I'd like to know what WDRP's definition is of a water heater? I bet several here think it is similar to any other tankless for sale on the market. Nice looking slimline case which can replace any standard worn out tankless in the home. In reality IMO all they have is a heating unit capable of heating water; just like my microwave oven does. They don't have a water heater they can take to any manufacturer and ask them to mass produce it. They need a manufacturer who can engineer what they have(heating unit) and turn it into a water heater that can be sold. BIG BIG difference IMO.
Yes, they could be referring to those, who knows? Why not give a brief mention as to what tests are underway and what tests are finished? Why is it always left to speculation?