Snake oil!
Snake oil!
The internet has spawned a profusion of these snake-oil sellers now. It used to be that the cost of them having to drive from city to city looking for suckers kept their numbers in check, now they can spend $25/year for a cheap web host and sell them to a bazillion suckers!
I just did an evaluation for someone on another brand, but exactly the same technology (a PFC cap and filter). They were so bold as to post their test results from an independent testing lab in Texas. I think they were assuming that nobody would actually read it, or those that did wouldn't know what it was saying. If you actually read the data, it proved their device didn't work. The report just failed to mention that the meter on the side of your house only reads WATTS, not amps. They did 5 experiments. All of them showed the amps dropping, but 4 out of the 5 showed NO savings in WATTS. 3 of those actually showed the watts going UP! On the one that did show a savings, it was 7 watts out of 449 total, so that's a savings of 1-1/2%. At $200 up front (not including installation) and assuming 11 cents per kWH, the payback time was more than 23 years! I doubt the caps would last that long either.