Where would you place your outdoor unit for Mini Split, given this layout?

[XS29L9B]

I'm going to add a 36,000 BTU Mini Split for this garage to heat/cool the large room (not really concerned over the smaller one) and plan on placing the inside part of the mini-split just off center line, to the right rear of the garage. Right rear corner is where sitting/standing would happen more than anywhere else, so that's my rationale.

What are your thoughts on the outdoor unit placement? I am thinking on the right side, below the right side window.

The celing height in the back is around 11' and it's probably 9 or 10 feet from the floor to the ground. I'll have to measure to be sure, but the relevancy is the set line is 25' from Mr. Cool, if that's the route I go.
I could also place at the back right corner and then follow the trim in corner with line set, so it's fairly discreet.


What are your thoughts on placements?


Secondary to this, where would you place the electrical apparatus for the power supply? There will be a sub panel in the garage from the 400A main.

Thanks for any insight and ideas.

 

[The Cobbler]

I'm thinking right side, to the left of the window when facing ( corner of shop & house) .
mostly out of the way & well protected etc

 

[Xti04]

Is 25 ft the max lineset length? Will 25 ft get you where you want to be?I used alpine air which my units are badged as blueridge. I got 35 ft linesets for each head as I had an up stairs above garage and the actual garage unit. Most units have a minimum length of 15 ft and a max of 50 ft. I would go under the window. Mine is next to garage window and you cant hear it at all.

 

[pcmeiners]

Which way is your prevailing wind ? Make sure your fan input/output is not into the wind. If you get snow, place your outside unit above a high snow level on a raised platform or legs. I made a concrete slab with 4 legs extending 20" for the unit to sit on ,( 24" above ground level), I have (4) SS bolts anchored in the legs in case the copper junkies come around.
As to a slab, best not to attach to building, but 1/2" off it so vibration/noise does not carry. My unit is perpendicular to the predominant wind direction. Remember most heat pump have a minimum/maximum lineset length. I ran my lineset in the wall, not on the exterior of the wall, extra work but cleaner looking than on the exterior.
As to power, you only need one dedicated run of Romex or Bx (to your code), I placed surge protectors on the line.
As to the right side, do you care if you see it from the back of the living area ?
Lastly, if your unit uses a 1/4" line, be careful bending it, nice an slow.

 

[Xti04]

When we built my house the contractor had a lineset ran to the room above my garage along with a 12 ga 110 line to a disconnect outside. Turns out I needed a 10 ga supply and the lineset wasnt the correct size. So I ended up cutting out sheetrock and running new power to disconnect as well as cutting lineset off clean and running my own lines on the exterior wall which while not as clean it certainly does the job. Sucked that I preplanned and still had to redo all the work.

 

[Jackfre]

Minot or Miami?

 

[pcmeiners]

"Sucked that I preplanned and still had to redo all the work."

My system required a 14/2 line, but my run to the garage from the main to the garage was long, I ended up-ing it to 12/2. , that was a good catch.
Well I have a welder so I look at the line feeding a box in the garage. Turns out the line feeding the garage is under sized due to the previous owner, I need to run a 2/0 line to the garage.... more expense. Actually if I thought of it, I would not have needed to open the supply panel, as the previous owner undersized/cut corners on everything he did in this house, a real shoe maker, but a consistent one.... no guess work, if the guy did it, it was done wrong.

 

[XS29L9B]

I'm thinking right side, to the left of the window when facing ( corner of shop & house) .
mostly out of the way & well protected etc

That's kinda my thoughts on the matter, too.

 

[XS29L9B]

Thank you for the other responses, as they give good ideas

 

[XS29L9B]

Saw some pretty neat platforms where one could "elevate" the outdoor unit either a foot or two, or lift up higher. But it gives flexibility.

 

[pcmeiners]

What I did to elevate the unit was to use cut up fiber reinforced PVC 4x4 posts (Home depot) used for fencing, not standard cheap non reinforced PVC posts, set in the concrete platform, filled with concrete with bolts set in the wet concrete. Looks neat, indestructible, lasts forever, does not vibrate, good for the next unit you install.
What ever you get, figure the highest snow will likely get as you do not want to shovel snow in blizzard conditions, no less fall leaves buildup.
As to distance from walls, leave plenty of free area around the unit

 

[flippin]

Do not attach to the building with brackets. I installed 2 Mitsubishi mini-splits and absolutely love them. My only regret is the vibration associated with house attachment. Definitely remote installation with consideration for vibration dampening.

 

[pcmeiners]

"Do not attach to the building with brackets."

Yes attaching to a house/gargae wall is asking for disappointment, even if the walls are block or brick. Even when mounted on a 6" thick concrete platform, there are certain frequencies which carry through living space walls. I have a Fujitsu unit, mounted on slab and notice frequencies which are not documented in the literature; heat pumps can be very quiet on DB test, but have objectionable frequencies never the less.

 

[XS29L9B]

Interesting on the wall hangers, but could build something to elevate. I like the idea.

 

[Leaflessshadetree]

I've had no issues at all with my wall brackets. My walls are 2x6 with girts under the steel siding. I also have spray foam insulation.

 

[Jackfre]

If you lived n the frozen N it is a good idea to places the condensing unit where the low winter sun can hit it, so S-SW side.

 

[pcmeiners]

Just a couple pictures, outside unit elevated and the interior line set install. Plastic concrete filled legs embedded in slab 5" down , steel protector plates are are 1/8" thick 2"x6", Old sneaker was an option ...

 

[XS29L9B]

Interesting. Thanks.

 

[My Old Tools]

If you live in a cooling dominated climate, shade is your friend.