Noritz NR662-OD-NG 140,000 BTU Outdoor Residential Tankless Water Heater (Natural Gas)

Noritz NR662-OD-NG 140,000 BTU Outdoor Residential Tankless Water Heater (Natural Gas)

The Noritz NR662-OD-NG is a high-performance outdoor tankless water heater designed for homeowners who want endless hot water, energy savings, and reliable outdoor operation. With a 140,000 BTU input and up to 6.6 GPM flow, this model is ideal for small to mid-sized homes, cabins, apartments, and accessory dwelling units.

Key Features

• 140,000 BTU/hr burner delivers consistent hot water for multiple fixtures.
• Outdoor installation eliminates the need for venting, simplifying installation.
• High efficiency with a UEF around 0.82–0.84, helping reduce utility bills.
• 6.6 GPM flow rate supports showers, sinks, and laundry simultaneously (varies by temperature rise).
• Durable weather-resistant casing protects the unit in outdoor environments.
• Electronic ignition — no pilot light required.
• Compact wall-mounted design saves space and keeps mechanical rooms uncluttered.
• Reliable safety features including freeze protection, flame monitoring, and overheat safety.

Ideal Applications

• Small to mid-sized homes
• Cabins and vacation homes
• ADUs, guest houses, or secondary units
• Apartments and duplexes
• Outdoor-preferred installations where venting is difficult

Technical Specifications

• Model: Noritz NR662-OD-NG
• Fuel Type: Natural Gas
• BTU Input: Up to 140,000 BTU/hr
• Flow Rate: Up to ~6.6 GPM (depending on temperature rise)
• UEF: ~0.82–0.84 (varies slightly by region)
• Installation: Outdoor only — no venting required
• Water Connection: 3/4"
• Gas Connection: 3/4"
• Dimensions: Approx. 24" H × 14" W × 9" D
• Weight: ~37 lbs
• Ignition: Direct electronic ignition
• Warranty: 12-year heat exchanger, 5-year parts, 1-year labor (residential when installed per code)

Why Buy From United Plumbing & Fire Supply?

• Fast shipping and reliable handling
• Competitive pricing on all Noritz models
• Local pickup and job-site delivery options
• Trusted supplier for both homeowners and contractors

Always confirm installation requirements with a licensed plumber. Outdoor units must meet local code and clearance requirements.