A/C installed at exterior wall

Have you ever seen the A/C unit installed like this? It is actually touching the exterior stucco wall of the house. This unit is original to the house, so I guess the builder did this! The system works well, but I have to think this restricts ventilation…


BTW - you can’t see it, but there is a concrete pad under there…

I’d mention it restricts air flow but it probably won’t be moved. It looks like it is on the property line as is.

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Larry, you’re right - the property line is very close, and I assume that’s why iy was done. The corner is actually closer than it appears in the photo - it could pretty easily be moved around the corner to the rear of the home. It’s 14 years old, and working great for now, so I doubt anything will be done, but I’ve never seen one installed like this!

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Check the manufacturer’s installation manual for clearances.

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Marcel, I wouldn’t think that checking the install manual would be necessary, in this instance…I could be wrong but I don’t think so. :crazy_face:

Marcel - thanks… for some reason, I didn’t think of it. But, here is what I found,

"When installing, allow sufficient space for airflow clearance,wiring, refrigerant piping, and service. Allow 24 in. (609.6 mm)clearance to service end of unit and 48 in. (1219.2 mm) (above unit. For proper airflow, a 6−in. (152.4 mm) clearance on 1 side of unit and 12−in. (304.8 mm) on all remaining sides must be maintained. "

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Having the manufacturer’s installation instructions could avoid any potential disagreement with the seller.

Remember, the clearances are not just for safety and proper function, they are also to meet advertised efficiency. It may “work” but not as advertised.

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That is so funny because I did an inspection today with the unit only 7" away from the stucco wall. On one of nachi’s training video it shows that 12" is the minimum distance for the unit. Also remember that if it is moved to the back of the house it might make a lot of noise when it cranks up. That was one of the issues at the house I went to today. The second image night help.

A great point! Thanks!

It looks like a zero lot line. There are several of those subdivisions in Kissimmee area

We know on a 14 yr old unit the seller is NOT gonna do jack squat, SO my comment would be along the lines of … “The AC unit was improperly installed and is too close the the structure for good air flow or servicing, and would not meet the installation guidelines of any hvac manufacturer I’m aware of. We recommend moving and relocating the outside air conditioning unit(s) to facilitate servicing and/or provide a better air flow to the coils”.

The buyer was shown the unit, and agreed it needed to be moved… I doubt they’ll ask the seller to do it. I did plant the seed with them that the unit will likely need to be replaced in 4-5 years, and a new unit could be installed in a new location. But they understood this one isn’t likely to be working as efficiently as it could be, They have an HVAC professional in the family, so it should work out!

It’s recommended, a minimum of 12” - 1’ foot clearance on all sides of the HVAC condenser cabinet and 5’ foot clearance above the cabinet.
Read/Post the manufacturer, model and serial numbers. Read installation manual.
Inspectapedia Clearance/Distances for AC/Heat Pump condensers.

Also be aware of unit clearance required when they are side by side.

If the install manual is not stuck in the service panel, pull it up on line and copy to your report. No more discussion needed…