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Ruud Ultra RUTGH is a series of High-Efficiency Condensing Tankless Gas Water Heaters designed for continuous hot water


  • .93 UEF (.95 - .96 EF) with stainless steel condensing heat exchanger



  • Exclusive! Water Savings Setting - upon activation, this setting can save up to 1,100 gallons water/year1 by reducing flow at the tap until set temperature is achieved (optional)
  • Industry Best! Low Flow Activation – Minimum flow rate of .26 GPM and minimum activation flow rate of .40 GPM ensures hot water even in low demand situations
  • Recirculation Pump Kit-Ready - Providing faster hot water at the tap and savings of up to 12,000 gallons water/year


Easy Installation and Service

  • Vent with 2", 3" or 4" PVC
  • Built-in condensate neutralizer
  • 1/2" Gas line compatibility
  • Exclusive! Maintenance Notice Setting – Alerts homeowner, after 500 hours of use, to call for service check (optional)
  • Self-diagnostic system for easy installation and service
  • High-altitude capability – up to 8,400 ft. elevation above sea level



  • For higher demand applications, easily link multiple tankless units to operate as one system: 2 units - EZ Link Cable. Up to 6 Units - MIC-6 Control Board. Up to 20 Units - MIC-185 plus MICS-180 manifold control assembly


Low Emissions

  • Environmentally Friendly ultra low NOx burner meets SCAQMD rule 1146.2 requirements



  • Exclusive! Guardian OFWTM overheat film wrap – prevents dangerous temperatures and provides industry best side-to-side clearance of 1/2 inch
  • Exclusive! Hot Start Programming – Minimizes cold water bursts by staying in ready-fire state for back-to-back hot water needs



  • Digital remote control and 10 ft. of thermostat wire included – shows temperature setting and service codes
  • Supplied with a 120-volt power cord (indoor models only)
  • Industry Best! Freeze protection to -30°F
  • Maximum water temperature is 140°F. For higher temperature applications, upgrade kits are available



  • 12-Year heat exchanger – residential, 5-year heat exchanger – commercial, 5-year parts and 1-year labor

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