Quote Originally Posted by engineerdave View Post
I thought this looked cool, haven't seen one in real life yet...
www.turbocor.com
I went to a training seminar on those a couple years ago. Got to play with one that was cut open so we could spin the compressor by hand... Then I never really had to work on one, though I've seen them in operation. They're extremely quiet. You hear a little compressor whine and the refrigerant rushing through the system. They make for very quiet mechanical rooms.

They're definitely expensive, but they're also extremely energy efficient. It's a tough call for a lot of companies between a turbocor compressor and a screw. Screws are cheaper, turbocors are more efficient. If the turbocors were a little cheaper I think we'd see a lot more of them out there. I wish there were more of them out there. They sure are easy to be around while in operation.