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NR66 Series Residential Tankless Water Heaters

Noritz heaters are well known for their technology, efficiency, and flexible installation options. Their tankless water heaters provide an endless supply of perfectly heated, fresh water every time you use it, and save space, money, and water, making these tankless water heaters well worth the switch from a bulky, tank-style water heater. The high performing water heaters you’re looking for in Orange County are right here at Bill Metzger Plumbing
These tankless water heaters feature:

  • Perfect for apartments, condominiums and townhouses with one to two showers
  • Space and energy efficient – Wall-hung unit with fully modulating burner design precisely tracks the needs of the system
  • 140,000 max BTU’s for up to 8.3 GPM flow at a 35 degree temperature rise – read more about temperature rise
  • Direct ignition means no standby pilot light to waste energy
  • Self-diagnostic onboard computer regulates the burner for more efficient fuel usage
  • Battery back-up compatible
  • Recirculation compatible


Noritz NR66 Tankless Water Heater Specifications:

  • Thermal efficiency: 83%
  • Flow rate: 0.5-6.6GPM – click for flow rate chart
  • Outlet temperature settings: 100-160°F (12 options)
  • Gas connection: 3/4″ NPT
  • Water connections: 3/4″ NPT
  • Water pressure min: 15psi, max: 150psi
  • Gas input min: 20,000 BTU, max: 140,000 BTU
  • Weight: 36 lbs
  • Air supply/exhaust: power vented
  • Ignition: electronic (no pilot light)
  • Electrical supply: 120V (60Hz)
  • Actual electrical consumption in Watts
  • OD Model: NG: 51W, LP: 52W, freeze protection: 141
  • SV Model: NG: 48W, LP: 49W, freeze protection: 141W
  • Actual electrical draw in Amps: less than 2 Amp
  • Operation: 0.4 Amp
  • Standby mode: 0.04 Amp
  • Freeze prevention: 1.2 Amps
  • Dimensions: 20.5″h x 13.8″w x 6.7″d
  • Uses Category III 3″ stainless steel venting


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