Need a bad ass dehumidifier

GreenhouseGreen

Well-Known Member
GrowersHouse sells factory remanufactued Quest units. I went with the Dual 105. It pulls 8.8pt/kwh. I use a Trolmaster for control so, I can't speak for the humistat. I have no complaints. If you call you may be able to lower the price, I paid $1655 for mine about a year ago.
 

V256.420

Well-Known Member
GrowersHouse sells factory remanufactued Quest units. I went with the Dual 105. It pulls 8.8pt/kwh. I use a Trolmaster for control so, I can't speak for the humistat. I have no complaints. If you call you may be able to lower the price, I paid $1655 for mine about a year ago.
My room is 12 x 15 with a few 4 x 4 tents in it. I can't run all 4 lights at the same time because it gets way too hot. I have to run 2 on and 2 off. The light off hours get 75% + humidity @ 75 to 77 degrees. This is what is killing me.
The light on hours get 60 to 65% humidity @ 82 to 84 degrees which isn't bad VPD wise.

I'm not able to get a mini split or portable due to other bullshit so that's not an option. I don't mind the humidity getting around 50% with lights on as long as I can get the humidity under 60% during lights off I'll be fine.

The only problem I can see using one of these dehumidifiers is the extra heat. One or 2 degrees wont hurt as long as it gets the water out of the room.
 

Danky clones

Well-Known Member
I noticed the quest 70 does not have a "real" humidistat. Only has a nob that has 3 settings but I guess you can find a sweet spot with trial and error. They sell a digital sensor for $260 but that defeats the savings.
Most definitely
 

ismann

Well-Known Member
The only problem I can see using one of these dehumidifiers is the extra heat. One or 2 degrees wont hurt as long as it gets the water out of the room.
The A70 model has a discharge air temperature rise of 10°F - 30°F:

That's what sucks so much about dehumidifiers. For them to be useful, you really need a huge room with an a/c. They heat up small rooms way too much. The second the a/c shuts off, humidity starts to climb which will turn the dehumidifier on, which turns the a/c on.
 

V256.420

Well-Known Member
The A70 model has a discharge air temperature rise of 10°F - 30°F:

That's what sucks so much about dehumidifiers. For them to be useful, you really need a huge room with an a/c. They heat up small rooms way too much. The second the a/c shuts off, humidity starts to climb which will turn the dehumidifier on, which turns the a/c on.
I get you. Damn that sucks. I might as well get a portable A/C if the temps will get that hot. Has the same amount of hot air exhaust.

I'm not sure what my other options are to lower the humidity while keeping the temps close to what they are now.
 

ismann

Well-Known Member
I get you. Damn that sucks. I might as well get a portable A/C if the temps will get that hot. Has the same amount of hot air exhaust.

I'm not sure what my other options are to lower the humidity while keeping the temps close to what they are now.
A window unit is the best option if you can do it. They're more efficient than portables and the condensate is completely outside. Portables are inefficient and usually shit quality anyway, plus the condensate accumulates in the room unless you can drain it outside.

Living in FL I deal with it all the time. If your grow room is small, you can't run too many lights if your a/c can't keep up or if you can't vent heat outside the room. Ducting venting through a window isn't stealthy and cutting a hole in the ceiling isn't an option for most either.

A larger room can buffer those temperature increases and having the dehumidifier makes sense in that case as they can process a large area but the heat isn't enough to significantly raise ambient temps quickly.
 

V256.420

Well-Known Member
A window unit is the best option if you can do it. They're more efficient than portables and the condensate is completely outside. Portables are inefficient and usually shit quality anyway, plus the condensate accumulates in the room unless you can drain it outside.

Living in FL I deal with it all the time. If your grow room is small, you can't run too many lights if your a/c can't keep up or if you can't vent heat outside the room. Ducting venting through a window isn't stealthy and cutting a hole in the ceiling isn't an option for most either.

A larger room can buffer those temperature increases and having the dehumidifier makes sense in that case as they can process a large area but the heat isn't enough to significantly raise ambient temps quickly.
I'm going to move the exhaust out of the grow room. I think that will solve my extra heat problem.
 
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