Hello everyone,
Many people in Ukraine have reached out to me with the same problem. They all have private houses or small manufactories and many neighbors use electric heating boilers.
Unfortunately, no one has been able to completely solve this issue. Everyone is addressing the symptoms rather than the root cause—for example, by adding soundproofing. I do not support this approach because it could lead to inverter overheating and, of course, void the warranty.
I got tired of searching for a solution, so I ordered the HF Victron Multi RS Solar 48/6000. It will be delivered in a few weeks, and after installation, I will share the results.