Help with mini split btus

Nizza

Nizza

Well-Known Member
Dividedsky said:
I love my daikin. I have Mitsubishi mr slims upstairs in my living space and I have to take them apart almost twice a year to clean blower wheels and other areas because of mildew buildup. Its such a pain in the ass. Haven't had to do that once with my daikin in grow room.
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It may be more to do with the dakin running constantly and the constant air flow preventing build up because of aerobic conditions. When a unit runs very seldom without airflow it can invite mold and mildew into any system

Also can be that the units upstairs run twice as often because heat rises
 
Renfro

Renfro

Well-Known Member
I have never has any mildew buildup in my AC's. Not even a slightest sign. I wonder why? They aren't expensive units. I don't see and UV light in there or anything either. Some guys put a small UV bulb or two in there to sterilize the innards 24/7.
 
Dividedsky

Dividedsky

Well-Known Member
Renfro said:
I have never has any mildew buildup in my AC's. Not even a slightest sign. I wonder why? They aren't expensive units. I don't see and UV light in there or anything either. Some guys put a small UV bulb or two in there to sterilize the innards 24/7.
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I think my upstairs unit in living quaters were installed sloppy. I agree I shouldn't have to clean my units every year. They are pain in the ass to take apart.
 
Dividedsky

Dividedsky

Well-Known Member
Renfro said:
Yeah but since his room is in a garage he likely needs one just to cool the empty room on a hot summer day.
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If grow is in a garage w/ a window, and growing in a tent he'd probably be better off going with a window shaker for now. They wouldn't have to worry about light leaking thru window shaker a/c seeing that he in a tent.
 
Dividedsky

Dividedsky

Well-Known Member
Renfro said:
I would never talk someone out of a minisplit provided it can fit their application, they rule.
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Ya my mini split is the best investment in my grow room by far. I agree with you. I just think a minisplit 2 400s is a bit much but he could alway upgrade the lights and will still get great result regardless with a mini split
 
Dividedsky

Dividedsky

Well-Known Member
Renfro said:
With a sealed space he will have odor control on lock too.
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Yup I sealed up my room and a 6 in inline and carbon filter takes care of the smell. I've gotten the best results I've ever gotten after sealing up my room a couple years ago.
 
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Renfro

Renfro

Well-Known Member
Dividedsky said:
Yup I sealed up my room nd a 6 in inline and carbon filter takes care of the smell. I've gotten the best results I've ever gotten after sealing up my room a couple years ago.
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Awesome! Where do you keep your CO2 PPM's at during various stages?
 
Renfro

Renfro

Well-Known Member
I like to keep mine at the 1000 - 1200 and I ramp it down with my lights to the 600 - 800 level for ripening. I use a 200 PPM dead band. I honestly wish I could set it higher. Have it run between say 800 - 1200 with a 400 PPM dead band setting.
 
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dbmoney

Member
Renfro / dividedsky the only reason I was going with 400watts is bc I all ready have them from a couple years ago I do want to upgrade them very soon when ever I run across some at a deal. Also are yall running co2 tank or co2 burner I have never messed with c02 with a sealed room do I need to have an intake an exasut to bring in fresh air an if so how often do I turn it on to replace the air an not waste my co2
 
Renfro

Renfro

Well-Known Member
dbmoney said:
Renfro / dividedsky the only reason I was going with 400watts is bc I all ready have them from a couple years ago I do want to upgrade them very soon when ever I run across some at a deal. Also are yall running co2 tank or co2 burner I have never messed with c02 with a sealed room do I need to have an intake an exasut to bring in fresh air an if so how often do I turn it on to replace the air an not waste my co2
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Well lets size equipment like the AC for the future. Figure out where you will go down the road, biggest scenario you can imagine. For me that would probably be 4kW. Of course one can use LED or whatever but one might at least consider sizing for 3kW. Also remember that overdrive wattage makes heat as well. So if you have four 1000W lights on overdrive of 1200 watts then you need to cool 4800 watts.

Just do some thinking about where you would end up in a couple years. Maybe thats 2 x 1000w and a 400 watt veg tent. Consider heat from the dehumidifier as well.
 
A

Apalchen

Well-Known Member
Same conclusion I came up with for this size room. I'd say 3-4k watts and 18k btu-24k btu. Since the price difference is not much between the different size units I'd just go with 24k. But some of that depends on climate I guess and how hot this garage is. But a 24k btu would for sure do it.
 
Renfro

Renfro

Well-Known Member
Apalchen said:
Since the price difference is not much between the different size units I'd just go with 24k.
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I agree wholeheartedly. Two tons can handle anything we could ever throw at that space. CO2 generator, dehumidifier and 4kW of HPS on overdrive (assuming a 10 x 10 and not 8x8).

That said, if going with the 1.5 ton makes the budget work for a Mitsubishi and the 2 ton renders that option cost prohibitive then I would be very much on the side of the 1.5 ton Mitsubishi.
 
Renfro

Renfro

Well-Known Member
On a side note, using a WIFI controller on the AC unit one might be able to get away with the AC doing the dehumidification during the lights on period provided it's fighting enough heat load and have the WFIF controller scheduled to switch to dehumidification mode during lights out.

If the heat load is minimal (800 watts) then a dehumidifier may be required during lights on since the AC won't be pulling much moisture.
 
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