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Super High Efficiency Plus 10 GPM Residential 180,000 BTU Natural Gas Interior Tankless Water Heater

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  • Enjoy endless hot water
  • Less space for heating gives you more space for living
  • Includes isolation and PRV valves; no additional purchase needed
  • View More Details
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Return this item within 90 days of purchase. Read Return Policy
Product Details

About This Product

Welcome to ultimate efficiency. With technology that operates only when hot water is needed, super-efficient heating coils, no pilot light and no storage tank to heat and reheat water, you save on energy and utility costs. In fact, Rinnai Tankless Water Heaters use up to 40% less energy than a traditional tank water heater. Plus, with premium technology, increased energy efficiency, an improved Home Energy Rating System (HERS) Index Score and optimized LEED eligibility, our tankless solutions can increase your home's value. You can even qualify for energy efficiency rebates and tax credits. It's a smart investment for now and the future.

Highlights

  • ENERGY STAR qualified with Uniform Energy Factor of 0.93
  • Equipped with Rinnai Circ-Logic - pair with an external pump to reduce wait time for hot water via scheduled or on-demand recirculation
  • Save time with hot water whenever and wherever you need it, any size home, even for simultaneous uses at multiple fixtures
  • Save energy and reduce utility costs by operating only when hot water is needed
  • Temperature lock function prevents accidental or unauthorized changes to water temperature
  • Complies with South Coast Air Quality Management District 14 ng/J or 20 ppm NOx emission levels
  • Wi-fi ready
  • Residential warranty: limited 15-year or 12,000 hours on heat exchanger, 5-year on parts, 1-year on labor (5-year optional on labor); commercial warranty: limited 8-year or 12,000 hours on heat exchanger, 5-year on parts, 1-year on labor (2-year optional on labor)
  • Rinnai is changing the language in its warranty terms and conditions found in the current User Installation manuals; The existing statement will be replaced by the following: "This Limited Warranty applies only to products that are installed in the United States and Canada. Improper installation may void this Limited Warranty; It is recommended that a trained and qualified professional who has attended a Rinnai installation training class complete your installation" All warranties (old or new manual) will be honored as written above
  • You can be confident in choosing to install Rinnai tankless technology in your home; our commitment to quality has made us the #1 selling tankless water heating brand in North America; your family deserves nothing less
  • Professional installation recommended; please call 833-746-6210
  • Rinnai branded accessories will ensure optimal performance of your Rinnai Tankless Water Heater.
  • Click here for more information on Electronic Recycling Programs
  • Return Policy
  • California residents
     see Prop 65 WARNINGS

Product Information

Internet # 306655616

Model # RU180iN

Specifications

Dimensions: H 26.4 in, W 18.5 in, D 11.5 in

Dimensions

Product Depth (in.)11.5 inProduct Height (in.)26.4 in
Product Width (in.)18.5 inWater Connection Size (in.)3/4 in

Details

Efficiency LevelSuper HighFinish FamilySilver Metallic
Flow Rate @ 35°F Rise (gallons/min)9 gal (US)/minFlow Rate @ 45° Rise (gallons/min)7.6 gal (US)/min
Flow Rate @ 55° Rise (gallons/min)6.3 gal (US)/minFlow Rate @ 65° Rise (gallons/min)5.3 gal (US)/min
Fuel TypeGasHeat Exchanger Warranty15 Year
Indoor/OutdoorIndoorMaximum Temperature (F)185 F
Minimum Activation Rate (gpm)0.4Minimum Temperature (F)98 F
Number of Showers2-4Pack Size1
Product Weight (lb.)64 lbRequired Volt Connection120 volt
Returnable90-DayTotal BTU (Btu)180000 Btu
Uniform Energy Factor0.93Vent TypeSingle Wall

Warranty / Certifications

Certifications and ListingsAHRI Certified, CSA CertifiedLabor Warranty1 Year
Part Warranty5 Year

Questions & Answers

9Questions
caret
Q:What size gas line is required?
by|Feb 2, 2024
1 Answer
Answer This Question

A:  Hi Jay, we recommend you speak with a local installer. They will need to size the gas line for your home. There are many factors that come in to play and you want to make sure it is sized correctly so during winter months when you have additional heating options on like a furnace you don't run into issues with your tankless.

by|Feb 21, 2024
    caret
    Q:is the same model as RRU180IN? I have found it in other sites as that.
    by|Aug 15, 2023
    1 Answer
    Answer This Question

    A:  Hello, this is a Rinnai model RU180iN and we are unaware of a RRU180IN. If interested in purchasing from a e-tailer please see all authorized etailers listed here https://www.rinnai.us/authorized-e-tailers. - Thank you, Rinnai Customer Care

    by|Aug 19, 2023
      caret
      Q:Installation price?
      by|Oct 30, 2022
      1 Answer
      Answer This Question

      A:  Installation prices vary depending upon the application and if PVC is being used. They could range from a few hundred to a thousand dollars or so. --Tashay

      by|Nov 14, 2022
        caret
        Q:I?m waiting a full 90 seconds before the water turns warm then hot out of the tap. Wastes a lot of water and time. What can I do?
        by|Jul 15, 2022
        1 Answer
        Answer This Question

        A:  Greetings Kris, As this item was already installed, please contact Rinnai directly at 1-800-621-9419 as they will be able to troubleshoot and assist with a replacement since the item is still under warranty. Thank you!

        by|Jul 20, 2022
          Showing 1-4 of 9

          Customer Reviews

          4.7 out of 5
          • 4.7 out of 13 reviews
          • 100% recommend this product
          Filter by:
          Showing 1-10 of 13 reviews
          Installed the RU180iN myself. I’m not a plumber, but I’m fairly capable having performed many hom...
          Installed the RU180iN myself. I’m not a plumber, but I’m fairly capable having performed many home improvement projects over the years. Because I also replaced all the 70-year-old galvanized water pipes (with all new copper) and replaced all the old gas lines throughout my basement, this was a serious undertaking for me. I did it in stages, spread over four weekends. The installation manual is very well done...also a good amount of information online & YouTube. And I asked Bruce at HD a thousand questions. I love the tankless water heater. It’s been running about three weeks now...no complaints. 120 degrees is plenty hot and I find it to be pretty quite. Standing outside, it’s quieter than my next door neighbor’s power-vented tanked water heater.
          by
            • Recommended
            11 found this review helpful
            I installed the heater and it has been doing a...
            I installed the heater and it has been doing a very good job I am hoping that I will see a reduction in my gas bill.
            by
            • Verified Purchase
            Rinnai tankless water heater
            This unit works really well. I am very pleased with it this far. The water takes only minutes to heat up.
            by
            • Verified Purchase
            • Recommended
            by
            • Verified Purchase
            Installation was relatively simple - plumber was able to do...
            Installation was relatively simple - plumber was able to do this by themself. Uses pretty standard connections (3/4 inch for cold water input and hot water output). Exhaust has several options! Performance is pretty solid, though a bit on the noisier side.
            by
            • Verified Purchase
            Rinnai Super High Efficiency Plus 10 GPM Residential 180,000 BTU...
            Rinnai Super High Efficiency Plus 10 GPM Residential 180,000 BTU Natural Gas Interior Tankless Water Heater is a wonderful unit. It works slightly differently from my previous unit did but I enjoy the way it serves my whole house needs.
            by
            • Verified Purchase
            It works
            It works nicely, looking forward to this lasting a few years.
            by
            • Verified Purchase
            by
            • Verified Purchase
            Great product! I ended up having a plumber install it....
            Great product! I ended up having a plumber install it. And I’m glad I did. It looks great.
            by
              Have not run out of hot water! Easy to install....
              Have not run out of hot water! Easy to install.
              by
              • Verified Purchase
              Showing 1-10 of 13 reviews

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