Bosch Therm 18" Natural Gas Tankless Water Heater With 175,000 Max Input BTU, Non Condensing Technology, 150 PSI Max Water Pressure, Energy Star Rated, Electronic Ignition, In Grey

The 830ESNG is another new model from Bosch that offers advanced software, safety and precision controls but requires only 175,000 BTU/Hr input. The 830 ES supports Intelligent Cascading, up to 24 units, so it’s a perfect solution for big commercial applications. It features an electronic ignition system and requires either 3 inch or 4 inch diameter stainless steel vent pipe and can be vented either through the side wall or up through the roof. This heater is Energy Star rated and qualifies for the federal tax credit. Natural Gas Unit.