[beenthere]

Most units want 24 inches.

 

[zootjeff]

Most units want 24 inches.

The recommendations for my unit as well as the code complete book I got said 12" from the wall on two sides.

 

[daveplot]

I'd like to put up the very short block wall on the right side about 12" away from the unit. It would be 2' tall, and removable in the event the unit needs to be repaired. So if 12" is enough for airflow, i'm all set. But I want to make sure the unit would have enough air flow.

 

[zootjeff]

I'd like to put up the very short block wall on the right side about 12" away from the unit. It would be 2' tall, and removable in the event the unit needs to be repaired. So if 12" is enough for airflow, i'm all set. But I want to make sure the unit would have enough air flow.

According to my code book, that is fine. One issue you may have is the electrical disconnect. It is suppose to be free from obstruction and access. Not blocked by the unit. Your retaining wall may make it harder to get to that box which may create an inspection problem down the road if you further close it off.

In terms of airflow, you are probably fine with the 12" clearance.


-Jeff

 

[beenthere]

The recommendations for my unit as well as the code complete book I got said 12" from the wall on two sides.

I didn't say all units/brands.

 

[Marty S.]

Lennox is 12" from a wall on one side and 3' on the rest.