[pugnacious]

Heres a PDF I found that gives the formulas to calculate room size and energy consumption. So if your fantasizing on a grow that needs a 5 ton ac. According to this chart it would be around 18kw.




https://www.ptsdcs.com/whitepapers/23.pdf


Im posting this so the AC/Electric gurus could verify it.

[ilovethewest]

i need to get a dehumidifier asap. portable air conditioners can get the same amount of pints per day as the dehumidifiers i was looking at, and cost about the same, but offer "12000"btu of cooling, and 65 pints/day of dehumidifiering. the room:4x6x7 master closet. running 2x600w hps lights in 2x cool sun 8in reflectors, with a vortex 750cfm cooling them. that fan first goes through a carbon scrubber, and then gets vented into the house. so with my room getting vented, and no co2, should i even think of giving my plants some cooling, or should i jsut stick to the basics of a dehumidifier? any body use a portable "vented" air con before, and if so what was your experiance? should i get one? thanks

How much m3/h I need to cool 400 w hps ??

I want to put my light 10 - 15 cm to my plant.

Thanks and sory for poor eanglish

[Coco4Coco]

Anyone build a box for their dehumid to vent the HOT exhaust that comes out...
mine heats up the room by 10 deg F?

I am not talking about putting the whole unit in a box
but just to enclose the front where the hot Exhaust comes out
and duct it out of the room...

[hydr1]

Hey guys...Im shopping for an AC unit.

my room is

9 x 15 x 7 ' I have 18000 BTU worth of ballasts and lighting.

Im running co2 so I only want to be down to 75-80 degrees...I was looking at a stand alone 12,000 but I wanted tot alk about it before I jump. I have a spot I can hang a window unit but I think it would be sketch to be running a window unit while its 30 degrees outside. I also have a 6" duct to exhaust I can vent a standalone out if I got a single hose.

Humidity shouldnt be a factor as I have a dehumy. Thanks for any input

[BUBBA LUVSPONGE]

im gonna need this thread this summer ...nice job

[Broken Gizzard]

Although the numbers are rounded and the guidelines generalized, 00420 is correct.
I have been designing/engineering/selling/project managing high-tech heat exchange systems (HVAC) for 25+ years, both dry and wet-side systems.

I am very glad to see this post, as the two most under-engineered systems in the grow room seem to always be electrical and climate control. With the mass of marketing that growers have heaped upon them by manufacturers/distributors, it is difficult to for a grower to know just which direction to turn. Remember, with mechanical equipment, 'expensive' doesn't always mean 'good', usually just 'overpriced'.

Hat Tip to this thread

[ilovethewest]

broken gizzard, stay around, ill have so many questions for you in a hot minute. i like having "professionals" around here.

[SmokinErb]

So this is an older thread, but excellent nonetheless.

Anyway, I plan on installing a window AC in my grow room. It's in a spare bedroom. Upstairs. In a place with central air. My concern is how suspicious it's going to be? The central air unit is located directly under the spare bedroom window on the 2nd floor =/

Too suspicious?

[Broken Gizzard]

Originally Posted by SmokinErb

So this is an older thread, but excellent nonetheless.

Anyway, I plan on installing a window AC in my grow room. It's in a spare bedroom. Upstairs. In a place with central air. My concern is how suspicious it's going to be? The central air unit is located directly under the spare bedroom window on the 2nd floor =/

Too suspicious?

Over the years I have designed installations for (older) homes that simply have no way of physically getting a duct to a converted attic etc... Sometimes a window AC is the only solution available...and this is also a good excuse for having it there.