What power conditioner will help in my situation?

Power condition will clean it up but you'll have to choose wisely as most lag the current, which in turn makes the amp work harder and runs hotter.

I ran a dedicated circuit, bought a power conditioner for my audio/video components, and bought an 8' power cord for my amp. End result is power conditioner cleaned up all noise on the audio/video components and the amp running directly off the designated circuit has no noise.

I didn't post what brand conditioner I bought for a reason...it was Chinese built! *lmbo

I wanted to add to my previous post. It would cost effective to replace the ceiling fan with a decent newer model first. You may not have to add anything else to your entertainment system.