Air conditioning in sealed room help please

Hey guys I was planning on doing a 3,000w grow with no hoods completed sealed off etc. But am unsure what air conditioner to get since I know literally nothing! on them. I was thinking about buying 2 of these if these would work?

http://cgi.ebay.co.uk/BNIB-Portable-Air-Conditioning-Unit-12000-BTU-/170667490359?pt=UK_Home_Garden_Hearing_Cooling_Air&hash=item27bc933c37

I can't afford to buy the split ones they are looking around $1,000+

Plus rep for any help

Those should do. A 1000W should need around 4000 BTU in cooling. Two of those ACs should keep your temps down really well.

i agree with the above post

Thank you guys!
+ repped you both
Would I have to vent into a different room or anything?
Also was planning on using a Co2 Generator would all my co2 be vented out?

Those units need to be vented and your room will no longer be sealed. CO2 needs to be on when lights are on and air conditioner needs to be on when lights are on. Hopefully you can dump their exhaust into an area away from the grow room, otherwise the hot exhaust will be coming back into the room.

smok3y1 said:

Hey guys I was planning on doing a 3,000w grow with no hoods completed sealed off etc. But am unsure what air conditioner to get since I know literally nothing! on them.

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Ductless a/c is what you're looking for (if using co2, that is), they're not cheap.

I have an area I can dump the hot air in after I have used a carbon filter on it to get rid of any odors. Also I know the ductless ones are the ones I want but they are too expensive and can't afford one. Would the one I've mentioned from Ebay be ok running in a co2 sealed room or would all the co2 be vented out??

Little Tommy said:

Those units need to be vented and your room will no longer be sealed.

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^this.....

I wouldnt run co2 if your venting your room with a carbon filter. Ive never used co2 but i think you need to have a sealed room. no vents. Your gonna need to get a mini split that dosent need to be vented. I would just use the carbon filter in the room and not vent it just have it moving the air around.

Sorry I meant basically the air conditioner will be venting the hot air out in to a small room and in that small room will be a carbon filter. The only venting from the grow room will be from the portable air con

The short answer is that unless you are running a CO2 controller and burner that can keep up with the amount that the air conditioner will be dumping out of your room it will be an upward struggle and may not make sense. Perhaps better to use that money elsewhere in the room.

Hmm so what would you recommend?

You are most likely going to be much better off with a window type AC unit. They are much more efficient, can run nearly constant, and are generally much more effective than a comparable portable type unit you have listed above. Plus they are also generally comparatively cheaper than portables. You will need to install it in such a way where the front half is sealed in your grow room, and the rear half is hanging outside. There are threads all over this site and others detailing how to do it.
You should also take into consideration how much dehumidification you might need as this will help dictate how large of a unit you should get. If you simply install an AC now, and later need more dehumidification you may find the heat added from a dehumidifier may be too much the AC to handle. It's always a good idea to purchase a larger unit than initially required as you may add more heat generating elements and or expand the operation in the future.
I run a both hydro and soil in a 200 sq ft room with 6000w of aircooled lighting. My setup needs 25k btu to stay cool, also combating 2 dehumidifiers. Lastly, if you plan on ever running an environmental controller you are going to want a much simpler non-thermostat controlled AC unit. This way your controller can simply turn the AC on and off as needed. Many of the "fancier" units have digital controllers that reset every time the power is cut, this obviously wont work and is why a simple mechanical knob type AC unit is better if you are planning on running a controller. I run a sentinel CHHC-4 that controls both AC units masterfully.

stems&seeds said:

Many of the "fancier" units have digital controllers that reset every time the power is cut, this obviously wont work and is why a simple mechanical knob type AC unit is better if you are planning on running a controller.

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If the reset switch is in the fat 'n fancy plug, couldn't that be bypassed?

I really wanted to get the window style ones but they are way out of my budget and would cost me more then twice my budget for controlling temperature. I am not planning on having any changes done after this grow unless there is something restricting the plants growth. Am trying to make sure everything is planned out perfectly before I start so there won't be any hassle sorting it out later. I was going to buy a dehumidifier as well any recommendations for my size grow which is pretty much half yours

The reset switch acts simply as an inline breaker and usually shouldn't affect operation unless it is tripped by drawing too much power. Cycling the unit on and off with a controller should work fine, as my AC's have reset switches and I've never had a prob.
Holy shit window units certainly are expensive over on your side of the pond!! They are cheaper than comparable portable units over here! I can certainly see your wanting to use a portable. However let me warn you that the BTU ratings on the portable units are generally overly-optomistic, at least this is what I found to be the case. A window unit will outperform the same BTU size portable every time. I first tried a few portables and they break too often, and generally cant keep up with anything other than a small load. Don't say I didn't warn you. I too was dead set on portables until I spent over $1000 on shit that didn't work!!
If you are in fact dead set on a portable, than you NEED a dual hose unit. The single hose unit you have pictured will simply suck the air out of your grow room. The hoses are for air cooling, in and out, or just out in the case of a single hose unit. Simply put, the unit itself sits inside the grow environment. And 1 hose sucks outside and blows it over the AC compressor to cool it, the other hose simply exhausts the hot air outside of the grow environment. With a single hose system you will be sucking out all of your CO2.
The ducted portable units will still exchange some air with the outside, so expect some smell outside.

stems&seeds said:

The reset switch acts simply as an inline breaker and usually shouldn't affect operation unless it is tripped by drawing too much power. Cycling the unit on and off with a controller should work fine, as my AC's have reset switches and I've never had a prob.

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Thank you for replying, My ac isn't digital (knobs) but the switch in the plug does reset every now and then. Now I know what to do *pulls out razor knife*

The only reason I've ever seen mine trip is when the controller cycles the AC off then back on again without giving the compressor enough time to cool. You usually have to set the "deadband" on your controller long enough so that this does not happen.
I wouldn't necessarily recommend you remove the reset switch however. Just don't turn that thing off and back on too rapidly and you should be fine.

stems&seeds said:

The only reason I've ever seen mine trip is when the controller cycles the AC off then back on again without giving the compressor enough time to cool. You usually have to set the "deadband" on your controller long enough so that this does not happen.
I wouldn't necessarily recommend you remove the reset switch however. Just don't turn that thing off and back on too rapidly and you should be fine.

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Nah, I only use it during 12/12, lights go off, a/c goes off. Lights go on... sometimes the a/c goes on, sometimes it doesn't. Big problem, as you can imagine

I am always amazed at how much equip and pricing varies from one country to another. Lots of good info in this thread.