Humidity and temp troubles

WWdankgrower420 said:

ok so I’ve got a shed. I’ve built a smaller room inside that has a window a/c unit enclosed with it to help keep temps down and humidity but now that I’m starting with flowering stage I’ve installed my 6inch Ipower fan and carbon filter and now the temps have gone up cus it’s just sucking all the cooler air out and making the a/c unit run twice as much now and humidity has spiked up to 70-75%. I was thinking of buying a speed controller for the fan cus it seems like it’s pulling way to much. Any suggestions on how you guys would handle the problem?

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Couple things...
Yes, you should get a fan speed controller. You shouldn't have to run your fan wide open at all times. If you do, you might need a larger fan. But that's not what you need. Your fan should be fine.

In order to keep your conditioned air in the room, you need to isolate your hood air from the environment air, which is how I've got mine set up. To do this, you need an air cooled hood, and a fan controller for this fan as well. I'm going to guess that you have one (air cooled hood). A lot of people set these up with the intake duct port open, which sucks the environment air out of the room. To isolate the air, you need two fans, and a port to bring in outside air to pass through the hood. This is the intended setup, and will help maintaining temps a breeze in comparison to what you're fighting right now.

Take a look at my grow room thread (link in my signature box). I've got lots of pics of my setup in there. I'm running a 1000 watt light, and I keep my canopy temps around 77, with ease.

The duct on the left draws cool air from below the house, via a port holes in the floor


The air flows through the hood



The air is drawn through the hood with this 6" fan, and is exhausted into the attic


The exhaust duct is insulated because it can get kind of warm, exhausting the hot light air. I've actually taken this off as it really wasn't warming up much at all. My setup has changed quite a bit, but this fan setup is the same.

Hope that helps

WWdankgrower420 said:

ok so I’ve got a shed. I’ve built a smaller room inside that has a window a/c unit enclosed with it to help keep temps down and humidity but now that I’m starting with flowering stage I’ve installed my 6inch Ipower fan and carbon filter and now the temps have gone up cus it’s just sucking all the cooler air out and making the a/c unit run twice as much now and humidity has spiked up to 70-75%. I was thinking of buying a speed controller for the fan cus it seems like it’s pulling way to much. Any suggestions on how you guys would handle the problem?

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JSB99 said:

Also, do you have your window ac in the shed wall, so that the ass end of the ac is outside, or do you have it mounted in the interior wall, so that the back end is still within the shed?

You need to have the back end outside in order to exhaust the heat. If it's contained within the shed, you won't be exhausting the heat correctly.

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JSB99 said:

Also, do you have your window ac in the shed wall, so that the ass end of the ac is outside, or do you have it mounted in the interior wall, so that the back end is still within the shed?

You need to have the back end outside in order to exhaust the heat. If it's contained within the shed, you won't be exhausting the heat correctly.

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WWdankgrower420 said:

Yes I’ve got my ac unit ass end out side but I’m in Florida so it’s really hot during summer so temps spike up in shed

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friedguy said:

If your exhaust fan is too strong and humidity is too high... turn down the exhaust fan and add a dehumidifier.

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WWdankgrower420 said:

Yes I’ve got my ac unit ass end out side but I’m in Florida so it’s really hot during summer so temps spike up in shed

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JSB99 said:

Something that'll help your ac work better is to put something above it outside to provide some shade. If the back end is baking in the sun, it won't be able to disappate the heat as well.

Speed controller should solve the issue you're having.

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