@kraftwerkturbo it’s hard to tell whether or not your system is affected by the “dirt” in your AC.
There’s a lot to consider including power supplies and even the crap your digital components throw back into your power. Add to that appliances, etc.
Only way to determine if a power conditioner will make a positive difference is to try one. Running your source components into a power conditioner would almost always improve the overall noise floor. Amps are different beasts and I prefer running my amp direct without power conditioner.
I use Puritan PSM156 and it does help in reducing noise floor resulting in quieter background and therefore more details. It does help slightly with my amplifier as well when it comes to reducing noise floor albeit resulting in a slightly less dynamic presentation. So I run my amp direct.