Product review (5 stars): After having suffered from my very expensive refrigerator needing a ...
After having suffered from my very expensive refrigerator needing a $1,000.00 repair because the circuit board burnt out and the compressor seized from  a series of brownouts I purchased 3 of these. one for my repaired fridge of course another for my chest freezer and the third for my washing machine. I have not had any electrical problems since buying these so I can not be sure how well they will work. When you first plug them in it takes a little bit to turn on, That is a feature so if there is an interruption in the electric service it will wait 3 minuted for the electric to become stable again. that gives me peace of mind  because the fluctuation of service is what caused my fridge to fail. I would say this you paid a lot of money for your appliance why not protect it. a wise man once said you don't know what you need until you need it, i say why wait.