What power conditioner will help in my situation?

PSAUDIO P10 works well for me with the same problem

I'm glad I have user adjustable electronic switch board with more dosens of combos how to customize outlets and power.

How about a regenerator?

Have a qualified electrician run a dedicated line or two. It really doesn't cost that much to do so. They really do know what they are doing and how to do it. worst case, run on wall wiring in on wall conduit from another circuit (preferrably one not used frequently) to your listening room.

enjoy

Clean up the line AT the ceiling fan.
If you can get at the wiring above the fan add some ferrite claps on each of the wires.
Two on each would be good.
Then at the wall switch, in the wall, add more.
This will really cut on the electrical feedback.
So you will have less to worry about at the wall socket for your equipment.
I have done this to my refrigerator.

The sort of ferrite which clip on would be easy. i used 1" barrel ferrites placed on the wires and wrapped the frig cord around another.
Also there are small in wall conditioners which fit in a standard AC duplex spot. Maybe you could add one of those to the FAN. And kill the fan problem in the fan part of the circuit. Either in the cieling or at the fan switch.