[Rathji]

So my grandparents are visiting for the day and brought this EMI (electromagnetic interference) monitor to test my house.

They claim several positive effects from installing a EMI filter like health related and energy savings. Obviously, I am not concerned about the health stuff, but I am wondering if there is any possibility of the filter, which is supposed to reduce spikes in the electricity, saving energy in any meaningful amount.

Would it be any different than a power conditioner? Obviously, I can't get any answers from them, because they are just relying on something they tag online and are taking as gospel, without understanding how it supposedly works.

I am sure if I had a few minutes online A I could figure this out but was hoping someone on CP would have an immediate answer that I could use as a basis for discussion before they had home after dinner.