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Your Home Is Full of Energy Vampires. This $12 Meter Helped Me Find the Biggest Ones

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Why This Matters

This article highlights the often-overlooked issue of energy vampires—devices that consume power even when turned off—which can significantly increase household energy bills. Using an affordable $12 power meter, consumers can identify and eliminate these hidden energy drains, saving money and reducing their carbon footprint. This awareness encourages smarter energy habits and promotes more sustainable living practices within the tech industry and households alike.

Key Takeaways

Most of us assume that switching something off means it stops using power. It doesn't. Appliances, devices and home electronics continue using electricity in standby mode -- and according to the US Department of Energy, that sneaky power draw costs the average household roughly $100 a year.

Your home is harboring energy vampires in nearly every room -- and they're quietly draining your wallet. To find the worst in my home, I ordered a $12 power meter from Amazon and tested the passive power draw of nearly every device and appliance I could -- 18 in total.

The goal? Find which of them wastes the most energy when off and whether it's worth unplugging the worst offenders when not in use. The winner (worst offender) shocked me; an unassuming piece of TV tech that nearly every home has.

How I tested to find energy vampires

There were a few limitations to the project, the most notable being that I couldn't test my washer, dryer or oven. Those appliances use large 240-volt outlets and the power meter I bought only works with standard NEMA 5-15R outlets. I also wasn't able to properly test my fridge because there's no way to power it down while it's plugged in.

That said, I did test virtually every other device in my house that could be turned off or put into a sleep or standby mode. I went through my house, testing every appliance and device, including the exterior LED light strips I recently installed.

Common household energy vampires

I decided to catalog my results room by room. All told, I ended up testing tech in my home office, living room, kitchen, bedroom and the light strips outside. This is what I found.

The energy meter only works with AC outlets so I wasn't able to test 240-volt appliances, like washers and dryers. Alan Bradley/CNET

Home office

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