wall mount mini split condenser here?

[PoorOwner]

I am thinking of mounting the mini split condenser where I marked in the picture?
The house AC condenser is 18.5" from the wall. The house AC lines come from the far right so we know it's safe to find the studs and install a bracket where I marked.

The mini split condenser is 13" and needs to be 4" from the wall.

So it will be close but not exactly in each other's path.

Does the wall mounting make it sound much louder inside? It's just for the garage so in my last house I could hear the outside (on ground) if I pay attention, but it was not a big deal

 

[soob]

It'd be preferable to put it higher up the wall. The units will take an efficiency hit from the heated air.

But noise is a non issue with mini splits. You won't be able to even tell it's on. The brackets should have rubber mounts that will dampen any vibration.

 

[Jackfre]

As noted, due to location in the hot air stream of the lower condenser it is a bad location.

 

[PoorOwner]

I just found this stand which would let me tuck the unit blowing to the left, elevated, on the side of the left condenser. (where the wall turns into a nook in the shade) . There is a patio step there but this elevates it 12" out of the leaves that tend to get blown in the corner, and it is much more shaded. I forgot, the stucco emits alot of heat after the sun beats on it so another reason this is better.

 

[Jackfre]

I use the wall brackets from Airtec on my mshp's. Your stand will work, but if it is an area that accumulates debris, those legs will get fouled and contribute to the problem. I'd try the wall brackets.

 

[yeldogt]

I installed a 30k mitsubishi 3/head on a brick wall using the brackets. If I had to do it again -- would not mount it that way. Maybe with the smaller units or wood wall the vibration would be less.

It's very minor -- I'm sure most people accustomed to typical systems would think I'm being picky. I can't tell it running most of the time -- and it's silent when standing outside next to it .. but, running full it does make a little vibration. It does have rubber mounts .. we actually chewed them out for better ones for slight improvement.

It would be interesting to hear from those with wall mounts if they can hear or feel anything.

 

[Git]

My installation is pretty similar to what you are talking about

S Cal - 3rd stall of the garage sticks out past the side of the house so I could use the 'rear wall' of that stall

The garage was drywalled but not insulated. I originally tried using a 12k through-the-wall ac but that just didn't get the job done. (I only really had one place to install it - the water heater was on one side of it and a small closet on the other) so when I upgraded to a 24k Mr Slim, I also had to deal with the hole in the wall

I ended up mounting the condenser as high up as possible. Partially to get it up out of the way and partially to cover up the hole.

I made a wooden stick mock up of the outside unit so I could position the wall bracket properly and see how it would actually look/work out. I then went ahead and installed it and have been very happy with the results.

As you know the last several days in S Cal have been *very* hot and as I sit here in the garage writing this post (about 5' on the other side of the condenser) all I can hear is the fan from the inside unit running. I will occasionally hear a very low rumbling - when the unit is spooling up or whatever it is doing but it really isn't an issue to me and it is few and far between. (I also have refrigerator in the garage - which makes it own noises)

I don't think you will have an issue with the wall mount

 

[PoorOwner]

Here is the nook behind the stall in the garage, the line set can go out there abouts..

I am not thinking of using wall mount there because it would just be putting the unit in the view of the window. But using the stand or just put the unit there on the ground, it would not really block the window's view.

 

[PoorOwner]

hello, I see you have the 24k, what size head unit is in your 3 car garage?

I was originally thinking of getting the mitsubishi M series in 18k, but I am thinking of oversize to 24k. The CFM is more powerful, it uses about 500W more, cooling is only 22000, not true 24k. I believe the cool setting goes down to 60. If I am working on my car, I am going to set it to 60 and if it doesn't reach it, then I would still set it so.

I understand yours is multi zone but if a 18K head works for you then maybe it will work for me too? Not sure if maybe having the 18k head on the 24k condenser have more headroom than a regular 18k system or not.

FYI My garage is 660 square feet with 10.5 foot ceiling, the side walls are not insulated like all the tract homes in CA.

My installation is pretty similar to what you are talking about

S Cal - 3rd stall of the garage sticks out past the side of the house so I could use the 'rear wall' of that stall

The garage was drywalled but not insulated. I originally tried using a 12k through-the-wall ac but that just didn't get the job done. (I only really had one place to install it - the water heater was on one side of it and a small closet on the other) so when I upgraded to a 24k Mr Slim, I also had to deal with the hole in the wall

I ended up mounting the condenser as high up as possible. Partially to get it up out of the way and partially to cover up the hole.

I made a wooden stick mock up of the outside unit so I could position the wall bracket properly and see how it would actually look/work out. I then went ahead and installed it and have been very happy with the results.

As you know the last several days in S Cal have been *very* hot and as I sit here in the garage writing this post (about 5' on the other side of the condenser) all I can hear is the fan from the inside unit running. I will occasionally hear a very low rumbling - when the unit is spooling up or whatever it is doing but it really isn't an issue to me and it is few and far between. (I also have refrigerator in the garage - which makes it own noises)

I don't think you will have an issue with the wall mount

 

[Fueler]

Noise from the 36k outside unit on my shop.
Mounted on a steel wall. Can't hear it inside.
Outside you can definitely hear that big fan if you get within 20 feet.

The smaller house units. Can stand next to the outside unit and have to double check to see if they are running. Truly amazing.

 

[dsimatt]

I was going to mount my mitsubishi on a wall but talking to the techs I decided to ground mount it. Yes if you have the system at full load you can hear the fan going but once it ramps down I can hear my neighbors ac running over mine standing next to it.

 

[Git]

hello, I see you have the 24k, what size head unit is in your 3 car garage?

24k unit with one 18k indoor unit in the garage and a 6k indoor unit in an adjacent room

My house faces the East, so we get the morning sun on the garage door and even though it is insulated, if you feel the interior metal parts they get quite warm. Another problem is over the 3rd bay I installed two large skylights - again not insulated (wasn't thinking of AC when I did it)

With that being said, over the winter I thought about installing a 3rd (6k) unit in the garage. The outdoor unit has connections for it but when I looked into it I found out it can only handle two

So the 18k in the garage usually does a real good job - especially considering my situation. I noticed that when they sell multi zone systems, Mitsubishi will package them both ways. I could have purchased a system with an 18k condenser because we neve run both indoor units at the same time.

This is the system I bought
https://www.ecomfort.com/Mitsubishi-M2H24W06180000-A/p60913.html