ZeroWattic Power Saver is a plug-in electricity device marketed for homeowners who want to improve the way electricity flows through their homes. The product is promoted as a simple, maintenance-free solution that can be plugged into an outlet and left running in the background.
However, it is important to separate the product's marketing claims from what has been independently established. NIST explains that residential power-factor correction devices generally do not reduce a typical household's electric bill because residential billing is based primarily on real energy consumption rather than reactive power.
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