Wow. what a story. "lose there effectiveness??
My Furman is at least 12 years old. I bought it used nine years ago.I also bought a used PS Audio P-600 then too.Still in use. still work great.
Now there IS one small part which DOES stop working. and that is the overvoltage surge protection,(If the power conditioner has this?) if they are a the MOV type which fail if they get put to use. So generally those would be no good after a few years in general But that does not make the power conditioner no good. just if it used those for over voltage, then they need to be replaced.
So my guess is the op is confusing surge protection and power conditioning
My Furman is at least 12 years old. I bought it used nine years ago.I also bought a used PS Audio P-600 then too.Still in use. still work great.
Now there IS one small part which DOES stop working. and that is the overvoltage surge protection,(If the power conditioner has this?) if they are a the MOV type which fail if they get put to use. So generally those would be no good after a few years in general But that does not make the power conditioner no good. just if it used those for over voltage, then they need to be replaced.
So my guess is the op is confusing surge protection and power conditioning