I had Mr. Sparky come out and explain the energy crusher. Scott Bryant pulled out a meter showing the amount of electricity hitting each outlet and then put the energy crusher into the same outlet and the meter showed a substantially lower number. I bought two of them for my house. I think I will save money in the first year alone and in the years after that it will be a lot more. Anything to help reduce the electrical bill is a good thing even if it is a breakeven in the first year, I still think it is going to be more but I am very happy with this purchase.