Mini split outdoor unit mount

[juddspaintballs]

I bought the 12k BTU MRCOOL DIY mini split for a room I'm building and insulating on the end of my house. I have the space and location to mount it on the ground on the back of my house, but I think I'd rather wall mount it on the end of my house instead.


Two questions about mounting it on the end of the house, which is the option I think I'm going to go for. First, is there any issue with mounting it high like ceiling height outside so it's not an obstacle for mowing? Secondly, should I buy the $50 bracket to hold it or would building a simple bracket out of angle iron myself be better? I can weld and I have the angle iron already.


I'm in the eastern panhandle of WV and I'm on a hill. It gets windy and we rarely see temperatures below the teens. If it get so cold the mini can't keep up with heat, I'll just leave the door open between the kitchen and this new mudroom I'm building and the heat from the rest of the house can migrate out there.

 

[Jackfre]

I have 3 condensing units on my home. Two are mounted on the wall above the first floor porch roof. They are on the off side of the house. During a remodel a third unit was roof mounted. I happened on some 12” lite channel that made the legs. I use the Airtec wall brackets. I, too, can weld, but the Airtec’s are powder coated and 11 yrs later look like new. One of the big advantages of wall or roof mount is cleanliness and raising the unit keeps the base pan clear of ice. That is not a guarantee, but raiseing them is good practice.

 

[juddspaintballs]

I found a stainless bracket by Airtec for $75. Perhaps the MRCOOL brand would suffice for less money. I hope to put the house in the market in the spring, so longevity isn't a huge concern of mine. I'd imagine if the MRCOOL branded bracket didn't work, they wouldn't sell too well.

 

[Jim greengo]

Depends on your welding/fab skills.
Just dont mount it too high where it's hard to work on.

 

[juddspaintballs]

Depends on your welding/fab skills.
Just dont mount it too high where it's hard to work on.

Other than basic installation, what work would I need to do to it?

 

[Kaizen]

I got a bracket with that exact unit. From ingrams I think. The isolators were horrible and I had to buy others. I have an old house with balloon framed walls and I still here the unit running when it ramps up. I suggest putting it a foot off the ground. Heat works only to mid 40s with that unit. Otherwise I love it


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[juddspaintballs]

Good to know, thanks.

When you say the heat only works to the mid-40's, does that mean the unit shuts down or simply can't keep up? I'm not expecting a miracle, especially since it's only a 120v unit. I'm just curious. I don't *need* it to keep a room from freezing, but it will be the primary heat source for that room.

 

[SALIV8]

I put mine overhead. You will need access to clean the condenser coils once a season.

 

[Kaizen]

Good to know, thanks.

When you say the heat only works to the mid-40's, does that mean the unit shuts down or simply can't keep up? I'm not expecting a miracle, especially since it's only a 120v unit. I'm just curious. I don't *need* it to keep a room from freezing, but it will be the primary heat source for that room.

It will run but just very very hard and still won’t keep up. Day like today at fifty will be fine. Does great at ac and especially dry mode which just ***** the moisture out of the air.


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[juddspaintballs]

Thanks.


I'm looking at this bracket from Amazon
https://www.amazon.com/dp/B00LDU9R2I/?tag=atomicindus08-20


It looks fairly universal, fits the spacing requirements for my unit as far as distance from the wall, and it'll be quicker than building something of my own. I'm going to mount somewhat low now. I can mount it to the foundation on the end of the house towards the front (slab foundation) because it's nearly 3' off the ground at that location and it can't vibrate a wall if it's mounted to concrete.

 

[SALIV8]

This is what I have.

Mitsubishi QSWB2000M-1

 

[Fueler]

I will go against the majority here. I have used the off the shelf brackets twice and in both cases regretted it later.
Make you own and design them to put the unit further away from the wall than the oem brackets do because as one poster says you need access to clean the dust, etc off of them from time to time.


Chest high is about the sweat spot for me.

Your installation should be based on the following question
Can I work on this on a hot August day when I am pissed off?
If the answer is no then the installation need rethought.

 

[Jim greengo]

Other than basic installation, what work would I need to do to it?

Well if a fan motor or compressor something else ever goes out you dont want to be wrestling with it 10' up in the air anyway.
Speaking as an old service contractor.

 

[Jim greengo]

I got a bracket with that exact unit. From ingrams I think. The isolators were horrible and I had to buy others. I have an old house with balloon framed walls and I still here the unit running when it ramps up. I suggest putting it a foot off the ground. Heat works only to mid 40s with that unit. Otherwise I love it


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If that's ingrams water and air your talking about,I wouldnt reccomend them to anybody.

 

[juddspaintballs]

Well, fueler, I was all set to go with a pre-made one but now you have me rethinking it again! I can simply buy unistrut, some spring nuts for it, and bend some angles for bolting it together. It should work out pretty well and probably be cheaper. I'm fairly certain I have some rubber isolators somewhere in the shop.

 

[Jim greengo]

Well, fueler, I was all set to go with a pre-made one but now you have me rethinking it again! I can simply buy unistrut, some spring nuts for it, and bend some angles for bolting it together. It should work out pretty well and probably be cheaper. I'm fairly certain I have some rubber isolators somewhere in the shop.

I'd mount a pad to the strut and set it on that.

 

[yeldogt]

This is what I have.

Mitsubishi QSWB2000M-1

I have used the same -- for a 30k Hyperheat. I can hear it on the brick wall when it ramps in the winter.

 

[kelpaso1]

Wall mounted out door units can cause vibrations in the wall it's mounted to even with rubber isolators. When I first bought mine I mounted it on my garage wall outside and it vibrated the wall at certain times. Drove me nuts. Second year I ditched the wall mount and built a free standing frame mount on a concrete patio stone on the the ground. Can't even hear it now.

 

[SALIV8]

I have used the same -- for a 30k Hyperheat. I can hear it on the brick wall when it ramps in the winter.

That *****. I can’t hear anything on my two mounts on brick.

I installed wall anchors on the legs maybe you didn’t?

 

[yeldogt]

That *****. I can’t hear anything on my two mounts on brick.

I installed wall anchors on the legs maybe you didn’t?

Mine are installed with expanding inserts into the wall ... I did put rubber mounts under the legs.

The noice is not objectionable -- I'm the only one that hears it. But -- I know they can be silent. "noise" is relative ...

My 3 ton carrier 5 speed is sitting on a pad and I never hear anything unless it's running on high (rare) ... I can gear the fan.

The hyper transfers sound when it changing speeds -- not when it running steady ,,, even on high.

 

[Kaizen]

Wall mounted out door units can cause vibrations in the wall it's mounted to even with rubber isolators. When I first bought mine I mounted it on my garage wall outside and it vibrated the wall at certain times. Drove me nuts. Second year I ditched the wall mount and built a free standing frame mount on a concrete patio stone on the the ground. Can't even hear it now.

I as well as said above. I think I’m super sensitive to the low bass harmonics


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[juddspaintballs]

I'm not very worried about it. The room is going to be a mud/laundry room on the exact opposite end of the house of my bedroom.

 

[SALIV8]

Mine are installed with expanding inserts into the wall ... I did put rubber mounts under the legs.

The noice is not objectionable -- I'm the only one that hears it. But -- I know they can be silent. "noise" is relative ...

My 3 ton carrier 5 speed is sitting on a pad and I never hear anything unless it's running on high (rare) ... I can gear the fan.

The hyper transfers sound when it changing speeds -- not when it running steady ,,, even on high.

My comment about the wall anchors on the legs meant did you fasten the “L” bracket pieces to the wall in the lower set of holes provided on each leg?

I did this and there is zero vibrations. Even under the units they are whisper quiet when fully loaded.

 

[yeldogt]

My comment about the wall anchors on the legs meant did you fasten the “L” bracket pieces to the wall in the lower set of holes provided on each leg?

I did this and there is zero vibrations. Even under the units they are whisper quiet when fully loaded.

That .. I will have to check. I know there are at least two in each leg