What air conditioner strenth

[Dylanfurlong]

Hi please can somebody tell me what btu strength ac I will need in my room which is 11ft x11ft and 7ft in height . I have 4 Un cooled 600w hps in there and a 2500m3 boxfan extracting the air and 2 intake fans bringing outside air in my temps go around 26oc and seem to be riseing on testing the setup. I want to add an ac but what kind will bring temps down ?

 

[Jellypowered]

600*4 = 2400w

2400w * 3.41 (a figure pulled from a paper on datacenter cooling requirements to convert wattage to a btu rating)

Just to cool the lights you need 8k btu.

I read somewhere that 600sq/ft per ton on AC (12,000 BTU)
You have approx 121sq feet, so you should only need somewhere around 20% of a ton, (2400btu) for the space itself.
Get a 10-12k BTU unit and call it good.

 

[Jellypowered]

And some more thoughts,

The 8k btu is JUST to maintain ambient temp, don't buy an 8k and expect to get cooler than outside ambient temps. You'd be best off getting 12k or bigger btu rating to have some wiggle room on the cooling side of things.

How insulated is your space? If you have crappy insulation, go bigger.

Minimum 12k btu. More if your space is little to no insulation. If you don't have insulation, and you are growing Illegally like most of us are, i'd be worried about choppers and drive by FLIR stings.

 

[chemphlegm]

too many variables. by the biggest one you can afford with the most btu's than you can install/maintain/run year round
split air, window unit

 

[Dylanfurlong]

hi I ended up getting a air cooler instead of conditioner. is this a bad idea because it takes water in a tray at the back so will it make my room mre humid with the evaporation? , it has a a/c mode or evaporation mode. it is called an air force climate control air cooler , I can not see anything on btus etc it just says 80w etc. I cannot even find it online but it says made in china for bnq stores . my normal temps with all equipment off is 17/20 oc when I turn aircooler on temp is not moving atall although I have no water in it right now? the air does feel a lot cooler than room air though.

 

[Dylanfurlong]

This is the cooler

 

[Joomby]

I think it will help but won't achieve in cooling such a large setup on its own. As for the humidity rising due to evaporation I guess it depends on how well it cools the room. Do you run cool tubes on your bulbs with one of your extraction fans ?

 

[cindysid]

No way this is going to cool that size room. I hope you didn't pay much for it. When I first started, I bought a bunch of crap I couldn't use/didn't need. Get the a/c, and not a portable. They are not efficient. I cool a 10 x 10 x 8 area with a 10kbtu window unit. It gets very hot here and it works great. I am running 2k watts of hps.

 

[cindysid]

Those units work pretty good in dry arid environments. If it is humid at all where you are it will not perform well.

 

[Dylanfurlong]

I think it will help but won't achieve in cooling such a large setup on its own. As for the humidity rising due to evaporation I guess it depends on how well it cools the room. Do you run cool tubes on your bulbs with one of your extraction fans ?

hi no i have open hps x 4 of them , today i orded a 8000 btu ac it is all i can afford at 190 price. but with the air cooler i hope it will bring down the heat even a few degrees because thats all i need as it gets to 27/28oc atm

 

[Dylanfurlong]

No way this is going to cool that size room. I hope you didn't pay much for it. When I first started, I bought a bunch of crap I couldn't use/didn't need. Get the a/c, and not a portable. They are not efficient. I cool a 10 x 10 x 8 area with a 10kbtu window unit. It gets very hot here and it works great. I am running 2k watts of hps.

the ac i just orderd is a portable 8000btu :/ the company said it is suitable for a room no bigger than 18m2 mine is 3.3 x 3.3 m2 =9.9m2? anyway along with the air cooler i have will this help bring it down slightly even

 

[Jellypowered]

If it's portable, hopefully it has dual hoses. One for intake one for exhaust. That will at least boost the efficiency some. A portable that shares a single hose for the window is counter productive and less effective.


I understand the money thing, you've got to prioritize environment though. If you can only afford a small ac, maybe run less wattage in lighting until you can afford to cool all of them.

 

[Dylanfurlong]

If it's portable, hopefully it has dual hoses. One for intake one for exhaust. That will at least boost the efficiency some. A portable that shares a single hose for the window is counter productive and less effective.


I understand the money thing, you've got to prioritize environment though. If you can only afford a small ac, maybe run less wattage in lighting until you can afford to cool all of them.

hi again i think it has one hose that needs to go outside is that anygood?

 

[Jellypowered]

hi again i think it has one hose that needs to go outside is that anygood?

All that means is it'll be less efficient. You spent 190, for around 50 more you could have had an 8k wall unit.

Good luck!

 

[Joomby]

hi again i think it has one hose that needs to go outside is that anygood?

Give it a go that's all you can do with what you have and hopefully it works. If it fails a test run just sell both units and buy a box air-con you sit in the window. You can usually get them cheap second hand. I hope it works for ya!