Here is the usual RFI location procedure:
Power transceiver using a 12V battery
Check each band and record RF noise levels
Shut off ALL AC power to your residence
Check each band and record RF noise levels
If the RF noise decreased with AC power off, switch AC power back on one room at a time while monitoring the bands for RF noise. If the dominant noise source(s) are in your residence you will be able to narrow it/them down to the room. It is then a matter of unplugging AC powered devices in particular rooms.
Example:
In my small house I located eight RF noise sources. Two ceiling fan lights, A UV water zapper, and five wall wart power supplies. The "fixes" are to leave the ceiling fan lights off when I'm on the air, an FT240-31 ferrite core on the UV water zapper, and replacement of the wall warts with other brands. External RF sources remain and being in various solar power systems in the neighborhood I live with the noise.