When your microwave starts consuming 20% more power than usual, it's about to fail. Your fridge running longer cycles than normal? Compressor degradation. Most people find out only when the appliance dies completely — expensive, inconvenient, and totally preventable.

I built a system that catches this early. Using only the single power meter at your home's entrance.

The Problem With Existing NILM Systems

Non-Intrusive Load Monitoring (NILM) lets you figure out which appliances are running and how much power they're using — without installing sensors on every device. Smart meter data only.

Existing systems do this reasonably well. But they stop there.

They tell you how much energy your washing machine used. They don't tell you whether your washing machine is healthy .

That gap bothered me. Appliances degrade slowly — motor wear, clogged filters, heating element deterioration.…