OK, the tech came out and is going to put the condenser on isolators. I would like to run something by you guys. He states that the Trane heat pumps heat better and run at higher pressures and that the trade off is that I may just hear the compressor pumping through the lineset. He also thought that having the lineset secured to a stud in the wall could cause the problems. I thought have the lineset unsecure could cause these resonance issues. Comments?