AC power vs hps heat

I

IngFarmer

Active member

• Sep 2, 2017

• #1

I am setting up a sealed room and I'm really not sure if a domestic ac can handle all the heat produced by multiple hps...
so the question is, can a domestic multisplit ac of freezing power 9000BTU or 12000BTU keep cool a room to a temp of about 27-28 degree celsius containing about 8 to 9 of 600 watt hps bulbs?

 

armedoldhippy

Well-known member

Veteran

• Sep 2, 2017

• #2

if you have the lights linked with thru-flow ducting venting that hot air outside, it should not be a problem, i don't think. if you have open bulb set-ups w/no venting. i'm not so positive. someone with more definitive knowledge is bound to show up...

 

I

IngFarmer

Active member

• Sep 2, 2017

• #3

Unfortunately there will be no venting of anytype for now, the idea is to use the hps for a grow or two and quickly start switching to led panels...
Or I can cool tube all the hps bulbs and vent some heat outside whilst the ac cools the room, but soon led panels will come in soo there will be no venting, so I need to know the power needed to cool such a room assuming there are 9 hps 600 watt bulbs with no venting of anytime...

 

weedtoker

Well-known member

Veteran

• Sep 2, 2017

• #4

Depends on where you live but assume no, before doing the math, depending where ya live. there was a calculator for that somewhere (hint there's mora around the web)... oh here it is: https://www.icmag.com/ic/showthread.php?t=95259

cheers, and stay safe

 

I

IngFarmer

Active member

• Sep 2, 2017

• #5

weedtoker said:

Depends on where you live but assume no, before doing the math, depending where ya live. there was a calculator for that somewhere (hint there's mora around the web)... oh here it is: https://www.icmag.com/ic/showthread.php?t=95259

cheers, and stay safe

Click to expand...

thanks man

 

tleaf jr.

Came up off 75w

Veteran

• Sep 2, 2017

• #6

5000 btus of cooling per 1000w

 

G

GonjaLove

Member

• Sep 9, 2017

• #7

I run 4K hps with a 15k btu ac and most of the year it does the job. Middle of summer not so much my temps will go to around 85 in summer. I can't see a 9k or even a 12k keeping your room cool.

 

H

HHULKK

Member

• Sep 11, 2017

• #8

24000 btu to be safe for that

 

Mikell

Dipshit Know-Nothing

ICMag Donor

Veteran

• Sep 11, 2017

• #9

Ehh you would need a proper heat load calculation few can do.

Undersize and you dry out the room, oversize and you're short cycling the AC. I would plan to handle 30kbtu. A burner (if used) and DH produce significant load.

 

B

brown_thumb

Active member

• Sep 11, 2017

• #10

I prefer redundancies so I'd probably opt for two smaller units with one set 3-4 degrees (F) warmer than the other. If one unit can't cool the room then the other will kick in. If one unit fails then you still have another to continue cooling while the other is repaired or replaced. Two 9K BTU would be the minimum I'd opt for in my area and with your lighting... 105F and sunny here, during summertime. I'd probably opt for two 12K BTU just to be safe. Not only will having a second unit provide cooling if the other fails but it's more efficient in cooler months because only one smaller unit will be running.