Rheem Water Heating, a division on Rheem Manufacturing Company that produces tank-type, tankless and solar units for residential and commercial applications, has unveiled a complete, 18-model lineup of ultra low NOx residential gas water heaters, featuring a newly developed and patented stainless steel radiant burner that slashes emissions to 10 nanograms per Joule, a 75% reduction from previous low NOx models.

The new Rheem Ultra Low NOx Natural Gas Water Heater line is available in three different series: Fury, offering a six-year limited tank and parts warranty; Professional, eight-year warranty; Imperial, 10-year warranty. Tank sizes in each of the series range from 28 to 50 gallons, including tall and short models, with gas inputs of 30,000 to 40,000 BTU per hour. Each of the three series includes high-efficiency (HE) models that couple high performance and lowest operating cost. With an Energy Factor of 0.62, these HE models qualify for most gas utility incentive programs.

Rheem’s Ultra Low NOx line offers a number of important features with benefits that separate it from other residential, gas-fired, tank-type water heaters: environmentally-friendly burner; Guardian FVIR System; special, patented anode design; EverKleen Self-Cleaning System. According to the company’s press release, all models in the Rheem Ultra Low NOx line are high-altitude-compliant, certified for applications up to 10,200 feet above sea level. All of the new products fully comply with Southern California’s SCAQMD (South Coast Air Quality Management District) Rule 1121, which limits the level of nitrogen-oxide (NOx) emissions by residential gas-fired water heaters.