A tankless gas water heater is a type of water heater that only heats the water when it is needed, rather than storing hot water in a large tank until the time of use. Typically, a tankless gas water heater is installed in the same way that a tank model would be.

It has been common for many years in Europe and in other areas to use a tankless gas hot water heater. However, the the popularity of tankless gas hot water heater has started to grow in the United States recently. These water heaters can be made to powered by either natural gas or propane.

The major benefit of using tankless gas hot water heater is the energy consumption it decreases and cost savings it generates. Because a tankless gas hot water heater does not use energy when hot water is not used, so the energy bill is much lower than the heating tank. In addition, tankless gas hot water heater never ever exhausted because the hot water is constantly heated. In some cases, this means that a person can take a shower and another one can wash dishes at the same time.

In addition to the above benefits, tankless gas hot water heater takes up much less space than tank type. This is very helpful when the living space is an issue. However, the biggest downside of a tankless gas water heater is the initial cost. The installation of the unit, and any upgrading of the plumbing can be very expensive.