I rent a house with an electic immersion heater that runs from Economy 7 at night and has a 1hr boost switch for daytime use. The water used to get scolding hot, which, although arguably dangerous, was great as it meant only a small quantity of hot water together with lots of cold water was required for a bath. The element and thermostat has recently been replaced (fitted at top of tank) and now, although the water is very hot, there does not seem to be so much of it so by the time a bath has filled the hot water has become luke warm and no cold water is needed. This means 1 hot bath and that's it for the day. I suspect the water does not heat up to such a high a temperature as before. The thermostat (manufactured by BACKER)is on its max setting and is 18" which is the same length as the previous one (PULLIN). I do not know the length of the element but the tank is about 30" so I guess the element would be 27". The element has a thermal cut-out device which I do not remember the old one having. Perhaps this is limiting the temperature. What are the implications of bypassing this device? Do different makes of thermostats have higher temperature settings? Any other suggestions/ideas?