HOT ! Noritz NCC300-DV-NG 300,000 BTU Indoor Commercial Condensing Tankless Water Heater (Natural Gas)

Noritz NCC300-DV-NG 300,000 BTU Indoor Commercial Condensing Tankless Water Heater (Natural Gas)

The Noritz NCC300-DV-NG is a powerful 300,000 BTU commercial-grade condensing tankless water heater engineered for high-demand environments. Designed for indoor direct-vent installation, this unit delivers reliable, continuous hot water for restaurants, hotels, gyms, apartment buildings, and multi-unit facilities. With advanced condensing efficiency and commercial stainless steel heat exchangers, the NCC300-DV-NG provides exceptional performance and long-term durability.

Key Features

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  Massive 300,000 BTU output for the highest-demand commercial applications.


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  High-efficiency condensing design reduces operating costs and maximizes energy savings.


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  Commercial-grade stainless steel heat exchangers built to withstand heavy daily usage.


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  Indoor direct-vent configuration with PVC, CPVC, or polypropylene venting compatibility (verify local code).


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  Continuous hot water production suitable for multi-fixture and multi-unit applications.


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  Cascade-ready: combine multiple units to support large facilities and commercial installations.


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  Compact wall-mounted footprint saves valuable floor space compared to bulky tank systems.


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  Advanced safety and diagnostics including freeze protection, flame failure detection, and overheat monitoring.

Ideal Commercial Applications

• Hotels & hospitality buildings


• Restaurants & commercial kitchens


• Gyms, spas, and locker rooms


• Laundromats and salons


• Multi-family buildings and commercial apartments


• Any project requiring high-volume continuous hot water

Technical Specifications

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  Model: Noritz NCC300-DV-NG


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  Fuel Type: Natural Gas


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  BTU Input: 18,000 – 300,000 BTU/hr


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  Thermal Efficiency: ~96–98% (condensing)


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  Application: Indoor, commercial-grade


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  Installation Type: Direct-vent


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  Heat Exchanger: Stainless steel dual-exchanger system


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  Water Flow Rate: High-volume capacity (varies by temperature rise)


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  Voltage: 120V AC


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  Venting Options: 2\" or 3\" PVC/CPVC/polypropylene (varies by code)


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  Cascade Capability: Yes — multi-unit linking supported


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  Approx. Weight: 80–90 lbs (varies with packaging)


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  Warranty: Commercial warranty — typically 5-year heat exchanger, 5-year parts (verify per region)

Why Buy From United Plumbing & Fire Supply?

• Competitive pricing on commercial water heaters


• Fast and reliable shipping


• Local pickup and job-site delivery options


• Expert support for commercial tankless applications

Always verify installation requirements with a licensed professional. Proper venting, gas line size, and commercial setup are required for safe operation.