Noritz EZTR75 199,900 BTU Tankless Water Heater - HCNAC1178-NG
The EZTR75 vents with flexible vent directly through existing B‐Vent with no need to spend time changing existing vent. Water connections are on the top of the heater so now you can use flex lines direct from the top like a tank. 1/2 inch gas line connection to existing line saves time and money.
It is designed to easily convert your 30/40 gallon tank type water heater to tankless technology. This heater can be installed on gas lines as small as 1/2". The EZTR flows up to 6.6 gallons per minute and is Energy Star listed.