Anyone have experience with these type of dehumidifiers? My dehumidifier struggles to get below 45% during late flower when I drop my night temps to 63’f. Apparently these units are more common in the uk where they get cold temps along with humidity.
https://www.sylvane.com/ecor-pro-epd200pro-dryfan-200-pint-stainless-steel-desiccant-dehumidifier.html
This efficient, rugged desiccant dehumidifier removes 74 pints per day at AHAM and up to 95 pints per day at saturation–equivalent to a 200-pint, less efficient, refrigerant/compressor dehumidifier.
These units work without a compressor and function by collecting humidity with desiccant which is then heated, exhausting moist air out of your grow area. This results in a dehumidifier that runs without producing condensate and doesn’t require plumbing. Since the unit functions without a compressor they can function as low as -4’f. These units also well at low humidity levels, whereas compressor units struggle to get below 40% a desiccant dryer can deliver extreme environmental control as low as 1%RH.
Example diagram
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They are used in med to large greenhouse applications. I have seen several and they work well, especially when you want low humidity at low (relative) temp. Oh did I mention they are huge, like 10+ feet for the larger units.
They work amazingly well, but can be expensive to maintain.. this is what ISO clean rooms use in pharma.
@Roguelab
Pretty much nails what you were looking for, no?
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Not a direct solution but it can help. These work by taking in 15% of outside air and pushing out 15% of inside air, they dont really work in a closed environment. U will still need a place the air is taken from to help the system work, so u will still need a dry tank/room for the air to be sucked out of.
With that being said, i use these all the time during the winter months, place my compressor dehu in my “dry room” and then suck air from that to the dessicant dehu in another room i need more dry, so its always being fed dry air to dispel out the wet air.
I first started using it as a secondary dry room for mushrooms. Compressor based dehus would do 80% of drying then moved the mushies to the dessicant dehu to get it down to <5% rh.
One reallt good benefit of dessicant dehus is the lack of build up heat in the room, they dont really increase the temp in the room like a compressor dehu does, because it shoots all of its “hot” air outside of the room. It also works when temperatures are really low, so u can theoretically dry a cold room if u wanted. A compressor dehu would struggle with that task
TLDR: highly recommended, fun toy
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