Get energy-efficient, endless, hot water at a low installation cost.
Noritz's Energy Star rated NRC661 is the newest efficient condensing heater with a half inch gas line. It features the same energy-saving condensing technology used with other eco-TOUGH Series heaters. The NRC661 features an Energy Factor of 0.91 for natural gas. These ratings are almost 10 points higher than those of a comparably sized, conventional tankless heater, and about 30 points higher than standard, tank-type gas-fired water heaters.
With a maximum input of 120,000 BTUs per hour, using a 1/2 inch gas line up to 120' long. A more accurate interpretation of the National Fuel Gas Code allows the use of the gas pipes with a smaller-diameter for inputs of up to 174,000 BTUh, for as long as the water column pressure in the unit inlet is at a minimum eight inches.
|Home Size||Southern climate: 2 baths
Northern climate: 1.5 baths
|Unit Dimensions||20.5” (H) x 13.8” (W) x 6.7” (D)|
|Gas Consumption||Min: 15,000 btuh
Max: 120,000 btuh
|(NG & LP)||Natural Gas/Propane|
|Capacity Range||0.5-6.6 Gal./min.|
|Energy Factor||0.91 (NG) 0.93 (LP)|
|Temperature Settings||100-140°F (In 5°F intervals) (9 Options)|