4-5 Ton AC recommendation

Apalchen · Apr 28, 2020

That's where a big chunk of my budget went it cost me 4k just to get the 200 amp service installed. That's not including any wiring, I picked up the meter base even and installed that myself. They charged 4k for underground line, new transformer, and hooking up. So I got all 200 amps for out there. I planned on running flips anyways unless it was real hot in summer and ac couldn't keep up during the day.

The extent of my electrical knowledge comes from growing and as of a year ago had only ever wired like one outlet up. But I passed inspection and learned a lot.

Aeroknow · Apr 28, 2020

Apalchen said:
Using nylog and no torque wrench you think is better than torque wrench? That was another tool I was adding into the cost of doing myself.

I personally would never go without the nylog.
Just a VERY VERY small amount of it on the face of the flare and on the back of the flare. Did I say VERY small amount? Because you def don’t need much.
But when you do use a VERY tiny amount of it on the back of the flare it acts as a lubricant and can fuck with a torque value. So using that stupid ass digital torque wrench I got can give a false reading and you can end up going too far and splitting the flare. One thing I read somewhere was to use the lower torque value given if using nylog.
Besides the fuckery i went through with the digital torque wrench, i’ve never had a flare fitting fail and i’ve done a few. Always with nylog and torque by “feel”.

ebcrew · Apr 29, 2020

Aeroknow said:
So, that “ducted” handler like the one i posted a link to. USUALLY you would run ducting off the front. You don’t have to, but they are pretty mich made to mount above ceiling and be ducted to room. Although they are low static i believe. They probably wouldn’t be my choice for that situation. Hanging from a growroom ceiling, you can put a ducting take-off on the front and attach 90’s or lengths of ducting to distribute the air better within the room.
Basically it’s what you would attach ducting to

Mitsubishi makes an actual air handler now for mini splits too.

Apalchen · Apr 29, 2020

Got a quote back from the tech. And at one point I guess I said id like to be able to run up to 10k watts in each room, which I would like to, but I had decided on 8 being a better fit. Anyways he quoted off the 10k per room. He usually does Mitsubishi minis but when called said he found some units from LG made for grow rooms. So 2 2.5 ton units per room for a total of 4 units. His quote was for between 17.5-18.5k. I guess these units would work better to control environment when lights are off cause they can go down to 3k btu. And they had low ambient cooling.

As much as I wish I had the money to just ball out like that I don't at the moment.

Still thinking I'll get a couple 36k units and run those and whatever lights they can cool for a while. I know they can do at least 6 per room and right now thats what I got so just gonna get rolling with that.

Unless I get a better quote back but some of the other guys never called back.

Renfro · Apr 29, 2020

Damn, you can get two of their 4 ton units for less that 17.5 - 18.5k and install them yourself.

Mitsubishi MXZ-5C42NA2 4-MSZ-GL12NA-U1 Wall Mounted 4-Zone System - 42,000 BTU Outdoor - 12k + 12k + 12k + 12k Indoor - 19.7 SEER

The Mitsubishi Wall Mounted 4-Zone System - 42,000 BTU Outdoor - 12k + 12k + 12k + 12k Indoor - 19.7 SEER MXZ-5C42NA2 4-MSZ-GL12NA-U1 has been discontinued. Check out Expert's recommended alternatives for another top mini split system.

www.acwholesalers.com

The down side to those is they have 4 air handlers lol. So each room would have 4 linesets and 4 air handlers. Now that makes for a lot of work installing them and more potentials for leaks but you do get really even distribution of the cooling. When I did 3 tons on 9kw I had three air handlers in my flowering room and one in the veg.

Apalchen · Apr 29, 2020

You don't have any issues now with just the one air handler? I really don't wanna run multiple line sets I'm really leaning toward the Midea 4 tons after I got another quote back was a bit better but still 15k. Now I'm trying to decide between the ducted air handler or the ceiling cassette one. Since you didn't like your air handlers and it's easier for me to mount to ceiling anyways I figured one of those two would be good. Leaning toward the ducted and just running it open I figure if need more distribution can always duct it but I got a lot of air movement so should be good.

Renfro · Apr 29, 2020

Damn he wants 15k for the midea's? He is making some bank on those lol They are only about $3500 with a 25 foot lineset! So 7k ish gets the gear.

Midea 48000 BTU 17.8 SEER Commercial Floor Ceiling Hyper Heat Pump AC

This Package Includes: (1) Outdoor Unit 48,000Btu ( DLCLR )AH48AAK DLCLR Features Include : Heats & Cools ( -22 F / -13 F ) Basepan Heater ( Built in) Golden Hydrophilic Fins 7yr Compressor 5yr Parts Warranty Click the Buttons below for detailed product info: Product Brochure Compressor...

www.minisplitwarehouse.com

Renfro · Apr 29, 2020

That midea will cool down to -13 so not as low as the Mitsubishi but at those temps you could use an intake to cool really easily and the cold air would be nature be dry.

Apalchen · Apr 29, 2020

Renfro said:
Damn he wants 15k for the midea's? He is making some bank on those lol They are only about $3500 with a 25 foot lineset! So 7k ish gets the gear.

Midea 48000 BTU 17.8 SEER Commercial Floor Ceiling Hyper Heat Pump AC

This Package Includes: (1) Outdoor Unit 48,000Btu ( DLCLR )AH48AAK DLCLR Features Include : Heats & Cools ( -22 F / -13 F ) Basepan Heater ( Built in) Golden Hydrophilic Fins 7yr Compressor 5yr Parts Warranty Click the Buttons below for detailed product info: Product Brochure Compressor...

www.minisplitwarehouse.com

No that was for carrier units 4 2 ton units. I'm just going midea cause I can't afford the quotes I'm getting back and they run down in low temps.

Renfro · Apr 29, 2020

If you do all the install yourself, set the condenser units, hang the air handlers, run power, run the lineset but don't connect it and pay a tech to finish them up it shouldn't cost more than $300 - $500 per unit.

Apalchen · Apr 29, 2020

Have you seen the different head sets available for the 4 ton midea units? I'm thinking of either the ducted or ceiling cassette. Do you think air distribution would be a problem how do you move yours with only the one head unit?

Apalchen · Apr 29, 2020

Renfro said:
If you do all the install yourself, set the condenser units, hang the air handlers, run power, run the lineset but don't connect it and pay a tech to finish them up it shouldn't cost more than $300 - $500 per unit.

Exactly what I'm gonna do while I was on the phone with him he said he would run the line sets, nitrogen pressure test and vac for 800 dollars and that included the lineset. Now I'm just trying to decide which head set to buy with it.

Renfro · Apr 29, 2020

Apalchen said:
Exactly what I'm gonna do while I was on the phone with him he said he would run the line sets, nitrogen pressure test and vac for 800 dollars and that included the lineset. Now I'm just trying to decide which head set to buy with it.

I got the wall / ceiling mount and hung them from the ceiling over where I mix nutes and don't have any lights hanging. This worked great for me.

Renfro · Apr 29, 2020

I found the midea condensate drain was very easy to connect using 3/4" hose to a 3/4 barbed fitting that I changed over to PVC after that keeping the run slightly downhill.

Aeroknow · Apr 29, 2020

Apalchen said:
Have you seen the different head sets available for the 4 ton midea units? I'm thinking of either the ducted or ceiling cassette. Do you think air distribution would be a problem how do you move yours with only the one head unit?

Just a suggestion. If you draw up the room dimensions and show where the plants are, i give you my opinion on if a single wall/ceiling mount, mounted on the ceiling would be best and where to put it.
If not those ducted ceiling mounts are the shit, if you know of a tin knocker he can make up one of those take-offs.
I have two of the floor/ceiling mounts hung in a 30’x20’ room. They work great as long as they aint blowing directly on the fixtures. I have 12’ ceilings. The handlers are blowing the conditioned air right above the gavitas.

Aeroknow · Apr 29, 2020

I have quite a few installs under my belt. I’ve never pressure tested with nitrogen. Although that is what professionals will do, that I am not lol.
I have confidence in my connections. Not once have i lost refrigerant. Pull vacuum. If it holds for a couple hrs, most of us self installers say it’s ok, and it is.

I’m from the trades. Got a union plumber brother with hvac friends. They even say you don’t have to.
But of course they do on installs. Over kill in my opinion.

Aeroknow · Apr 29, 2020

And about having rooms on the flip. I would totally do that, done it before. But nowadays, at least here in california, where our off-peak price of power is already fucked, you get super duper raped on power during peak hrs.

Apalchen · Apr 29, 2020

You got Instagram can send video of room I posted a picture on the first page. But I'll post another of before I was done

I have since cleaned up all the wires and raised the lights slightly. Right now only got 6 lights up. I'll grab a new picture in a bit when lights come back on.

Aeroknow · Apr 29, 2020

Apalchen said:
Have you seen the different head sets available for the 4 ton midea units? I'm thinking of either the ducted or ceiling cassette. Do you think air distribution would be a problem how do you move yours with only the one head unit?

I wouldn’t even consider the ceiling cassette. They are made to be hung above and even with the ceiling. Totally would have to rig it up to be hung up tight surface mounted to your ceiling. Imo, not an option.

Aeroknow · Apr 29, 2020

Apalchen said:
You got Instagram can send video of room I posted a picture on the first page. But I'll post another of before I was done View attachment 4549860

I have since cleaned up all the wires and raised the lights slightly. Right now only got 6 lights up. Here is the room a couple days ago.

Looks very ready for a single zone, wall/ceiling mounted handler mounted on the ceiling to me ;-)

4-5 Ton AC recommendation

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