Tick Tock Vampire Clock

We all know the digital displays and clocks on your small appliances cost money to run, so how do you shut them off? We laboratory tested microwave ovens to find out. The only tip that we guarantee works on every product is to remove the power source. See our blog post on Top Four Ways to Reduce Vampire Power for some simple ways to do this. But are there other ways?

We found that on some models, unplugging the unit and then plugging it in again and not setting the clock resulted in either a blank screen or flashing dots, on some models a single zero appears and there are other variations. Each number in a digital clock is made up of light segments, so each number uses a different amount of electricity – a “0” has six segments and a “1” has just two. Lighting up each segment requires more power, so the less lights you have on your clock screen, the better. If after you re-set your appliance, it flashes “00:00” continuously or streams “PLEASE SET CLOCK” continuously then you are likely using more power than with the clock alone. Wouldn’t it be great if small appliances could be shipped with the clock off, and you could turn them on if you needed another clock in your kitchen? Our calculations show that if all the microwaves Americans will buy this year come with clocks turned off, a coal fired powered plant can be taken off the grid every 3 years.

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