Air Conditioner/ Dehumidifier

Discussion in 'Grow Room Design & Setup' started by Quemado, Apr 13, 2010.

  1.  
    Quemado

    Quemado Member

    I'm in search of an ac/ dehumidifier for a 5x5 tent. RH is at 50-60%. Any suggestions?????
  2.  
    eyerguy

    eyerguy New Member

    I have built simple cooling systems for growing and when I used to work in attics a lot. Using the environment outside of your tent will help lower humidity. The humidity in your home should be 30-40%. Maybe reduce the static pressure in your cab. Negative pressure is better in your case. Using an aquarium pump and copper coil or tubing and a fan you can reduce temps by up to 10 degrees. Pumping cool water through the coil that is placed in front of the fan will amaze you at how cool it can blow. Really cold if you use ice and salt or dry ice. Alot of work but hardly any overhead.
  3.  
    Quemado

    Quemado Member

    I need a ac/dehumidifier cause my rh is getting way too high
  4.  
    Quemado

    Quemado Member

    any suggestions????
  5.  
    d.c. beard

    d.c. beard Well-Known Member

    This is what I have and it works extremely well. It's the smallest portable a/c unit made as far as I know, and that means less energy consumption. It raises the bill about $20/mo. running non-stop in the middle of the summer with the lights on 12/12.

    I have a SunHut tent which has a giant 'U'-shaped back flap that zips open, so I just push this a/c up to the back of the tent so that it blows into the tent, but draws air from outside the tent. BAM! instant intake fan as well (and the intake air is filtered). You just have to seal up around the unit good once you have it positioned to keep the cold air in and the light out.

    It cost me $400.00 plus shipping when I got it 2 years ago. They've come down some since then. Target has a pretty good model for $300.00 I saw recently. But mine has been running for 2 years non-stop and still works like the day I got it, so maybe check out Amcor? Here's mine:

    [​IMG]

    And here it is pushed up against the back of the tent like I was saying. (Kinda hard to see...)

    [​IMG]

    And here's where the exhaust ends up going (the lower hose is the a/c, the upper hose is the light):

    [​IMG]

    And finally up and out into the attic. :mrgreen:

    [​IMG]
  6.  
    Quemado

    Quemado Member

    Hey man thanks alot. Just the input i needed. With that a/c does it dehumidifiy the air??
  7.  
    d.c. beard

    d.c. beard Well-Known Member

    Shit, I forgot that that was your original problem! lol :eyesmoke:

    Hell yeah it will, you'll never have another humidity issue ever again! It constantly draws moisture out of the air.

    PS - you have to do one mod when you get it...they try to say that you can run this little clear condensation hose up into the air exhaust hose and it'll mist the dehumidifier water out into the hot exhaust tube and it'll all just magically disappear. Yeah right. Mine was dripping water back down the exhaust hose in less than an hour of running it. Plus I've heard horror stories of people going at it per the directions and ending up with some crazy mold up in their attic that caused some serious damage. So I wouldn't go this route.

    All you have to do is poke a .25" hole through the 5" (weird I know) exhaust hose that they give you and feed the condensation line through the hole so that it comes from inside the attached exhaust hose and ends up hanging outside of the whole unit instead.

    Detach the little sprayer head that's on the end of the condensation line hose. Now you have an end that's straight open for water to flow out unimpeded.

    Stick the end of the condensation line into a small wastebasket that you will keep right next to the a/c unit in the back area there. I use a white Rubbermaid waste basket and a clothes pin to hold the end of the hose dangling in the wastebasket about 3" or so. When the unit pumps the water out it'll just squirt into the trash can.

    Keep a close eye on your trash can reservoir. It can go weeks or months without outputting any water, and then in 24 hours almost fill the thing up if the conditions are extremely humid. So just check it once a day like you do everything else and you'll be just fine. I've never had mine even come close to overflowing, but I check it everyday.

    When the a/c unit DOES output water into the trash can, you can use it to water your plants and they will love it. It's basically just distilled water. I use distilled water to water my plants all the time, so for me I guess it's double-distilled! lol It'll have a low Ph around 4.0, but a super low EC as well. You'll just have to raise the Ph a good bit after adding in your nutes.

    Last, don't forget to figure out where the filters are on the thing and clean them out periodically. I rinse all my filters out between each cycle I do. If you don't your a/c unit won't be able to breathe properly and will burn out much quicker than usual. I also bought some replacement air conditioner filter media at Wal-Mart for about $0.88 and trimmed it down to size and inserted it into the tabs on the filter to beef up the filters that it has. They tell you that you can do this. All it has stock for the 2 air filters is a semi-fine mesh screen, so adding the thin black sponge filter behind it really helps. You just have to rinse it out and clean it between cycles.

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