Am using a Vertical storage water heater for decades, not having any problem. My son says, the hot water coming out is at low pressure/speed and he has to increase the cold water tap flow, to get a good throw from the shower (but that reduces the temperature as ratio of hot : cold water changes). I had a hunch thinking if we changed to horizontal storage heater, the hot water output will flow from increased height (say at least 2 feet above the current level) and increase the pressure quite a bit. What's your take on it?