Noritz is the first tankless water heater manufacturer to introduce tankless hydronic boilers. The NH Series consists of two models, the NH-2001-DV and NH-1501-DV. Both of these models provide quiet and constant heat to your home by providing hot water to panel radiators, baseboards, radiant flooring and forced hydro-air systems. These units share the same features as with our other heaters; energy efficient, environmentally friendly, and of course the water is always hot whenever you need it. They are capable of offering nine temperature settings of endless hot water for hydronic heating. These tankless hydronic boilers are significantly smaller in size, weighing in at only 66 pounds vs conventional boilers' which typically weigh more than 300 pounds, giving your home more space to enjoy