RESULTS--THE BIG SURPRISE!
So, I turn the thing on. A few minutes later the air is cold, but wait a minute, where's the compressor noise? I turned it to fan-only and the sound didn't appear to change. I turned it back to cool and finally, by listening very carefully next to the window, I noticed a very slight hum added to the fan, which is the quietest A/C fan I've ever heard. It quickly cooled that corner of the apartment, and even on low the air reaches 15 feet into the kitchen, which chills nicely too. On high, there's very normal sounding but unobtrusive fan noise; on low, it's amazingly quiet. I can talk on the phone right next to it, don't have to turn the TV up, and can hardly hear it from across the room.
The fins don't do a great job of directing the air left and right, but I've yet to meet a window A/C that does better. However they do a good job of directing air upwards when you tilt the fin assemblies. The unit doesn't project air very strongly. It's enough to reach the very hot kitchen 15 feet away but not enough to circulate air well in the room on its own. My ceiling fan does that for me; a small fan directed straight at the ceiling of your bedroom will do the same for you. Because this is a desert I don't get sloshing noises, though it can feel a little humid if the compressor cycles off for a long time and the fan is running.
I'm going to get another of these to replace the Sharp unit; that'll give me a total of 12,000 BTU's for a tiny fraction of the noise. Now that I know how incredibly quiet this thing is I'll also get one for the bedroom to replace the 8,000 BTU FAA084P7A, which is way too loud.
TIPS (YOU KNOW YOU WANT THEM!)
WAIT 24 HOURS!! Noone at the store will tell you this, and I don't even think it's in the user manual, but start off by making sure the compressor lubricant is in the bottom. Otherwise you're likely to permanently damage the compressor the minute you turn it on, which means it'll be louder and less effective. If you're absolutely, positively sure that the unit was stored and transported right side up, go ahead and put it in. If not, DON'T TURN IT ON until it's been sitting right side up for at least 24 hours.
Reduce Vibration:
All window A/C units have compressors and fans, and all compressors and fans vibrate. The trick is to minimize how much vibration is transmitted from the metal A/C housing to the window and wall, both of which can vibrate like a drum.
The unit comes with stick-on strips of open-cell foam to 1) reduce vibration and 2) seal off drafts. I always upgrade this to stick-on closed-cell foam tape like M-D Building Products Sponge Rubber Tape, 3/8-by-1/2-Inch-by-10 feet, Closed Cell, Black #06619 (you can find this stuff at any hardware store). I put it at the bottom and top of the metal A/C housing and anywhere else the housing contacts the window or wall. You'll be amazed at the difference this little improvement makes.
The Right Angle:
Make sure the unit is installed at the correct angle. Use the slots in the housing that the accordion thingies fit into; they should be exactly perpendicular. The top of the housing may tilt down a little even when the angle is right, and the plastic front is rarely vertical; that's OK, they're designed to be that way. NOT doing this can make the fan and compressor louder or cause the sloshing problem people have if the thing is tilted so that water hits the fan. I've never had a problem with this in a normal wooden sash window, but if it doesn't automatically level itself, use shims at the top or bottom to even it up.
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