Thanks for the reply Wg,
I finished installing a new 14,500 BTU window unit last weekend. I think there was confusion as to where I was going to install it. I installed the unit to the right of the far upper window, replacing the dual fan in the picture. So it is not facing a nearby wall. It effectively cools the living room/dining room/kitchen/entry way/ and if one of the facing bedroom door is open, it will send some cool in there as well. Unfortunantly, this location puts it on a West wall so it does get some late afternoon sun. It is close to the eve and there are trees providing some shade.
The North side of the house receives less sun, so remains cooler than the South side, so no AC is really needed back there. I live in bay area, so it stays in the upper 80's most of the summer... and cools off at night.
The 5000 BTU unit behind the couch, was too small and only cooled your feet, too low (was there when I bought the house). So I will be removing it soon, so I can put the couch closer to the wall.
To install the new unit, I ran conduit outside from the main breaker panel, to the outside wall. Brought in 2 separate 110Volt feeds, one for the AC, and one for my entertainment center. Currently had no ground wires for living room outlets.
I was surprised at the amount of effort in the design of the unit for low noise. There must have 15 additional parts. The unit slides in and out of a separate metal shell that you install first. The unit floats on foam and rubber inside the shell, not metal to metal contact. Copper tubing had rubber attached at different locations for noise damping.
Quite pleased with the install, and low cost. $349 for the AC unit, ~$50 for electrical install.
Central air would have been $3k+