Air Conditioning -- Do You Use It Year Round?

JohnCee

Well-Known Member
I live up in the northern part of the United States, and right now is probably the hottest point in the year for us, or at least for the next couple of weeks. I have been struggling to use my 315w bulb in my enclosed 4'x4x6' area, simply because it gets too hot in that small area, roughly 85-92F, and all of my ladies end up burning which is not good. I have been flowering 1 plant at a time under a cheap led panel simply because it's my only other light that doesn't heat the room up too much, staying between 77-79F on average with the led panel running only. There is nothing else that I can do ventilation wise, because for that small area I have a small 150-200 CFM inline fan for air intake, and a 400 CFM fan for pulling air out of the room, and a 335 CFM fan pulling air out of the light fixture, which of course all of the air is vented outside of the house as well. I have tried all different ducting and arrangements, and went through tons of foil tape trying different reconfigurations.

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I don't really have the money to go purchase an air conditioner that's appropriate for what I need, however, opening a Lowe's or Home Depot card is not out of the option. I was considering opening a card to purchase an air conditioning unit from them, however I'm not really sure which unit to go with from them within my price range. I wanted to keep the spending limit for an air conditioning unit to around $400, because I wanted to get a few other things and stop spending on the card at $500.

I have a few concerns, so hopefully someone could help me out by easing my worries about the new plans, here are the quick overviews of the hypothetical situation:

Room Size: 4'x4'x6'
Ventilation: None - Enclosed (except the air conditioner out, granted if that's needed, not sure?)
Light Fixture: Enclosed - Air Cooled

1) - If I were to line the inside of the room entirely with a white styrofoam for insulation and reflectivity, would this help the cool air stay inside of the room longer, preventing the air conditioning from running as often?

2) - What size and style of air conditioning unit should I shoot for when trying to make my purchase? Remember, I pretty much only have the options presented at Lowe's, Home Depot, or Menard's, and ideally at around $400. Also, given the restrictions of where I can make a purchase, would it just be a waste of money and time trying to get a unit from them within my price range?

3) - I am trying to calculate the cost of the energy based off watts and hours running, however, I don't really know how many hours to gauge for the air conditioner to be running. Would anyone happen to have any idea roughly how many hours out of the 12 hour cycle would the air conditioning unit be running for?

4) - For having such a small flowering room size, is having an air conditioning unit running in the fall/winter unnecessary, especially considering the fact that I live up north and my enclosed grow area is in the basement?

5) - Does anyone else have a similar scenario and setup, which requires them running an air conditioner year round?
 

JohnCee

Well-Known Member
I got a little carried away writing this thread -- let me know if it's too hard to understand!
 

sub1427

Well-Known Member
You need active air movement... Meaning fresh air coming in and stale aire going out... Your AC unit will produce a boat load of heat so you need to figure out how to vent the hot ac air out of the room...

Get on Craigslist... Save yourself the hassle and money... Can find units all the time.
 

Huckster79

Well-Known Member
I use a window shaker but built ducting for it to go outside, google it. I use a booster fan to help, and gotta use big duct or ya fry the compressor... but it can be done and i use mine 365 days a year, she runs less tho in winter for sure...
 

SouthCross

Well-Known Member
I don't know too much about evaporative cooling -- think I'd rather just shoot for an actual a/c unit.
It's also known as a swamp cooler. Uncommon up north but popular down here in dry areas. Deep west Texas, New Mexico...desert areas. The dryer the air, the better it works. Why it was recommend for the northern part of the country... IDK.
 

Rasta Roy

Well-Known Member
AC is a must for indoor growing in the summer! Get a window unit and build a box for it, lots of guides on YouTube. Something 3000 to 5000 btu will do the trick and be around 200 bucks.

Standing units are easier to set up (no box to build), but they are more expensive and don't do as effective of a job. A 3000 btu window unit will keep a room cooler than a 8000 btu standing unit.
 

Jypsy Dog

Well-Known Member
It's also known as a swamp cooler. Uncommon up north but popular down here in dry areas. Deep west Texas, New Mexico...desert areas. The dryer the air, the better it works. Why it was recommend for the northern part of the country... IDK.
Being used more and more in places like Colorado when Dew point allows.
 

JohnCee

Well-Known Member
It's also known as a swamp cooler. Uncommon up north but popular down here in dry areas. Deep west Texas, New Mexico...desert areas. The dryer the air, the better it works. Why it was recommend for the northern part of the country... IDK.
That makes a bit more sense to me, thank you for explaining that. There is quite a bit of moisture in the air up here, RH through the roof at most times, doubt a swamp cooler would be effective for me.

AC is a must for indoor growing in the summer! Get a window unit and build a box for it, lots of guides on YouTube. Something 3000 to 5000 btu will do the trick and be around 200 bucks.

Standing units are easier to set up (no box to build), but they are more expensive and don't do as effective of a job. A 3000 btu window unit will keep a room cooler than a 8000 btu standing unit.
I was not aware that the standing units, which I'm only assuming you are referring to the portable units, are inferior compared to a mounted window unit. Is there any more information in regard to this matter? I was considering a portable unit simply for the ease of installation, as I do not have a window that would hold a window a/c unit, requiring a lot of modifications or a mount/brace that I would have to construct to even hold the weight of the unit to the window.

Being used more and more in places like Colorado when Dew point allows.
I already have a lot of humidity in the air during this time of the season, don't think an evaporative cooler would work out so well for me. I'm actually quite jealous of those in the more dry areas, because these swamp coolers seem to be pretty effective in the correct environment.
 

chemphlegm

Well-Known Member
I have an ac and a dehuey year round. some months less some more. I dont ventilate the room any more than entering or leaving it.
its situated inside an outdoor steel barn, one side all foil/bubble/foil/tar paper/R30/repeat....ceiling is 11 foot and blown insulation about 2 feet thick.
I flower at night for my convenience and the break dte called to offer me. soon as my digi meters went in they were on it.
they convinced me to change that "work" cycle(commercial meter separate from house) to the midnight shift for a whopper 36% savings. More than I get just running the dryer at night or similar. I got the distinct feeling they knew exactly what was going on and wished me the best of luck too. I have a record of on/off cycles for a very long time, figured I'd start early to keep anyone from being alarmed. now my phone app tell me when my grow lights go on and off, ac/dehuey etc too. frikken wild
 

JohnCee

Well-Known Member
Do you guys think something like this from Home Depot would work well for my situation?

https://goo.gl/3t7V2Q

I figure that size air conditioning unit is larger than what I would need, which means it shouldn't be running constantly, or on high to keep my 4x4x6 room cooled down to an appropriate temperature.

Also, since it would be inside of my sealed flowering room, could I just use the basement air as my the fresh air intake for the a/c unit?

Perhaps I should look into a different direction for air conditioning?
 

ThcGuy

Well-Known Member
I can't say enough for air cooled hoods. I'm running a 1000w in a 4x4 tent in my garage. No ac or anything just a 6" inline fan sucking air out of my tent at the top and pushing that air through the hood and then outside. Fresh air is supplied via two passive 6" intakes (no fans). The temp got up to 27 degrees once when the outside temp was 36 degrees but for the most part my temps are 22-25 degrees. Also it's as simple as it gets.
 

714steadyeddie

Well-Known Member
Do you guys think something like this from Home Depot would work well for my situation?

https://goo.gl/3t7V2Q

I figure that size air conditioning unit is larger than what I would need, which means it shouldn't be running constantly, or on high to keep my 4x4x6 room cooled down to an appropriate temperature.

Also, since it would be inside of my sealed flowering room, could I just use the basement air as my the fresh air intake for the a/c unit?

Perhaps I should look into a different direction for air conditioning?
That's a good unit, if you're going portable ac make sure you get the dual hose model so you're not fighting against the ac unit, that was the only one in homedepot that has the dual hose exhaust
 

Rasta Roy

Well-Known Member
I was not aware that the standing units, which I'm only assuming you are referring to the portable units, are inferior compared to a mounted window unit. Is there any more information in regard to this matter? I was considering a portable unit simply for the ease of installation, as I do not have a window that would hold a window a/c unit, requiring a lot of modifications or a mount/brace that I would have to construct to even hold the weight of the unit to the window.
I was referring to the portable units!

Unfortunately friend the only information I have for you is my own personal experience. I've set up grow rooms with the window mounted units, and portable units. Including my personal room. I've got an LG 8000 btu portable ac, and a cheap 5000 btu window unit (maybe it was sears originally?). I tried the portable one because I was trying to save space and didn't want to deal with building a box for it to draw the heat from the back out (I also don't have a window to mount the unit in). Unfortunately the portable unit was underperforming, especially when I compared the data from my room to similar sized rooms I had constructed that used lower btu window units. So I built a box, got a 5000 used btu unit for 50 bucks on Craigslist, and now my temps are solid.
 
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NugHeuser

Well-Known Member
I just finished a grow with a pretty similar setup, in the north states, in a 5x5 tent with a 600w hps and a couple LED's, once summer hit my temps skyrocketed.. So here's my advice as it completely fixed my temp problem.

Temps were reaching 100 degrees for several days. I bought an 8000 or 9000 btu portable a/c from target for 240$. It was more than enough to cool the tent back down even on the hottest days. I had no room in my tent for the a/c though so I had to spend around 60 bucks on flexable/adjustable 3 feet of ducting and a couple duct fittings. I taped the fittings and ducting from my a/c vent to my tent vent and kept the unit sitting next to the tent. The unit had an exhaust for the hot air that is meant to go out the window (comes with a fitting). I just taped extra ducting to that exhaust duct and led it to the same room I was venting my exhaust from my tent. Kept the unit off at lights out and on the entire 12 hours of light. It runs 800watts on high, depending on the temps outside somedays I had it on low. Either way it's a definite need if temps are getting that high.
You shouldn't have to worry about temps like that during winter, spring, or fall.

Good luck man, that is what worked for me.
 

chemphlegm

Well-Known Member
I can't say enough for air cooled hoods. I'm running a 1000w in a 4x4 tent in my garage. No ac or anything just a 6" inline fan sucking air out of my tent at the top and pushing that air through the hood and then outside. Fresh air is supplied via two passive 6" intakes (no fans). The temp got up to 27 degrees once when the outside temp was 36 degrees but for the most part my temps are 22-25 degrees. Also it's as simple as it gets.
some folks live in a near perfect climate for this to work, you lucky
 

chemphlegm

Well-Known Member
those portable units have disappointed everyone I know that used them in conjunction with their marijuana garden.just saying
 
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