question about dehumidifiers

Bigdaddy76

Well-Known Member
well ill prolly roll the dice with a 70 or 100 pint dehu and if its too small ill sell it online used and get a larger one lol. your right appliances just dont last anymore i have a beer fridge that was manufactured in 1947 just after the war and it still is running on the original hermetically sealed compressor its built like a tank id be happy to pay a premium for appliances if i knew they would last oh well throw away society these days
100 minimum!
 

Bigdaddy76

Well-Known Member
It's all about bearing quality. As you pointed out with your beer fridge, we humans have long known how to make quality bearings that will last nearly forever. The Germans currently make the best bearings out there but they aren't cheap. Unfortunately most modern appliances are built with bearings made in China or India. I saw a demonstration once where two bearings of the same size and type, when spun up with compressed air the high quality bearing would just keep spinning long after the other one stopped. Friction is the enemy of bearings and the cheap bearing had plenty of friction lol.
I take it you’re liking the one you got a bit ago.
 

xox

Well-Known Member
I have a sealed room that’s 8x16 and a 110 pint struggles sometimes. Also you need one with a pump, so you don’t need to empty it all the time. Trust me, don’t cheap out on it and make sure it has a pump! Only way one from Lowe’s or Home Depot will work is, if you special order it. The $300 ones, they have in the store, wont make you happy! Bud rot or WPM isn’t fun!

i think i got it, the bigger the better, dont be cheap, buy the big one make sure it has a pump this forum is great :blsmoke:
 

Renfro

Well-Known Member
make sure it has a pump
You mentioned a sump pit? I think you can use a gravity drain if you have a sump pit. If the run is longish just use a larger diameter hose to prevent gunk from the condensate clogging the tube. I have a portable AC in my veg room and it has a line to the sump pit that is 1/2 inch about 15 feet long and it works fine.
 

its.always.420

Well-Known Member
santa fe comes out of the same factory as quest (thermastor) if you don't want to pay cannatax

i run an advance 90 and it kicks ass, quest 105's little brother
 

xox

Well-Known Member
You mentioned a sump pit? I think you can use a gravity drain if you have a sump pit. If the run is longish just use a larger diameter hose to prevent gunk from the condensate clogging the tube. I have a portable AC in my veg room and it has a line to the sump pit that is 1/2 inch about 15 feet long and it works fine.
yes i did, i planned on having a sump pit right outside the door of the grow room, i havent wired the outlet on the ceiling yet however i was planning on putting the dehumidifier on a shelf off the ground so it wouldnt be in my way. the sump pit is about 3 feet away from the dehumidifier. im also running the mini splits condensate line to the sump pit as well i think it should work well. i will eventually post some photos of the build i have a couple hours of framing left to do i have to put up one more sheet of drywall so that my gas guy can come put in the T in for my natural gas co2 generator then i'll be doing all the wiring of the outlets and insulating.
 

Renfro

Well-Known Member
don’t cheap out on it and make sure it has a pump!
I like the pumps, when needed. Otherwise it's just another part to fail. I have one commercial grade dehu that has a lot of hours on it and the condensate pump quit and one day I came into the room with water all over the floor from it overflowing. So if gravity drain is an option, thats the way to go. I have a sump pit and I just plumbed the dehu directly skipping the condensate pump which is what I should have done in the beginning. I believe the OP said he does have a sump pit so unless the distance is far I would pass on the condensate pump and just run some 3/4" to the sump pit.

The OP also mentioned installing the dehumidifier up high. thats preferable because it will be able to pull more moisture from the warmer air up high and it will allow for better gravity drainage.
 
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Renfro

Well-Known Member
havent wired the outlet on the ceiling yet however i was planning on putting the dehumidifier on a shelf off the ground so it wouldnt be in my way.
If it's an option I always provide a dedicated circuit for dehumidifiers and other higher amperage refrigeration like chillers, portable AC's. For 120 volt circuits I never bother with a 15 amp circuit in grows, run everything in 12 gauge and use commercial grade 20 amp receptacles. Those commercial grade receptacles just feel better, when you plug in a cord it's snug. It's not like you need a ton of receptacles so why not do them all nice. Color coding by circuit can also be handy. Just visually at a glance know what circuit a non dedicated receptacle is on.
 

Bigdaddy76

Well-Known Member
If it's an option I always provide a dedicated circuit for dehumidifiers and other higher amperage refrigeration like chillers, portable AC's. For 120 volt circuits I never bother with a 15 amp circuit in grows, run everything in 12 gauge and use commercial grade 20 amp receptacles. Those commercial grade receptacles just feel better, when you plug in a cord it's snug. It's not like you need a ton of receptacles so why not do them all nice. Color coding by circuit can also be handy. Just visually at a glance know what circuit a non dedicated receptacle is on.
You don’t exactly have the average, run of the mill breaker box either! Your set up is more so a commercial set up, at your house. You also basically have best humidifier money can buy. I’m going to eventually get one of those dehumidifiers. $1500-$2200 isn’t chump change.
 

xox

Well-Known Member
If it's an option I always provide a dedicated circuit for dehumidifiers and other higher amperage refrigeration like chillers, portable AC's. For 120 volt circuits I never bother with a 15 amp circuit in grows, run everything in 12 gauge and use commercial grade 20 amp receptacles. Those commercial grade receptacles just feel better, when you plug in a cord it's snug. It's not like you need a ton of receptacles so why not do them all nice. Color coding by circuit can also be handy. Just visually at a glance know what circuit a non dedicated receptacle is on.
yes this thought has crossed my mind, i may do this in the future if i do indeed need such a large dehumidifier. if that is needed ill just surface mount a shielded wire for the recepticle in the future. the dedicated 15 amp circuit was pre existing befor the renovation so i figured why not use it since i wont need an electrician again to connect anything to the panel for me. as for the actual receptacles they are the ones with the little plastic doors inside the slots for the plugs they kinda click when you plug something in im pretty sure those are standard now im not much of an electrician though im a licensed carpenter however. the plugs look like this.
image.jpg
 

xox

Well-Known Member
I like the pumps, when needed. Otherwise it's just another part to fail. I have one commercial grade dehu that has a lot of hours on it and the condensate pump quit and one day I came into the room with water all over the floor from it overflowing. So if gravity drain is an option, thats the way to go. I have a sump pit and I just plumbed the dehu directly skipping the condensate pump which is what I should have done in the beginning. I believe the OP said he does have a sump pit so unless the distance is far I would pass on the condensate pump and just run some 3/4" to the sump pit.

The OP also mentioned installing the dehumidifier up high. thats preferable because it will be able to pull more moisture from the warmer air up high and it will allow for better gravity drainage.
yes this is exactly what i intend to do
 

ANC

Well-Known Member
I'd rather have two than one big one, drill a hole and run a pipe outside, any bin or reservoir is going to be overfilled at some point, it is just a matter of when.
 

Bignutes

Well-Known Member
well ill prolly roll the dice with a 70 or 100 pint dehu and if its too small ill sell it online used and get a larger one lol. your right appliances just dont last anymore i have a beer fridge that was manufactured in 1947 just after the war and it still is running on the original hermetically sealed compressor its built like a tank id be happy to pay a premium for appliances if i knew they would last oh well throw away society these days
Your good with a 70 pint hands down. I ran a 30 pint with basement at 65% rh ambient and it was on all the time best it did was 55%, after lights out rh would spike to 80%. That was with fabric 10 gal, your fan placement will change your results dramatically in conjunction with canopy height, short plants high rh. I needed a 50 pint, but two 30's would have been ideal. This is for home type, as @Renfro points out they'll shit the bed.
 

xIPhobiaIx

Active Member
I have a 10x25x9 grow room with 12 plants and 6 x 1000w Gavitas, sealed and well insulated with panda film as the reflective material.
Live in Michigan so a zone 5 climate and natural humidity (getting to spring currently) typically isn't an issue.

Trying to size a dehu but the calcs online are saying for 10% runoff and 97% plant expiration if you feed your plants .5 gallons each every day than I would need 42 pint dehu but if watering 1.5g per plant per day would need 126g dehu. Obviously with Co2 I am looking for temps to be between 85-90 and proper humidity.

Would this work or am I missing something key here?

 

BurnzAU

Well-Known Member
I have a 10x25x9 grow room with 12 plants and 6 x 1000w Gavitas, sealed and well insulated with panda film as the reflective material.
Live in Michigan so a zone 5 climate and natural humidity (getting to spring currently) typically isn't an issue.

Trying to size a dehu but the calcs online are saying for 10% runoff and 97% plant expiration if you feed your plants .5 gallons each every day than I would need 42 pint dehu but if watering 1.5g per plant per day would need 126g dehu. Obviously with Co2 I am looking for temps to be between 85-90 and proper humidity.

Would this work or am I missing something key here?

Get a Quest, Anden or Santa-Fe. You will need a big one. 150 pint atleast.
 

BurnzAU

Well-Known Member
So you don't think that one will work in the link? The Quests/Anden/Santa-Fe (Industry standard I know) is super expensive.
The Quests / Anden / Santa-Fe run so much more efficiently, use half the power for same amount of water removal as the cheaper household models. You can mount them overhead easily to increase your floor space (big bonus). They are designed to be run 24/7 and they don't break as often. My Quest 70 removes more water than my cheaper household 130ppd dehum, which should be removing double by the specs.

You are setting up a big grow, you don't want to cheap out on your materials and have the whole crop go to shit.
 

xIPhobiaIx

Active Member
The Quests / Anden / Santa-Fe run so much more efficiently, use half the power for same amount of water removal as the cheaper household models. You can mount them overhead easily to increase your floor space (big bonus). They are designed to be run 24/7 and they don't break as often. My Quest 70 removes more water than my cheaper household 130ppd dehum, which should be removing double by the specs.

You are setting up a big grow, you don't want to cheap out on your materials and have the whole crop go to shit.
Any opinion on the Active Air or Ideal Air models? I see these in a lot of Hydro stores and the grower I know swears by Ideal-Air.

Not saying these are the way to go in fact your prob right but I want to see what you have to say anyways.

Thanks?!
 

BurnzAU

Well-Known Member
Any opinion on the Active Air or Ideal Air models? I see these in a lot of Hydro stores and the grower I know swears by Ideal-Air.

Not saying these are the way to go in fact your prob right but I want to see what you have to say anyways.

Thanks?!
They might be good man, I'm from a different country so most aren't available here.
 
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