Yes it is possible with residential tankless water heaters! These industry level high quality water heaters can give you hot water whenever you want all day long. The special tankless technique allows the heater to supply hot water in the shortest time span which is not possible from the conventional water heaters used by most of the house owners. Your conventional water heaters will first store the water and then start heating it before supplying it to the taps or showers. This can not only take a lot of time but can also increase your energy bill.
Conventional heaters will heat entire tank at the same time, no matter if the water is to be used by only one person. After your shower, rest of the hot water will remain in the tank eventually turning cold. If you want hot water, you have to heat entire tank every time.
All this can be avoided with tankless water heaters, which heats water simultaneously as it passes through the pipes towards your shower. This means that you will heat only that volume of water which you will use. No storage, no wastage and no fuss!
Not just for residential areas, but tankless water heaters are also available for industries and boats. You can install marine water heater in your boat and enjoy hot water showers, during those long cruises with your loved ones. This is definitely worth trying. Get one for yourself and enjoy!