Key points:

* Uses new solid state microwave generator that is more efficient than magnetron used in microwave ovens

* Claimed 84% efficient, with 12% waste heat recycling = total efficiency of 96%

* Drop-in replacement for gas boiler, possibly only some electrical work needed

* Still requires tank as it does not do instant boiling

* UK is phasing out gas powered water heaters in new homes by 2025

* Electrical heaters currently cost more to operate than gas

* Product is currently being prototyped with trials in EOY 2022 and launch 2024

Company website is here: https://www.heatwayv.com

Upvoted to see if anyone here might know how this possibly could be any improvement over plain resistance heating, which has an efficiency of 100%.

Came here to ask exactly the same question. If there is any benefit over a straight resistance heater, it can't be discerned from that article.

Their picture of "emissions" is also dubious/amusing. If it's from natural gas, what you see in that photo is basically steam.

CO2 is invisible.

The smell of snake oil is pretty strong with this.