I got two units, a 3 and a 4 ton 13 seer R-22, installed by one of the companies the OP mentioned for $6K even. The house was pre-plumbed. I picked one of the cheaper brands that they carried. The coil runs a bit noisy, but when the ac is running I have no business being outside so that has no effect on me. As for the efficiency, I didn’t think I would use it enough to justify paying for a more efficient one.
BTW., I would seriously consider the wall-mount single room ac if I didn’t already have central ac. I think the single room ac is much more energy efficient – cool the room you’re in and not the entire floor.
