Thinking about a mini split

jkwrestling13 said:

how about this one?

http://www.ebay.com/itm/24000-BTU-Ductless-AC-Mini-Split-Air-Conditioner-and-Heat-Pump-19-SEER-/360930733057?hash=item540925ec01

Also one more question, do they dehumidify? Right now in a 4x8 im running only a 5000 btu window shaker and it keeps the humidity at the perfect range.

Click to expand...

All those are nice units . They dehumidify big time when they are working hard

patrickkawi37 said:

All those are nice units . They dehumidify big time when they are working hard

Click to expand...

Perfect, thanks so much for all your guys' help, i really appreciate it.

Will likely go with the 19 seer unit

Yes go with efficiency for sure. i also live in michigan. in a 4 (air cooled) light room with co2 burner and dehu i use a 18000 btu split. it is overkill. if u dont plan on expanding a lot defiantly dont get a 2 ton.
that 19 seer in the link only has 16 feet of line. usually they only contain enough refrigerant for the lines that come with them so u may have to add some.

correction. that unit is pre charged for max 25 feet.

Michigan growers unite!


I've been slowly looking at these units too...

Thanks for the thread, another one to reference.

I'm not going to recommend a brand, because I have little experience with the cheap ones. Just make sure if your running a sealed room you get a split with a low ambient kit, such as the senville one you linked to.

- Jiji

Also, can you add line to the unit? Im think i could do with just25 foot, and i understand they lose efficiency after25 foot, but i may need to go a bit longer

clayawesome said:

Yes go with efficiency for sure. i also live in michigan. in a 4 (air cooled) light room with co2 burner and dehu i use a 18000 btu split. it is overkill. if u dont plan on expanding a lot defiantly dont get a 2 ton.
that 19 seer in the link only has 16 feet of line. usually they only contain enough refrigerant for the lines that come with them so u may have to add some.

Click to expand...

My lights will not be air cooled, and i want to go big enough to add a co2 burner and more lights if need be.

if u add more than 25 ft total u must have someone add more refrigerant as well but yes u can

I'd recommend you go with a 20# tank and a CO2 controller. I only pay $15 for a fill up every couple months in a similar size room and you reduce the cost of your cooling.

nevergoodenuf said:

I'd recommend you go with a 20# tank and a CO2 controller. I only pay $15 for a fill up every couple months in a similar size room and you reduce the cost of your cooling.

Click to expand...

I currently have a 20# tank and regulator. I go through a tank in 2 weeks in a 4x8 room.

What are you using to control PPMs? Are you sealed?

nevergoodenuf said:

What are you using to control PPMs? Are you sealed?

Click to expand...

Im thinking thats where my problem is. At the moment im running just a 5000 btu window ac. It keeps temps down, but it I am assuming there is some co2 leakage going on.

As for total lineset length without having to add additional refrigerant check the manufacturers installation manual because they are all different (15' to 50'+ depending on manufacturer). You will not see a loss of efficiency by going over 25' - building envelope and installation issues will have noticeable impact long before LS length gives you problems. With regards to your room size and future lighting upgrades you might consider getting a multi-head condenser and just install one head initially. When you add more lights get more heads.

jkwrestling13 said:

Im thinking thats where my problem is. At the moment im running just a 5000 btu window ac. It keeps temps down, but it I am assuming there is some co2 leakage going on.

Click to expand...

a window unit will suck out your c02, a mini split will not

horse renoir said:

a window unit will suck out your c02, a mini split will not

Click to expand...

I am aware.