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Rinnai

Rinnai tankless water heaters deliver endless hot water with compact, efficient designs. Build the right system with indoor or outdoor models in natural gas or propane, condensing or non-condensing, recirculation options, clean venting, and the install parts to finish the job.

Shop by category

  • Condensing (SENSEI series): high-efficiency indoor/outdoor units; concentric or 2-pipe venting
  • Non-condensing: value models for simple replacements and mild climates
  • Recirculation: built-in pump models, recirc-ready units, crossover/bypass kits, timers and controls
  • Venting & covers: concentric and twin-pipe kits, terminations, pipe covers, wall thimbles
  • Controls: wall remotes and optional Wi-Fi/app modules
  • Install & service parts: isolation/flush valve kits, filters, condensate neutralizers, NG/LP conversion kits, repair parts

Quick choosing guide

  1. Size by demand: total peak fixtures and calculate GPM at your winter temperature rise; select a unit that meets that flow on the spec curve.
  2. Pick location & fuel: indoor with a vent route or outdoor where climate allows; choose natural gas or propane and confirm gas line capacity.
  3. Efficiency: choose condensing for higher efficiency (plan a condensate drain/neutralizer) or non-condensing for straightforward replacements.
  4. Faster hot water: pick a built-in recirc model or add a recirc kit to a recirc-ready unit; set schedules to reduce wait time.
  5. Venting: select concentric or 2-pipe per the manual; follow clearances and use approved materials and terminations.
  6. Complete the kit: install isolation/flush valves, pipe cover if desired, controller/Wi-Fi, sediment filter, and proper electrical/gas shutoff.


  •

    Rinnai CX199iN SENSEI Commercial Condensing Indoor/Outdoor Tankless Water Heater 199000 BTU

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 1,577.52
    $ 1,577.52 - $ 1,577.52
    $ 1,577.52

    Rinnai CX199iN SENSEI Commercial Indoor/Outdoor Tankless Water Heater For commercial spaces demanding peak performance and efficiency, the Rinnai C...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 1,577.52
    $ 1,577.52 - $ 1,577.52
    $ 1,577.52

  • Rinnai RX199iN Sensei Condensing Indoor/Outdoor Natural Gas/Propane Tankless Water Heater

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 1,532.79
    $ 1,532.79 - $ 1,532.79
    $ 1,532.79

    Rinnai Sensei RX199iN Indoor/Outdoor Tankless Water Heater Rinnai introduces their Pro Build RX Series Tankless Water Heaters, featuring Adaptive G...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 1,532.79
    $ 1,532.79 - $ 1,532.79
    $ 1,532.79

  • Rinnai RX160iN Sensei RX Series Indoor/Outdoor Natural Gas/Propane Tankless Water Heater

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 1,298.43
    $ 1,298.43 - $ 1,298.43
    $ 1,298.43

    Rinnai Sensei RX160iN Natural Gas/Propane Tankless Water Heater Rinnai RX160iN Tankless Water Heater features Adaptive Gas Valve Technology that al...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 1,298.43
    $ 1,298.43 - $ 1,298.43
    $ 1,298.43

  • Rinnai Outdoor Vent Cap RXOVC for Sensei RX series units

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 49.70
    $ 49.70 - $ 49.70
    $ 49.70

    Rinnai Outdoor Vent Cap The Rinnai Sensei Outdoor Versa-Vent Cap RXOVC is the essential accessory that instantly converts any Rinnai Sensei RX Seri...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 49.70
    $ 49.70 - $ 49.70
    $ 49.70

  • Rinnai - RX2RXPCK - Internal Add-On Recirculation Conversion KIT

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 509.90
    $ 509.90 - $ 509.90
    $ 509.90

    Rinnai Internal Add-On Recirculation Conversion Kit designed for their Sensei RX Series tankless water heaters, allowing models without a built-in ...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 509.90
    $ 509.90 - $ 509.90
    $ 509.90

  • Rinnai - 107000639 - Dedicated Return & Isolation Valve Kit

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 165.53
    $ 165.53 - $ 165.53
    $ 165.53

    Valve kit including tee, drain valve, pressure relief valve, check valve & isolation valves (cold & hot) to simplify set-up of a dedicated ...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 165.53
    $ 165.53 - $ 165.53
    $ 165.53

  • Rinnai RWM200 Wireless Wifi Module

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 150.00
    $ 150.00 - $ 150.00
    $ 150.00

    Rinnai RWM200 WiFi Module The Rinnai RWM200 Wireless Module connects you to your Rinnai tankless water heater from virtually anywhere, giving you c...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 150.00
    $ 150.00 - $ 150.00
    $ 150.00

  • Rinnai RPB200 On-Demand Recirculation via Push Button

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 45.00
    $ 45.00 - $ 45.00
    $ 45.00

    The Rinnai RWM200 Wireless Module lets homeowners experience the ultimate in accessibility, convenience, and control. Using the Rinnai Central app ...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 45.00
    $ 45.00 - $ 45.00
    $ 45.00

  • Rinnai Bottom plate for Pipe Cover 109001364 Fits Sensei RX

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 67.00
    $ 67.00 - $ 67.00
    $ 67.00

    Rinnai Bottom plate for Pipe Cover  109001364 Fits Sensei RX

    $ 0.00 - $ 0.00
    $ 0.00
    $ 67.00
    $ 67.00 - $ 67.00
    $ 67.00

  • Rinnai Pipe Cover PCD11-SHS fits Sensei RX

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 231.00
    $ 231.00 - $ 231.00
    $ 231.00

    Rinnai Sensei RX Pipe Cover Give your tankless water heater installation a clean, finished look with the Rinnai PCD11-SHS Pipe Cover Enclosure. Thi...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 231.00
    $ 231.00 - $ 231.00
    $ 231.00
  • Sold out

    Rinnai - 790146 - Check Valve PPTL to PVC Direct Vent

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 212.19
    $ 212.19 - $ 212.19
    $ 212.19

    PVC AND CPVC COMMON VENTING IN 3" AND 4" SIZING INCREASES SAVINGS AND FLEXIBILITY AVAILABLE WITH RINNAI INLINE TANKLESS RACK SYSTEMS (TRS) AND CORN...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 212.19
    $ 212.19 - $ 212.19
    $ 212.19
    Sold out

  • Rinnai 189958 Universal Shingle and Slate Roof Flashing 1/12 to 16/12 pitch

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 58.28
    $ 58.28 - $ 58.28
    $ 58.28

    Rinnai Universal Shingle and Slate Roof Flashing The 189958 Universal Shingle and Slate Roof Flashing assembly can be used with Rinnai LSi series t...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 58.28
    $ 58.28 - $ 58.28
    $ 58.28
  • Sold out

    Rinnai - RWMPB02 - Control-R Wi-Fi Push Button

    Rinnai
    $ 25.97 - $ 25.97
    $ 25.97
    $ 25.97 - $ 25.97
    $ 25.97

    Install Manual   Precisely engineered accessories can add even more reliability, convenience and flexibility to Rinnai Tankless Water Heaters.   Fo...

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    $ 25.97 - $ 25.97
    $ 25.97
    $ 25.97 - $ 25.97
    $ 25.97
    Sold out

  • Rinnai 804000074 Condensate Neutralizer Kit

    Rinnai
    $ 151.05 - $ 151.05
    $ 151.05
    $ 151.05 - $ 151.05
    $ 151.05

    Rinnai Condensate Neutralizer Kit The Rinnai 804000074 Condensate Neutralizer Kit is designed to provide reliable and efficient performance, design...

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    $ 151.05 - $ 151.05
    $ 151.05
    $ 151.05 - $ 151.05
    $ 151.05
  • Two white metal covers on a white background
    Metallic rectangular object on a white background

    Rinnai PCD09-SHS Pipe Cover Enclosure

    Rinnai
    $ 153.79 - $ 153.79
    $ 153.79
    $ 153.79 - $ 153.79
    $ 153.79

    Rinnai Pipe Cover Tidy up the look of your Rinnai tankless water heater installation with the PCD09-SHS water heater pipe cover. This sleek, silver...

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    $ 153.79 - $ 153.79
    $ 153.79
    $ 153.79 - $ 153.79
    $ 153.79

  • Rinnai REP199eP High Efficiency Non Condensing Propane Tankless Water Heater With Built-in Recirculation Pump

    Rinnai
    $ 1,535.10 - $ 1,535.10
    $ 1,535.10
    $ 1,535.10 - $ 1,535.10
    $ 1,535.10

    Rinnai REP199eP Outdoor Tankless Water Heater With Recirculation Pump For professional installers and homeowners seeking the perfect mix of value a...

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    $ 1,535.10 - $ 1,535.10
    $ 1,535.10
    $ 1,535.10 - $ 1,535.10
    $ 1,535.10

  • Rinnai REP199eN High Efficiency Outdoor Non Condensing Tankless Water Heater With Recirculation Pump

    Rinnai
    $ 1,535.10 - $ 1,535.10
    $ 1,535.10
    $ 1,535.10 - $ 1,535.10
    $ 1,535.10

    Rinnai REP199eN Outdoor Tankless Water Heater With Recirculation Pump Enjoy an endless supply of hot water with the Rinnai REP199eN tankless water ...

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    $ 1,535.10 - $ 1,535.10
    $ 1,535.10
    $ 1,535.10 - $ 1,535.10
    $ 1,535.10

  • Rinnai - REP160iP - REP Model Series High Efficiency Non Condensing includes a built-in recirculation pump.

    Rinnai
    $ 1,129.10 - $ 1,129.10
    $ 1,129.10
    $ 1,129.10 - $ 1,129.10
    $ 1,129.10

    Spec Sheet Install Manual Learn More REP160iP is the perfect combination of high efficiency, comfort and value in a propane gas tankless water heat...

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    $ 1,129.10 - $ 1,129.10
    $ 1,129.10
    $ 1,129.10 - $ 1,129.10
    $ 1,129.10

  • Rinnai - REP160iN - REP Model Series High Efficiency Non Condensing includes a built-in recirculation pump.

    Rinnai
    $ 1,129.10 - $ 1,129.10
    $ 1,129.10
    $ 1,129.10 - $ 1,129.10
    $ 1,129.10

    Spec Sheet Install Manual Learn More REP160iN is the perfect combination of high efficiency, comfort and value in a natural gas non- condensing tan...

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    $ 1,129.10 - $ 1,129.10
    $ 1,129.10
    $ 1,129.10 - $ 1,129.10
    $ 1,129.10

  • Rinnai REP160eP High Efficiency Non Condensing Tankless Water Heater With Built-in Recirculation Pump.

    Rinnai
    $ 1,129.10 - $ 1,129.10
    $ 1,129.10
    $ 1,129.10 - $ 1,129.10
    $ 1,129.10

    Rinnai REP160eP High Efficiency Water Heater With Recirculation Pump Get reliable, continuous hot water for your home right where you need it with ...

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    $ 1,129.10 - $ 1,129.10
    $ 1,129.10
    $ 1,129.10 - $ 1,129.10
    $ 1,129.10

  • Rinnai REP160eN High Efficiency Non Condensing Natural Gas Tankless Water Heater With Built-in Recirculation Pump.

    Rinnai
    $ 1,129.10 - $ 1,129.10
    $ 1,129.10
    $ 1,129.10 - $ 1,129.10
    $ 1,129.10

    Rinnai REP160eN High Efficiency Tankless Water Heater With Recirculation Pump Enjoy the freedom of endless hot water installed right outside your h...

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    $ 1,129.10 - $ 1,129.10
    $ 1,129.10
    $ 1,129.10 - $ 1,129.10
    $ 1,129.10

  • Rinnai RE140iP Propane Indoor High Efficiency Non Condensing Tankless Water Heater

    Rinnai
    $ 884.10 - $ 884.10
    $ 884.10
    $ 884.10 - $ 884.10
    $ 884.10

    Rinnai RE140iP Indoor Tankless Water Heater The Rinnai RE140iP  High Efficiency Tankless Water Heater is the ideal indoor solution for homeowners s...

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    $ 884.10 - $ 884.10
    $ 884.10
    $ 884.10 - $ 884.10
    $ 884.10

  • Rinnai RE140eP High Efficiency Non Condensing Outdoor Propane Tankless Water Heater

    Rinnai
    $ 884.10 - $ 884.10
    $ 884.10
    $ 884.10 - $ 884.10
    $ 884.10

    Rinnai RE140eP Outdoor Propane Tankless Water Heater The Rinnai RE140eP Tankless Water Heater offers a compact, high-efficiency (0.81 UEF) solution...

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    $ 884.10 - $ 884.10
    $ 884.10
    $ 884.10 - $ 884.10
    $ 884.10

  • Rinnai RE140eN High Efficiency Non Condensing Outdoor Natural Gass Tankless Water Heater

    Rinnai
    $ 884.10 - $ 884.10
    $ 884.10
    $ 884.10 - $ 884.10
    $ 884.10

    Rinnai RE140eN High Efficiency Outdoor Tankless Water Heater The Rinnai RE140eN Natural Gas Tankless Water Heater  is the perfect combination of hi...

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    $ 884.10 - $ 884.10
    $ 884.10
    $ 884.10 - $ 884.10
    $ 884.10

Pro tips: Size from the coldest inlet temperature, verify gas line capacity and vent route before mounting, and neutralize condensate on condensing models. Add isolation valves for easy descaling, set recirc schedules, and register your unit for warranty. Not sure which Rinnai and kit you need? Tell us fuel type, location, and demand—we will build a dialed-in list.

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