Someone has asked for an opinion from me about having a "VPhase" unit fitted.
I've only had time for a very quick internet search, and have read some of the info on the manufacturer's site.
The unit (shown in a video on the site that appears to show something with a toroidal transformer or choke linked to what may be a bunch of electronics under a cover. This reduces selected circuits in the house to 220volts, the argument being that EU equipment is designed to run all over Europe at their standard 220 rather than our 240 to 245 volts.
It seems to me that the unit is unlikely to recover its cost before it fails in some way (eg it has a contactor inside that bypasses it when the house draws too much current). It says it works by "Thermal" control. It costs approx £300 plus installation.
He does run some equipment that relies on synchronous motors for accurate speed control. The site doesn't mention frequency at all as far as I can see. His kettle will take longer to boil, I assume.
Any views?