Ac question check it out ...

NBfrost · Jul 16, 2011

HEy all I was wondering if it is possible to mount my window ac unit in the wall of my flower room ? and have the exhaust end into my laundry room ? I need to lower temps so i can put in my other 1000w hps and my hps 400w to my bud room .. im trying to figure out the pros and cons , or should i just buy a protable ac ?

hiboy · Jul 16, 2011

Your laundry room will be hot as hell with that ac exhaust pumping into it.
i dont like portables but everything has its purpose
h

RMCG · Jul 16, 2011

You will need to exhaust your laundry room.

500+cfm (min) per ton of A/C.

dese637 · Jul 16, 2011

portable is going to vent the smell....You can shoot the window unit into the attic if you have one ?

http://i560.invalid.com/albums/ss49/HUER1/DSC_0274-1.jpg

darlingmaster · Jul 16, 2011

As was said, you'll need to vent the hot air thats going to accumulate in your laundry room. Otherwise the unit will be working against itself.
Your best solution (besides a mini split) is to build a box like dese637 did.

NBfrost · Jul 16, 2011

i just bought a portable ac , a 8000 btu unit , will this be good enought to cool 2 1000w hps lights ? i am planning on buying a mini split after this run

Miggs · Jul 16, 2011

If your going to use a portable, make sure you have good venting and for a short distance. When we ran a portable I found that anything over 10' of exhaust killed the effectiveness of the unit.

krondikebar · Jul 16, 2011

you should get a mini split if you have to buy a new AC. Mine is quiet and very powerful for only being a 1 ton unit. (12k BTU)

Also lets you keep all your air if you happen to be running Co2

darlingmaster · Jul 16, 2011

NBfrost said:
i just bought a portable ac , a 8000 btu unit , will this be good enought to cool 2 1000w hps lights ? i am planning on buying a mini split after this run

Not even close. You're gonna need one MUCH bigger.

krondikebar · Jul 16, 2011

Miggs said:
If your going to use a portable, make sure you have good venting and for a short distance. When we ran a portable I found that anything over 10' of exhaust killed the effectiveness of the unit.

that must be why my portable AC started sucking after I moved it to a new location. (farther from the original exhaust point)

good to know. thanks man

krondikebar · Jul 16, 2011

NBfrost said:
i just bought a portable ac , a 8000 btu unit , will this be good enought to cool 2 1000w hps lights ? i am planning on buying a mini split after this run

How many lights are in the room you are trying to cool?

In my experience, you need 2000BTU per air cooled 1000W light. roughly 4000BTU per non air cooled 1000W light.

hope this helps

NBfrost · Jul 16, 2011

I have one 1000w mh/hps and want to hook up my other one as well .. i am in the first week of bud . I just bought a portable ac , 8000 btu from futar shop for 300 bucks .. i may add another 400 w mh to it alittle further on probally for week 5 and 6 then start scaling back to the 2 1000 for week 7 and 8 .. . I also can bring in cold nitetime air from where i live as well

RMCG · Jul 17, 2011

krondikebar said:
How many lights are in the room you are trying to cool?

In my experience, you need 2000BTU per air cooled 1000W light. roughly 4000BTU per non air cooled 1000W light.

hope this helps

2k btu per 1k for air cooled lights seems low to me...

I think its cheaper to spend the extra $$ on A/C and NOT air cool the lights. By the time you factor in fans and ducting and hassle.

darlingmaster · Jul 17, 2011

RMCG said:
2k btu per 1k for air cooled lights seems low to me...

I think its cheaper to spend the extra $$ on A/C and NOT air cool the lights. By the time you factor in fans and ducting and hassle.

Yup all around:nod

iscrog4food · Jul 17, 2011

The rule I follow is 4500 btu for non air cooled and 3500 for air cooled. Also depending on climate and room location the room itself will actually carry a few btus per square foot. Not to mention all your other stuff that generates heat ( co2 controller, air pumps, fans, dehumeys ect. Also mini splits are good to avoid exchanging room air but you have to mount the compressor indoors if you live in a cold climate because the lowest operating temp is around 0 degrees for the top of the line units. Also split systems cool more per btu rating. By that i mean a 12 k btu split will cool considerably better than a 12 k btu portable. Check out cannabis johns thread you will find all the info you need and then some! It is a great thread if you wanna delve into the nuances the hvac world!

krondikebar · Jul 17, 2011

You are right. 2000BTU per air cooled light may be a bit low.

Here is what I have going and its more than enough cooling power for my particular room.

I have 5 - 1000W HPS in RAPTORS, air cooled with an 8" fan and insulated ducting as well as a 600W Metal Halide in a wing. (non cooled)

1 - 12k BTU mini split

Also running co2 regulator (heat) 2 dehumidifier (heat x2) and ballasts outside my room. (potential heat)

darlingmaster · Jul 17, 2011

krondikebar, the big diff between your set up and the OP's is his portable VS your mini split.
Portables are thee most inefficient type of AC, arguably a mini split is the exact opposite; it's the most efficient.
A 12k btu portable will never cool as a good as an equally sized mini split.
So that 8k btu portable is gonna have a helluva time cooling 2k lights, for sure.
A little off topic but what brand mini you running?

krondikebar · Jul 17, 2011

darlingmaster said:
krondikebar, the big diff between your set up and the OP's is his portable VS your mini split.
Portables are thee most inefficient type of AC, arguably a mini split is the exact opposite; it's the most efficient.
A 12k btu portable will never cool as a good as an equally sized mini split.
So that 8k btu portable is gonna have a helluva time cooling 2k lights, for sure.
A little off topic but what brand mini you running?

Its a friedrich brand mini split. It also heats as well. It was very expensive brand new im sure. I got it from a guy on craigslist for $575. It had never been used but sat outside in the california climate for about a year

Not trying to start a fight by any means, But I have a Soleus portable Ac (8000 BTU) It was able to efficiently cool 2 air cooled raptors and 1 - 1000W hps in a wing. Ran it like that for 2 cycles.

Then I up graded to this and added some more lights.

Here is a pic I took yesterday. you can see the air handler of the mini split on the right.

Here is a shot of the outside unit. (Condenser)

NBfrost · Jul 17, 2011

that is what i need to do , i want to do this right the first time . what do u have on the other end of the lights where it drops down behind ur plants ? is that jsut filters with a can fan or the equilviant ? sorry about these questions , ive been growing out doors for years , and only have keep moms and clones inside , and ive done this very successfully , but this is a whole different bag of chips lol .. i am eventually going to get into a drip table , i am going to take some pics of my room half done tomarrow , with my plants in the first week of bud ... so maby u can check back and give me some pointers?

NBfrost · Jul 17, 2011

does your mini split come pre charged with freon or r 21 ? how does one go about that . i do not want a tech at my house

Ac question check it out ...

Ac question check it out ...

NBfrost

hiboy

RMCG

dese637

darlingmaster

NBfrost

Miggs

krondikebar

darlingmaster

krondikebar

krondikebar

NBfrost

RMCG

darlingmaster

iscrog4food

krondikebar

darlingmaster

krondikebar

NBfrost

NBfrost

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