Unhappy with the amount of hot water in the shower? Ever been the last person in the morning to take a shower, only to find out that the three people before and the washing machine used up all the hot water? Wonder why you've run out of water while you freeze during the shortest shower of your life? It could depend on the size, age, and type of water heater you have. First we'll go over the types of water heaters; tankless, direct & indirect water heaters. Direct and indirect water heaters use a tank that stores and heats the water in the tank to be used later. This requires the water to heated and reheated as the water temperature can be maintained for awhile before it drops too low. You might find a tank in your basement that is either near or possibly far from your boiler or furnace. A tank that is close and has piping that runs directly from the the heating system to the tank is a direct water heater. This directly uses the heat from the ...