Reaching out to the experts today to ask about location of installation of a mini split.  I'm a realtor, not an HVAC contractor.   I'm working on a "flip" that will be more energy efficient than most, think HPwES.  For the separate detached casita we are replacing a window AC unit placed in a sealed off window with a new 3 x 3 window and a mini-split.  An HVAC contractor is proposing the muni-split to be installed on the same south facing wall as the newly installed window.  

The picture belows shows the entire lot and arrow pointing toward the detached casita.  It looks attached, except that the white patio covering does not have walls.  It backs up to the outside laundry room which backs up to the carport and ensuing driveway. 

An HVAC contractor has proposed it best to install the new window and mini-split on the same south facing wall of the casita.  

My idea is to install  the mini-split on the west wall.  Your first thought is why the west wall.  The west wall is in the middle of the casita, across from the front door.  There is a bathroom inside this unit, to the right of the entry door.  The entry door ison the east/right side of the casita.   I also think of air flow and how one affects te other?  We have wonderful winters in Arizona where we can sleep with the windowss open.  We could expand the window size to 4 x 4 if the mini-split was on another wall. 

My question to you all is - which wall would you install a minisplit?  

On the same south wall where the window is located; 

On the west wall to be more centrall located; or 

On the east wall to the left of the entry door?  

Tags: #Airflow, #HVAC, #minisplit, #remodel

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I agre that the south wall would be shaded for the warmer summer months, but it won't look right aesthetically having a window and a wall mount min-split on a 7' wall.  I think the wider west wall woudl be better. We can place it low enough, 12" below, and it woudl look fine.  

Thank you all so much for your time and talent.  I appreciate your wisdom! 

Thank you!  Most people think cheap when they hear the word "flip."  While cost is a factor, our mission is not cheap but efficient.  We're also install all new ducts in the meain house, new HVAC roof mount.  Removing an old evap cooler on the east side of the house and all of that ductwork; installing all new appliances; hopefully sun screens.  

I think we are going with the west wall given that it will be on the long wall.  I may report back on a separate post the outcome as I've been going back and forth with an energy auditor and HVAC company on best practices for this location.  

Thank you for your comments!

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