Sealed room heat issue

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msprouffske

Member
I have a 12000 btu mini split ac unit with 4 1k lights. I have my lights hooked up to high cfm fans pulling fresh air through the lights and exhausting the out of the room. The lights are pretty cool to the touch and don't have an issue with them. I use co2 as well. My issue is the dehumidifier, it puts out sooooo much heat that its screwing with my temps. It appears to be raising the temps like 10-15 degrees. I'm considering attaching a duct piece to the unit and sealing that and venting it(i do need the unit to keep my RH down). I'm not sure what else to do here. I'm curious how much co2 will be lost by doing this.
 
hotrodharley

hotrodharley

Well-Known Member
msprouffske said:
I have a 12000 btu mini split ac unit with 4 1k lights. I have my lights hooked up to high cfm fans pulling fresh air through the lights and exhausting the out of the room. The lights are pretty cool to the touch and don't have an issue with them. I use co2 as well. My issue is the dehumidifier, it puts out sooooo much heat that its screwing with my temps. It appears to be raising the temps like 10-15 degrees. I'm considering attaching a duct piece to the unit and sealing that and venting it(i do need the unit to keep my RH down). I'm not sure what else to do here. I'm curious how much co2 will be lost by doing this.
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If you are running a refrigerated air unit, why are you running a dehumidifier as well? Asking because one thing AC does is decrease humidity.
 
superstoner1

superstoner1

Well-Known Member
if you vent the dehumidifier you are completely erasing its use. the warm dry air needs to go back into the room or rh will not change. maybe you have wrong size, is it too small and runs a lot? yes,ac does dehumidify but it is not its main function and you want more control of rh. only option on dehumidifier would be a water cooling setup using an automotive heater core.
 
Warlock1369

Warlock1369

Well-Known Member
hotrodharley said:
If you are running a refrigerated air unit, why are you running a dehumidifier as well? Asking because one thing AC does is decrease humidity.
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Sometimes AC can't keep up with the humidity. I have to run a dehumidifier when in flower. AC can't keep up. This is the unit I use. It dosnt send out alot of heat like my others did. But fan never stops. I also like that it has a pump and I never have to change a tank.
http://www.amazon.com/gp/aw/d/B003FJU48G
 
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msprouffske

Member
I upgraded my dehumidifier to a 70 pint thinking it would take care of things. It does run all the time, but I think the dwc is making it work a lot harder than when I grew in soil. I notice a lot of water is used up by the plants now. I also am going through a heat wave here in Washington and think that might be the largest factor. I hope when the heat goes down that my room will get down to a reasonable number.
 
VICTORYGARDENSHYDRO

VICTORYGARDENSHYDRO

New Member
the old dehu fighting the a/c problem. only solution is to upgrade the a/c to handle the additional heat from the dehu. the additional dehu from the a/c will also make the actual dehu run less.
I also run the a/c at 67/68 when the lights are off. the plants love it and it adds to the dehu of the sealed room.
 
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msprouffske

Member
The new dehumidifier I got blows out so much heat. Its like having a heater in the room. I'm wondering if I can upgrade the heat pump for my split unit or if I have to buy a whole new setup. I'm hoping once the heat outside goes down the problem will go away.
 
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msprouffske

Member
Gonna have to check on that. Just means more money I guess. I might just buy a badass one to keep up with the dwc. Maybe one of those 250 pint units.:)
 
Warlock1369

Warlock1369

Well-Known Member
I posted a link above to a $200 50pint unit. It isn't realy cool air but alot better then any other I have had. Air coming out is maybe 3-5 degrees hotter then ambient room temp. When others can roast a duck. Draw back is fan stays on.
 
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