Easy Installation

  • PVC Vent runs up to 70' (2"), 150' (3")
  • Easy set up with full-text digital display and no dip-switches
  • Field gas convertible from natural gas to LP- conversion kit included

Ready for Retrofits

  • Allows flex venting through existing B-vent up to 50'
  • 1/2" Gas line compatibility (subject to local code)
  • Approved for installations in ManufacturedHome (Mobile Home) environments

Key Features

  • Stainless steel Primary and Secondary heat exchangers provide increased efficiency and durability
  • Hot-start programming™ ensures the unit is in a ready state between back-to-back usage, avoiding any cold water bursts –Ruud® Exclusive!
  • Built-in Recirculation pump for instant hot water at the tap (SR models)
  • Built-in EcoNet® wifi capability for direct control from your device (optional for S models)


  • .96 UEF – ENERGY STAR® Rated
  • Save up to 33% per year in energy costs
  • Qualified for local utility rebates
  • Built-in WiFi

Energy Guide Details



RUTGH-SR Super High Efficiency Condensing Tankless Gas Water Heater with Recirculation Pump


15 Year Heat Exchanger - (w/ registration)

12 Year Heat Exchanger - (w/o registration)

5-Year Parts | 1-Year Labor

KwikComfort® Financing can help make your purchase even easier.
Ruud makes it easy to find a financing option that works for you! With many options and benefits available, KwikComfort Financing is the best way to get the home comfort you need without the wait.

  • Applications made easyWe'll help you avoid lengthy contracts, headaches and hassles.
  • Kwik credit decisionsYou'll get an answer to your application within minutes.
  • Fast credit for the futureFinance your Ruud equipment and anything you want to add later.
  • Reduced interest/fixed paymentsGet low interest and fixed monthly payments until the purchase is paid.
  • Minimum monthly paymentTake advantage of convenient monthly payments that fit your budget.
  • Deferred interest/no interestEnjoy interest-free payments as long as the balance is paid by the due date.