Electricity Monitors

I am interested in monitoring my electricity usage.

More specifically, I'm curious if monitoring my refrigerator can indicate potential problems with my refrigerator, so that I can be proactive and replace an older refrigerator with a sales price frig.

This would make me much happier than my normal process of the frig conks out and ruins everything in the frig and then I frantically try and replace it at whatever price refrigerators are currently selling for.

I also thought I saw posts on electric monitors previously but have been unsuccessful in searching for the old threads on this site.

Any help you can provide is appreciated.