On holiday in France the farmhose we stayed in had a giant (2m high) electric water heater in the cellar. It fed mains pressure hot water to the house above. The owner said it was great and the bills weren't high. My old gravity fed indirect effort which heats off a gas boiler could do with replacing. I'm fortunate to have a cellar, one of these giant things would be perfect. The only references I can find to electric water heating are the good (ie bad) old immersion heater.
Can anybody point me to websites for something better?
Neal