Noritz NCC300-DV-NG Commercial High-Capacity Condensing Tankless
Noritz NCC300-DV-NG Commercial High-Capacity Condensing Tankless Review
The Noritz NCC300-DV-NG is a commercial high-capacity condensing tankless water heater. "NCC300" identifies 300K BTU output in Noritz's commercial line.
Specs: 300,000 BTU natural gas input, UEF 0.95 condensing, 15.0 GPM at a 35°F rise, dual stainless heat exchanger with reinforced commercial components. PVC condensing venting up to 100 feet.
The 300K BTU class is sized for substantial commercial applications: restaurants, large salon/spas, multi-family residential, industrial process. The 15 GPM rated capacity handles continuous high-demand commercial cycles.
About $4,500 unit, $7,500-$10,000 installed depending on commercial gas line and venting work. Right buyer: commercial application requiring high-capacity tankless beyond residential 199K BTU class.
- On-demand operation at 15 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 15 GPM output — serves 3+ simultaneous hot-water fixtures in most US climates
- Requires dedicated 300K BTU gas supply line — undersized gas piping is the leading cause of flow-rate shortfalls