Noritz NCC1991-DV-NG Commercial Condensing Tankless Water Heater
Noritz NCC1991-DV-NG Commercial Condensing Tankless Water Heater Review
The Noritz NCC1991-DV-NG is a commercial-grade condensing tankless water heater in Noritz's commercial line. The "NCC" identifies the commercial condensing series; "1991" reflects ~199K BTU output rounded. Suitable for light commercial applications and very-large residential.
Specs: 199,000 BTU natural gas input, UEF 0.95 condensing, 11.1 GPM at a 35°F rise, dual stainless heat exchanger, PVC condensing venting. Commercial-grade build with reinforced internal components for higher cycle counts. 12-year warranty on heat exchanger.
The commercial positioning differentiates from residential NRC line: heavier-duty cycle ratings, more robust gas valve, longer expected service life under heavy commercial use. For residential applications, the NCC delivers comparable performance to the NRC at slightly higher price point — commercial-grade advantages aren't typically meaningful for residential cycle counts.
About $2,800 unit, $4,500 installed. Right buyer: light commercial application (small restaurant, salon/spa) or very-large residential (5+ bath home with overlapping demand).
- On-demand operation at 11.1 GPM — no standby heat loss; unlimited hot water if demand is within flow-rate capacity
- Strong UEF 0.94 efficiency — approximately 20% lower annual operating cost vs 0.62 standard
- 10-year warranty — solid above-average coverage for this class
- High 11.1 GPM output — serves 3+ simultaneous hot-water fixtures in most US climates
- Requires dedicated 200K BTU gas supply line — undersized gas piping is the leading cause of flow-rate shortfalls