It’s been a while since I posted a “What in the world?” picture. Here’s one I shot Wednesday. Not that tough I suspect. Leave your guesses in the comments.
[Answer after the jump]

Yes, as you all surmised these are air conditioners. A whole lot of them.
They are being installed on top of the Broadstone Enso Apartments in Portland’s Pearl District. All 152 units, which range from about 560 sq. ft. to 1330 sq. ft., have walk-in closets, full-size washer/dryers, and their own air conditioner. This lucky guy (below) gets to solder every one of them.

ajg
Looks like a whole row of Air Conditioning Units to me.
D
Nov 07, 2009 @ 4:19 am
ajg
I see Dad has already sent in an answer – that’s okay – that’s what I thought, too. M
Nov 07, 2009 @ 6:49 am
smg
M&?D are right but they also look like the sub-woofers for a young man’s car.
Nov 07, 2009 @ 7:28 am
Granny
I agree with Mum and Dad – what else can it be?
Nov 07, 2009 @ 8:11 am
admin
Yep, you’re right.
Nov 07, 2009 @ 8:53 am
Construction photography – Letters Home
[...] a lot of everything. With 152 apartments, the six-story building will need 152 washer/dryer units, 152 air conditioners, 152 bathtubs, and so [...]
Nov 07, 2009 @ 10:28 am
Audrey
Doesn’t that look like a fun job! J/K
Nov 09, 2009 @ 2:41 pm