I just discovered tankless water heater technology while browsing alternatives to gas based water heating, more specifically the ones designed in the United States by EcoSmart.
I have been trying to find if these tankless water heaters can be installed and used in Europe (more specifically, in Western European countries), but until now I've only found a few of them on UK's Ebay. My country's electrical appliances sellers do not seem to even know about this type of water heating.
Currently my knowledge about this is also very limited, therefore if I purchase one of these will a professional electrician be able to install it directly or will it require a specific transformer?
And is the warranty valid in Europe? They allow a fewer time warranty for "outside of continental US and Canada" but it needs to be installed within 30 days of purchase and their form must also be filled out and sent within this time frame with an installer license... So does it need to be a US installer license?
Side question: Is there a reason why this technology does not seem to be popular in European countries?