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Mini - Split AC

HALLETT BOY

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What's the best and cheapest mini-split ac system for garage ? I was thinking 24k BTU ? They all seem to be made in China . What about Mr Cool ? They come pre-charged. Is Amazon / E bay the best place to get one ?
 

COCA COLA COWBOY

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I bought a York and installed it in a trailer I had. Worked amazing! I think they are being made in Mexico though.
 

Mandelon

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The saying you get what you pay for is relevant here. No repair parts for cheap units.
 

Happy Smitty

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If harbor freight doesn't carry any then ebay is definitely where you want to get it. 😉
 

ONE-A-DAY

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Call Carrie, he can install the high dollar ones or the cheapo MR. cools, we did a 4 ton MR cool in our storage condo but used 3 Mitsubishi’s in our garages at home.
 

CarolynandBob

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This is what I got, it is flawless, now three friends in Vegas got the same. 24,000 BTU Daikin 17 SEER Mini Split Inverter Heat Pump Set 230V | eBay
[/QUOT
This is what I got, it is flawless, now three friends in Vegas got the same. 24,000 BTU Daikin 17 SEER Mini Split Inverter Heat Pump Set 230V | eBay
Is this a DIY? I would rather have it professionally installed, but can't get any companies out here to even return a call.

Is the Mr. Cool units junk?

On a side note: Here in the mid west we get a lot of humidity. Would adding a separate dehumidifier to the shop help with the cooling?
 

boatpi

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Have a pro do it, needs to be pumped down and a correct charge. Running in my Vegas garage now, maintains 77 degrees in the Summer.
 

CarolynandBob

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Have a pro do it, needs to be pumped down and a correct charge. Running in my Vegas garage now, maintains 77 degrees in the Summer.
Thanks, but like I said I can't get anyone to return my call. Maybe I shouldn't tell them it is for a mini split install on the voice mail.
 

charlyox

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Remember, you get what you pay for. Going cheap isn’t always the cheapest way to go.
 

LargeOrangeFont

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I’ve had a pioneer unit in my office for 5 years now.. excellent.
 

Turnup

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Thanks, but like I said I can't get anyone to return my call. Maybe I shouldn't tell them it is for a mini split install on the voice mail.
Exactly this. Everyone is ridic right now so to call back on a 3k mini job or go for the 15k job. Your almost better off educating yourself, read up, watch YouTube vids, figure out which one you want and buy it on Amazon. Start mounting things here and there, do as much as you can, then get a tech on the phone live and tell them you just need a quick pump and charge job. It's a pretty easy install minus that stuff.
 

CarolynandBob

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I am not trying to go “cheap”. I want a quality system. I have know problem installing myself. I just not sure how good the DIY systems are. I may try what turnip is suggesting.
 

Mandelon

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As a simple option those big Motel style through the wall units are easy to put in and also do heat if you need it. PTAC units, I think they are called.

This AMANA one is $860 for 14,700 btu. I don't know how much it costs to run, but they are easy to install.

Amana PTC153G35AXXX


 

240Hallett

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As a simple option those big Motel style through the wall units are easy to put in and also do heat if you need it. PTAC units, I think they are called.

This AMANA one is $860 for 14,700 btu. I don't know how much it costs to run, but they are easy to install.

Amana PTC153G35AXXX


How many BTUs are needed per cubic/square foot?
 

Mandelon

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The Internet says:
The Rules for Keeping Cool
As a rule of thumb, an air conditioner needs 20 Btu for each square foot of living space. But other considerations, such as the ceiling height and the size of your windows and doorways, might call for more cooling power


So maybe more that 20 if it is a big garage or in a hot location. At 20 per sf then a 14,000 unit should do a 600 sf garage.
 

CarolynandBob

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Anyone have any ideas about the dehumidifier? My reasoning behind that is for when I am not using the shop. If the dehumidifier is running through the night would it make it easier/quicker to cool down in the morning when I want to work in the shop?

Another question. Would it be better to have 2- 12k systems. 1 on each side of the shop? Would it even out the cooling for a large space?
 

Boat 405

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Anyone have any ideas about the dehumidifier? My reasoning behind that is for when I am not using the shop. If the dehumidifier is running through the night would it make it easier/quicker to cool down in the morning when I want to work in the shop?

Another question. Would it be better to have 2- 12k systems. 1 on each side of the shop? Would it even out the cooling for a large space?
I'd do 2 12k systems if it were me. The smaller units like a 1 ton are very very efficient and have seer ratings into the 30's. Also you can run them independently as demand is needed. Typically I run my 1.5 ton unit which has a 25.4 seer rating when I'm not home set at 88 degrees and turn the 2.5 ton (16 seer) unit off. That 1.5 ton unit keeps the garage about 90 in the hottest of days, more importantly directly over where my boat is. I just like it so my interior doesn't rot out in 120 degree heat during the summer.

The mini split units will work as a dehumidifier, so it will definitely make the work easier and quicker to cool down as one of the functions is to remove moisture. The less moisture in the air the unit has less work to do. The more moisture the harder the unit has to work.
 

Boat 405

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jones performance

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this is what i bought and installed myself in 2019. https://www.amazon.com/gp/product/B00UV3LH4Y/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1

i initially asked whats the best etc, too confusing as there were many opinions so i just said fuck and picked one off the jungle site and did it. if it breaks and parts cant be found oh well, throw it in the gutter and buy another.. one thing an ac guy told me was typically the parts inside are a universal type part and getting thsoe should be no issue just gotta figure out the part numer etc. anything propriatery well hope the mfg can supply them. i can say that this unit has performaned flawlessly for 2 years now and keeps my 900sqft garage at 74* no problem and recovers fairly quickly when i open the garage door for 10 minutes then close it. i am however installing a second unit in the fornt part of my garage simply becasue i can.
 

bowtiejunkie

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Can I throw a stupid question out: what are you guys doing to seal the gaps around the garage door(s)? I have no window or exterior door (just the door into the house), but the garage doors are not exactly sealed at sides near concrete. The doors are insulated.
 

Blackmagic94

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LG dual inverter window mount is what I’m installing. 22k btu for 699 at Home Depot and look at that energy bill
732C342B-64B4-493A-B6E9-EB65B28317CE.png
 

joecfd1

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I purchased this unit last year and installed it myself. I had to buy a small vacuum pump and gauge set to evac the line set but wasn't a big deal.

 

HALLETT BOY

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I had Carey install a 3 Ton Mitsubishi unit in garage, very happy . Didn’t know he was sick , him and his Son did the install , both very nice / personable guys .
2467C94C-4585-409E-9542-0AA50CFABE9D.jpeg
 

jones performance

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Can I throw a stupid question out: what are you guys doing to seal the gaps around the garage door(s)? I have no window or exterior door (just the door into the house), but the garage doors are not exactly sealed at sides near concrete. The doors are insulated.
my door has weatherstriping on both sides and a seal at the top thats pretty tight.
 

COCA COLA COWBOY

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I bought a York off of OfferUp for $550. It was made in Mexico and I bought it from a middle eastern AC guy in El Cajon. He said he buys a container full of them at the beginning of the year and sells them all by the end of summer. It was an easy install and worked great. I since sold the trailer and the new buyer to this day absolutely loves it and recommends them to everyone. Mine wasn't 24k, but I'm sure they have them. I would probably try Carrier on my next one.
 

Kbach

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Not quite in topic, but it is a mini split! Saw this when I was camping in Colorado a couple weeks ago. Guy said it worked awesome. Not quite the look I’m going for with a big dollar bus but to each his own.

BE9BC2A7-D412-4116-BD33-B42C7FD076A2.jpeg
BE9BC2A7-D412-4116-BD33-B42C7FD076A2.jpeg
 

2Driver

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I have a question of distance between condenser and compressor.

The current AC relic ( 40 year old Fedders unit) in my garage has the compressor 40’ away from the blower condenser unit.

Can a mini split be seperated that far apart?

I watched “this old house” and they installed the blower up stairs and ran the lines down to the basement across the house then outside. I figure that was at least 35’
 

Flying_Lavey

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I'd do 2 12k systems if it were me. The smaller units like a 1 ton are very very efficient and have seer ratings into the 30's. Also you can run them independently as demand is needed. Typically I run my 1.5 ton unit which has a 25.4 seer rating when I'm not home set at 88 degrees and turn the 2.5 ton (16 seer) unit off. That 1.5 ton unit keeps the garage about 90 in the hottest of days, more importantly directly over where my boat is. I just like it so my interior doesn't rot out in 120 degree heat during the summer.

The mini split units will work as a dehumidifier, so it will definitely make the work easier and quicker to cool down as one of the functions is to remove moisture. The less moisture in the air the unit has less work to do. The more moisture the harder the unit has to work.
Most dehumidification systems are just A/C with added systems to temper the air. That is until you go to very large spaces where they will have dedicated dehumidification air handlers that have very large desiccant wheels to passively remove moisture. Most Mini splits have a dehumidification setting as well.

Not quite in topic, but it is a mini split! Saw this when I was camping in Colorado a couple weeks ago. Guy said it worked awesome. Not quite the look I’m going for with a big dollar bus but to each his own.

View attachment 1030838 View attachment 1030838
I would not trust a mini split in a mobile application for extended life. These systems are packed in there and are not designed for vibration mitigation originating from somewhere other than the minimal vibrations coming from the compressor.
 

Flying_Lavey

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I have a question of distance between condenser and compressor.

The current AC relic ( 40 year old Fedders unit) in my garage has the compressor 40’ away from the blower condenser unit.

Can a mini split be seperated that far apart?

I watched “this old house” and they installed the blower up stairs and ran the lines down to the basement across the house then outside. I figure that was at least 35’
Different systems have different line length limitations. Usually Mitsubishi tends to have the longest limits to line length. Most all have no issue up to 50 feet or so.
 

cofooter

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I just put in a Mr Cool dual zone 27K unit. Works awesome and really easy to install myself. Super quiet and cold. < $2500 with everything. I have only heard good things about them, but will let you guys know if it craps out..........
 
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Boat 405

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Not quite in topic, but it is a mini split! Saw this when I was camping in Colorado a couple weeks ago. Guy said it worked awesome. Not quite the look I’m going for with a big dollar bus but to each his own.

View attachment 1030838 View attachment 1030838
Looks like a 2 zone unit. I bet it works killer. The problem with most RV's is the shitty air roof top air conditioning. I bet he has plenty of generator/solar panels and inverter by the looks of it and the mini splits are just some much quieter to run than the roof top a/c units. Kind of an eye sore, but function is key if he is off grid for long times.

Judging by the panels on the roof I bet he has a big enough inverter to run it on batteries. Couldn't do that with a roof top a/c
 

Boat 405

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I have a question of distance between condenser and compressor.

The current AC relic ( 40 year old Fedders unit) in my garage has the compressor 40’ away from the blower condenser unit.

Can a mini split be seperated that far apart?

I watched “this old house” and they installed the blower up stairs and ran the lines down to the basement across the house then outside. I figure that was at least 35’
50' line set no problem with most. Some as much as 75'. Generally they will say in the instructions how long of line set max
 

2Driver

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The guy that quoted me said 10'. He was trying to find a place in my outside entrance way to put it.

Lazy ass just didn't want to trench. Quoted $6K for a 400 Sq ft room I think it was an LG. Electrical and drains are in place from old unit.
 

Ace in the Hole

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I purchased this unit last year and installed it myself. I had to buy a small vacuum pump and gauge set to evac the line set but wasn't a big deal.

There is a dual head Gree at the cabin in WA..works fine in terms of AC. Heating its one head or the other...if you try both it errors and shuts down. 2 different ac guys couldn't figure it out. Idk if its just something with this unit or that brand.
 

Flying_Lavey

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The guy that quoted me said 10'. He was trying to find a place in my outside entrance way to put it.

Lazy ass just didn't want to trench. Quoted $6K for a 400 Sq ft room I think it was an LG. Electrical and drains are in place from old unit.
Most require a 15' minimum lineset before adjustments to the factory charge are required.

Sent from my SM-G781V using Tapatalk
 

Flying_Lavey

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There is a dual head Gree at the cabin in WA..works fine in terms of AC. Heating its one head or the other...if you try both it errors and shuts down. 2 different ac guys couldn't figure it out. Idk if its just something with this unit or that brand.
My money would be a charge issue. Was likely never charged correctly from the start.

Sent from my SM-G781V using Tapatalk
 

Ace in the Hole

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My money would be a charge issue. Was likely never charged correctly from the start.

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Pre-existing unit from when they bought the cabin last year. I don't think anyone is going back there until maybe December, ill toss that on my list to check.
 

joecfd1

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There is a dual head Gree at the cabin in WA..works fine in terms of AC. Heating its one head or the other...if you try both it errors and shuts down. 2 different ac guys couldn't figure it out. Idk if its just something with this unit or that brand.
Honestly, I havent tried the heater yet...
 

2Driver

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Most require a 15' minimum lineset before adjustments to the factory charge are required.

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Thanks, I need to bite the bullet and upgrade.

Meanwhile my 40 year old Fedders unit continues to make a 20 degree differential.
 

Kbach

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Looks like a 2 zone unit. I bet it works killer. The problem with most RV's is the shitty air roof top air conditioning. I bet he has plenty of generator/solar panels and inverter by the looks of it and the mini splits are just some much quieter to run than the roof top a/c units. Kind of an eye sore, but function is key if he is off grid for long times.

Judging by the panels on the roof I bet he has a big enough inverter to run it on batteries. Couldn't do that with a roof top a/c
Yep, basically what you said. Shit ton of solar and inverters along with lithium batt banks so he can run it off the sun for weeks at a time. Guy was super nice, out of Vegas. When we saw him he was headed to Moab, where we were the day before and it was 106. He was planning on staying at a BLM campsite w/o hookups and didn’t bat an eye when I said how hot it had been. I was at a site with hookups in Moab, running 2 15k units nonstop during the day in my 40’ pusher and was only able to keep it at 79/80 during the heat of the day.

I tried going to the site he had listed on his rig but it wasn’t any good. Kinda wish I got his contact info, would have liked to pick his brain a little more.
 
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