through a carbon filter in a window airbox. try that.

oh ya, get a good "can" type fan. 100 cfm per light is plenty if the room is in the 70's to start. you could get a 8" and "y" it twice, actually 3 times to get 4 intakes to run to each light. most of those are well over a "REAL" 500CFM.
AND YES , NO HOT AIR FROM ATTIC!! OH, 1 more thing, i installed kitchen/bathroom exhaust fans on the ceiling above each light to exhaust any hot air out of the room. Since hot air rises, mount an exhaust fan as high in the room as possible.

hers the same question side by side

speedhabit said:

You are exhausting incorrectly. Why air condition air for the lamps? Use a separate circuit for your sealed lights that goes from outside to outside, you shouldn't need odor control if they are sealed. This will allow you to AC the room and keep temps low. Again. LAMP AIR SHOULD NEVER GO INTO YOUR GROW ROOM.

To go even further you could use thick insulated 8 or 6in tubing to connect them to eliminate the heat radiating out of the thin aluminum tubing.


Edit: Your problem is fan, that 8in duct booster fan (if thats what it is (500 "CFM") is not gonna do two banks of two lights AND a carbon filter, thats ridiculous. You need to invest some money in a real blower with torque to force all that air, something in the 700+ CFM range with a good amount of torque. I would expect to spend about 100.

High Tech Garden Supply

Click to expand...

bro obviously lamp air is not what u want cycling into ur grow room, with what i suggested it wouldn't get any into the room. and the reason i said a/c line into the fans is bc thats what he had currently.. the 2 inline fans would provide enough cfm to pump it out as well as the a/c adding a temp drop though the reflectors which again will lower temps. he also said he had a window a/c unit.. crank that shit and temps will be easily below 75F.

alright i hate my life guys.... yesterday sucked but i am close to finished. here what i decided to do. my only option was to take air from attic and send air back into the attic. now my attic is vented to the outdoors..... i live in an area where the climate is 110 daily in summer. But i am taking from the attic and using an 740 cfm eco inline fan to push ( guess i got your message too late halzy) air though the lights and into another area of the attic. however the movement of the air accross the light looks like it will do the trick!!!! yeah!!!!! i will kick the lights on towards the evening so the air running into the lights is cool. this is perfect hopefully the air cracks in the lights are sealed off enough!!!!!

i'll get picks up soon thanks a ton!!!!

still went back and changed it. if there is A/c to that room, add a "vent booster" to a/c register, this will kepl pull more cool air from your a/c duct into the room itself. once you have cool air coming into the room, youll be ok as long as you exhaust it right. make sure to have cool air to each light individually( leave 1 side of hood open to pull air from the room, this actuall pulls the warmer air from around the outside of the light"). This can also be your exhaust sytem too. But i do recomend a exhaust fan placed as high as possible in the room, mine are directly above the lights. home depot has kitchen/bathroom exhaust fans for $25, they have there own little flapper valve built in so when 1 is running and the other is not, the hot air doesnt just blow back threw 1 or the other. my room is staying at 72f. 76 under the 1000w lights. 2 x 1000w lights in a 8x11 room in 110f. norcal heat, over a 100 the last few days with more to come...

smokim peace pipe