These are water heaters for domestic water, meaning for heating your home's drinking, washing and bathing water. Tankless water heaters, also known as on-demand or continuous flow water heaters, only heat the water when needed, which is beneficial. When water flow is detected the water heater turns on, and when the demand for hot water ceases the unit shuts down to conserve energy. This is much more energy efficient than the traditional tank-style water heater which keeps all of the water in the tank hot at all times. Other benefits of tankless water heaters are that the hot water supply is endless so you'll never run out of hot water, and they take up much less space than a tank-style water heater.

There is an alternative use for these tankless heaters as well, which is to heat your home when combined with a hydronic air handler.

Select if:

• You are adding or replacing a tankless water heater.
• You would like an energy efficient water heater that only heats water when needed.
• You would like an endless supply of hot water; tankless water heaters never run out of hot water because they heat the water on demand.
• You are interested in qualifying for an energy efficiency tax credit.  Some of these products may qualify for a tax credit of 30% of the cost, installation supplies and labor up to $1,500.

Select if:

• You need accessories for tankless water heaters such as remote controllers, recess boxes, and termination kits.

Select if:

• You are have or are purchasing a Rinnai interior tankless water heater and need venting materials to vent the intake and exhaust to the outdoors.