I would like to install an airconditioner through the wall in my garage. The wall inside is sheetrock on 2x4 studs, the wall outside is brick veneer. I am looking for guidance on the installation. My question is do I need to install a angle iron lintel at the top in the new opening made for the air conditioner? There is roughly 4 feet of brick above the opening. The veneer is also tied to the studs with metal tie strips. If I do need a lintel, is there any reason I can't simply remove the grout from the top brick joint which is at the top of the opening and slip the lintel in from the back side?
Sorry, can't help with the lintel question but one other thing to think about is proper flashing. This could easily become a point for water intrusion. Flashing on top of the a/c case will need to lap up under the wrb behind the brick. I don't see how to do it properly without making the opening larger than the case, installing the case and flashing, and then re-lay the bricks around the case.
That's basically what the mason did in my basement (cmu with brick veneer) when I increased the size of a window to 4' high x 5' wide. I was surprised when he said it was no problem to cut out the brick first and then grind mortar back so he could install the lintel.
The harder part is that you are supposed to take out the brick in a step pattern so the bricks can be cut in half and make a clean edge on the sides (look at your other window openings), and a sloping sill. Then you have to try to match the mortar color.