HVAC experience? / AC questions

getogrow

Well-Known Member
I'm a little confused on the air flow. Are you exhausting conditioned air (cooled and/or dehumidified air) outdoors?
Yes, thats what im doing is exhausting the conditioned air. Im sure its not efficient at all but i want the free co2 from outside and would like to keep the aroma to a minimum. I close it off here an there if needed.

Im using 80's tech. Intake at the bottom of the room and the outake on the opposite side up top for heat.
 

2com

Well-Known Member
Yes, thats what im doing is exhausting the conditioned air. Im sure its not efficient at all but i want the free co2 from outside and would like to keep the aroma to a minimum. I close it off here an there if needed.

Im using 80's tech. Intake at the bottom of the room and the outake on the opposite side up top for heat.
If you circulate/exchange the air just within the house, you'll probably still get ambient (or higher) co2 levels, but not be exhausting the cold, conditioned air directly outside.
Maybe you don't need the ac running, just good air exchange with the rest of the building.

Ok, cool.
 

getogrow

Well-Known Member
If you circulate/exchange the air just within the house, you'll probably still get ambient (or higher) co2 levels, but not be exhausting the cold, conditioned air directly outside.
Maybe you don't need the ac running, just good air exchange with the rest of the building.

Ok, cool.
I cant exchange the air from the common area , its not feasible.
I wish i could get away without ac but i would be well over 100f if i did that. (2200w+dehumy in a 10x12x8 room with just a 12k window ac)
Could seal the room off if i wanted and it would stay in range but then i would never have fresh air.
 

2com

Well-Known Member
1) How does anyone living in a region with winter air condition their grow room in the winter?
I mean if you don't have a split system with a heat pump / rated for low ambient (winter) temps, or if you use a window ac (actually installed through a window), by the way.

2) If you're using indoor air to cool the condenser/hot side, how are you supplying the air and where are you exhausting it? (I could see using it for heating the home, but you'd think you'd need a Tee and damper or something in case it gets too hot it could dump the excess outside).
 

MidnightSun72

Well-Known Member
1) How does anyone living in a region with winter air condition their grow room in the winter?
I mean if you don't have a split system with a heat pump / rated for low ambient (winter) temps, or if you use a window ac (actually installed through a window), by the way.

2) If you're using indoor air to cool the condenser/hot side, how are you supplying the air and where are you exhausting it? (I could see using it for heating the home, but you'd think you'd need a Tee and damper or something in case it gets too hot it could dump the excess outside).
We don't have that many -15 degree Celsius days here (which is the limit on my AC). And I got my room setup to use exhaust fans as needed. So if it's ever too cold I can just use the cold winter air to cool the room.

secondly you can build an enclosure around your condenser unit so it keeps the heat a little bit. And you can keep trucking on. This also works for window shakers.
 

2com

Well-Known Member
And I got my room setup to use exhaust fans as needed. So if it's ever too cold I can just use the cold winter air to cool the room.
Doesn't this fuck with your humidity and co2, when you do this?
secondly you can build an enclosure around your condenser unit so it keeps the heat a little bit. And you can keep trucking on. This also works for window shakers.
You mean for a window unit / split unit condenser that is outside? Build a semi-box around it?

Anyway, I couldn't do this, as I can't even have the unit out the window at all. Haha.

I'm thinking this will have to be done (last example, scroll to bottom to see): https://www.420magazine.com/community/threads/window-ac-conversion-for-an-enclosed-space.116244/

Which I'd planned on. But if supply air to condenser is coming from outside, in the winter, it might be too cold.... ...?

Hmm. Maybe the easiest would be to fuckin' move locations. Hah!
 

MidnightSun72

Well-Known Member
Doesn't this fuck with your humidity and co2, when you do this?

You mean for a window unit / split unit condenser that is outside? Build a semi-box around it?

Anyway, I couldn't do this, as I can't even have the unit out the window at all. Haha.

I'm thinking this will have to be done (last example, scroll to bottom to see): https://www.420magazine.com/community/threads/window-ac-conversion-for-an-enclosed-space.116244/

Which I'd planned on. But if supply air to condenser is coming from outside, in the winter, it might be too cold.... ...?

Hmm. Maybe the easiest would be to fuckin' move locations. Hah!
Yes it will drop the humidty to 45ish but like that happens how many days a year? And I would just turn off the CO2 for a couple days. Not really an issue.

may basically semi enclose the back end. If you are drawing air in your house then pipe that to the intake. And pipe the hot stuff back out of the house unless it's winter.
 

StonedGardener

Well-Known Member
Hi,

I don't know exactly what make/model of AC I'll be picking up, so I'm wondering if I should just run 3 wire + ground, or 2 wire + ground? Some of these units use a neutral, right? Maybe it'd be best to run the 3 wire + ground, just in case, so it's there.

I'm thinking of/looking for 24000 BTU at most, 240V, Inverter (mini split or window/through wall design) and would also like to know, what sort of amperage these units *actually draw* - as I'm getting some mixed info that isn't adding up or making sense to me.
I have a great old friend visiting.......in the business, his own, for decades.......after reading your post he felt that you are in over your head........he hoped your mother didn't find you dead on the floor......he thought you went DIY due to cost. He also said that 3 phase is commercial not residential ( unless your " running some monster piece of equipment like an 1100 hp lathe"). Not trying to get in the way, my experience/knowledge minimal.........just be safe.
 

MidnightSun72

Well-Known Member
I have a great old friend visiting.......in the business, his own, for decades.......after reading your post he felt that you are in over your head........he hoped your mother didn't find you dead on the floor......he thought you went DIY due to cost. He also said that 3 phase is commercial not residential ( unless your " running some monster piece of equipment like an 1100 hp lathe"). Not trying to get in the way, my experience/knowledge minimal.........just be safe.
OP never said he had 3 phase anything. In fact he specifically said he wasn't talking about 3 phase power at all to another confused poster.
Anyways so your buddy misread one post and decided OP is over his head? How helpful.
 
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StonedGardener

Well-Known Member
OP never said he had 3 phase anything. In fact he specifically said he wasn't talking about 3 phase power at all to another confused poster.
Anyways so your buddy misread one post and decided OP is over his head? How helpful.
I can tell who is a happy camper from afar......sorry about your problems.....so sorry to put your "panties in a bunch", sincerely.
 

Friendly_Grower

Well-Known Member
This was an interesting thread.
I too am looking at what sort of "AIR" my DIY grow-room can/should/will have.

Thanks.


Friendly_Grower
 
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