Noritz’s EZTR40 residential condensing tankless water heater is designed to replace a conventional 40-gal. tank-type water heater for two-bath residences in warm-weather climates. Measuring 18.3” wide by 27.2” high by 9.4” deep, the unit weighs 50 lb. It vents with 2”, flexible polypropylene tubing that is threaded directly through the existing B-vent; water connections are located on the top; and it uses the same 1/2” gas line used by the old tank unit. It includes a step-by-step manual that gives simple, visual instructions on how to install the unit. Noritz America Corp.