Noritz NRC661-OD-NG 120,000 BTU Outdoor Condensing Tankless Water Heater (Natural Gas)

Noritz NRC661-OD-NG 120,000 BTU Outdoor Condensing Tankless Water Heater (Natural Gas)

The Noritz NRC661-OD-NG is a high-efficiency outdoor condensing tankless water heater designed for reliable residential hot water delivery without occupying indoor space. With a 120,000 BTU input and advanced condensing technology, this unit delivers continuous hot water while maximizing energy efficiency.

Key Features

• 120,000 BTU input ideal for small to mid-sized homes and moderate hot water demand.
• Outdoor condensing design eliminates the need for indoor venting.
• Up to ~6.6 GPM flow rate depending on temperature rise.
• High efficiency operation with condensing technology to reduce fuel usage.
• Lower exhaust temperatures compared to non-condensing outdoor units.
• Built-in freeze protection for outdoor installations when powered.
• Electronic ignition — no standing pilot light.
• Compact wall-mounted design for exterior wall installations.

Ideal Applications

• Single-family homes with 1–2 bathrooms
• Apartments, condos, and ADUs
• Homes where outdoor installation is preferred
• Projects looking to avoid indoor venting

Technical Specifications

• Model: Noritz NRC661-OD-NG
• Fuel Type: Natural Gas
• BTU Input Range: 18,000 – 120,000 BTU/hr
• Maximum Flow Rate: Up to ~6.6 GPM
• Installation: Outdoor only
• Efficiency / UEF: ~0.93 (condensing)
• Condensate Drain: Required
• Water Connections: 3/4"
• Gas Connection: 3/4"
• Electrical: 120V AC
• Approximate Weight: ~60 lbs
• Warranty: 12-year heat exchanger, 5-year parts, 1-year labor (residential)

Why Buy From United Plumbing & Fire Supply?

• Competitive pricing on Noritz tankless systems
• Fast shipping and secure handling
• Local pickup and job-site delivery options
• Experienced support for residential and contractor needs

Always verify outdoor clearances, freeze protection requirements, condensate drainage, and local code compliance with a licensed installer.