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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 - RE140iN - RE Model Series High Efficiency Non Condensing

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

    Spec Sheet  Install Manual Learn More RE140iN is the perfect combination of high efficiency, comfort and value in a natural gas non- condensing tan...

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    $ 884.10 - $ 884.10
    $ 884.10
    $ 884.10 - $ 884.10
    $ 884.10
  • Sold out

    Rinnai Control-R Wi-Fi Push Button RWMPB01

    Rinnai
    $ 60.23 - $ 60.23
    $ 60.23
    $ 60.23 - $ 60.23
    $ 60.23

    Precisely engineered accessories can add even more reliability, convenience and flexibility to Rinnai Tankless Water Heaters.   For Use with the RW...

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    $ 60.23 - $ 60.23
    $ 60.23
    $ 60.23 - $ 60.23
    $ 60.23
    Sold out
  • Rinnai - Rinnai Universal Horizontal Termination Kit 11.5" 223181 - - Water Heater Venting - Big Frog Supply - 2
    Rinnai - Rinnai Universal Horizontal Termination Kit 11.5" 223181 - - Water Heater Venting - Big Frog Supply - 1
    Sold out

    SCRATCH AND DENT Rinnai Universal Horizontal Termination Kit 11.5" 223181

    Rinnai
    $ 110.00
    $ 110.00 - $ 110.00
    $ 110.00
    $ 85.00
    $ 85.00 - $ 85.00
    $ 85.00

    Item is fairly worn but still functional. Significant signs of cosmetic damage can include scratches, dents, and worn corners. Item may arrive wit...

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    $ 110.00
    $ 110.00 - $ 110.00
    $ 110.00
    $ 85.00
    $ 85.00 - $ 85.00
    $ 85.00
    Sold out
  • Rinnai EX38CP Propane Direct Vent Wall Furnace

    Rinnai - EX38DTWP - Propane Direct Vent Wall Furnace (White)

    Rinnai
    $ 2,769.20 - $ 2,769.20
    $ 2,769.20
    $ 2,769.20 - $ 2,769.20
    $ 2,769.20

    Rinnai EX38DTWP Direct Vent Wall Furnace – Propane (LP) The Rinnai EX38DTWP delivers strong, reliable heat with a compact wall-mounted design idea...

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    $ 2,769.20 - $ 2,769.20
    $ 2,769.20
    $ 2,769.20 - $ 2,769.20
    $ 2,769.20
  • Rinnai EX38CP Propane Direct Vent Wall Furnace

    Rinnai EX38DTP - Propane Direct Vent Wall Furnace

    Rinnai
    $ 2,769.20 - $ 2,769.20
    $ 2,769.20
    $ 2,769.20 - $ 2,769.20
    $ 2,769.20

    Rinnai EX38DTP Direct Vent Wall Furnace – Propane (LP), Beige The Rinnai EX38DTP delivers powerful, efficient propane heat in a quiet, compact wal...

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    $ 2,769.20 - $ 2,769.20
    $ 2,769.20
    $ 2,769.20 - $ 2,769.20
    $ 2,769.20

  • Rinnai - EX38DTWN - Natural Gas Direct Vent Wall Furnace (White)

    Rinnai
    $ 2,769.20 - $ 2,769.20
    $ 2,769.20
    $ 2,769.20 - $ 2,769.20
    $ 2,769.20

    Rinnai EX38DTWN Direct Vent Wall Furnace – Natural Gas (NG) The Rinnai EX38DTWN delivers powerful, efficient NG heating in a compact, quiet, wall-...

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    $ 2,769.20 - $ 2,769.20
    $ 2,769.20
    $ 2,769.20 - $ 2,769.20
    $ 2,769.20
  • Rinnai EX38CN Natural Gas Direct Vent Wall Furnace

    Rinnai EX38DTN Natural Gas Direct Vent Wall Furnace

    Rinnai
    $ 2,769.20 - $ 2,769.20
    $ 2,769.20
    $ 2,769.20 - $ 2,769.20
    $ 2,769.20

    Rinnai EX38DTN Direct Vent Wall Furnace – Natural Gas (NG), Beige The Rinnai EX38DTN provides powerful, efficient Natural Gas heating in a quiet, ...

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    $ 2,769.20 - $ 2,769.20
    $ 2,769.20
    $ 2,769.20 - $ 2,769.20
    $ 2,769.20

  • Rinnai EX22DTP Propane Direct Vent Wall Furnace

    Rinnai
    $ 2,325.40 - $ 2,325.40
    $ 2,325.40
    $ 2,325.40 - $ 2,325.40
    $ 2,325.40

    Rinnai EX22DTP Direct Vent Wall Furnace – Propane (LP), Beige The Rinnai EX22DTP brings efficient propane heating to mid-size rooms with a clean, ...

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    $ 2,325.40 - $ 2,325.40
    $ 2,325.40
    $ 2,325.40 - $ 2,325.40
    $ 2,325.40

  • Rinnai EX22DTWN Natural Gas Direct Vent Wall Furnace (White)

    Rinnai
    $ 2,325.40 - $ 2,325.40
    $ 2,325.40
    $ 2,325.40 - $ 2,325.40
    $ 2,325.40

    Rinnai EX22DTWN Direct Vent Wall Furnace – Natural Gas (NG), White The Rinnai EX22DTWN provides efficient, quiet Natural Gas heating in a compact ...

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    $ 2,325.40 - $ 2,325.40
    $ 2,325.40
    $ 2,325.40 - $ 2,325.40
    $ 2,325.40
  • Rinnai EX22CN Natural Gas Direct Vent Wall Furnace

    Rinnai EX22DTWP Propane Gas Direct Vent Wall Furnace (White)

    Rinnai
    $ 2,325.40 - $ 2,325.40
    $ 2,325.40
    $ 2,325.40 - $ 2,325.40
    $ 2,325.40

    Rinnai EX22DTWP Direct Vent Wall Furnace – Propane (LP) The Rinnai EX22DTWP delivers efficient, quiet, and comfortable propane heat in a compact w...

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    $ 2,325.40 - $ 2,325.40
    $ 2,325.40
    $ 2,325.40 - $ 2,325.40
    $ 2,325.40
  • Rinnai EX11CN Natural Gas Direct Vent Wall Furnace
    Rinnai EX11CN Natural Gas Direct Vent Wall Furnace

    Rinnai EX11DTP Propane Gas Direct Vent Wall Furnace

    Rinnai
    $ 1,757.70 - $ 1,757.70
    $ 1,757.70
    $ 1,757.70 - $ 1,757.70
    $ 1,757.70

    Rinnai EX11DTP Direct Vent Wall Furnace – Propane (LP), Beige The Rinnai EX11DTP provides efficient propane heating in a compact, ultra-quiet pack...

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    $ 1,757.70 - $ 1,757.70
    $ 1,757.70
    $ 1,757.70 - $ 1,757.70
    $ 1,757.70

  • Rinnai REP199iP High Efficiency Non Condensing 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 REP199iP Non Condensing Tankless Water Heater The Rinnai REP199iP Non Condensing Tankless Water Heater delivers the perfect blend of high ef...

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

  • Rinnai - RE199iP - RE Model Series High Efficiency Non Condensing (Replaces model V94 and RL94)

    Rinnai
    $ 1,423.10 - $ 1,423.10
    $ 1,423.10
    $ 1,423.10 - $ 1,423.10
    $ 1,423.10

    Spec Sheet Install Manual Learn More RE199iP is the perfect combination of high efficiency, comfort and value in a Propane gas non- condensing ta...

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    $ 1,423.10 - $ 1,423.10
    $ 1,423.10
    $ 1,423.10 - $ 1,423.10
    $ 1,423.10

  • Rinnai REP199iN High Efficiency Non Condensing Indoor 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 REP199iN High Efficiency Tankless Water Heater With Recirculation Pump The Rinnai REP199iN High-Efficiency Tankless Water Heater delivers ma...

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

  • Rinnai RE199iN Natural Gas High Efficiency Non Condensing Tankless Water Heater

    Rinnai
    $ 1,423.10 - $ 1,423.10
    $ 1,423.10
    $ 1,423.10 - $ 1,423.10
    $ 1,423.10

    Rinnai RE199iN Natural Gas Tankless Water Heater Never run out of hot water again with the Rinnai RE199iN natural gas non-condensing tankless water...

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    $ 1,423.10 - $ 1,423.10
    $ 1,423.10
    $ 1,423.10 - $ 1,423.10
    $ 1,423.10

  • Rinnai RE180iP High Efficiency Non Condensing Indoor Propane Tankless Water Heater

    Rinnai
    $ 1,212.40 - $ 1,212.40
    $ 1,212.40
    $ 1,212.40 - $ 1,212.40
    $ 1,212.40

    Rinnai RE180iP Indoor Propane Tankless Water Heater The Rinnai RE180iP Tankless Water Heater is your high-efficiency, space-saving solution for end...

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    $ 1,212.40 - $ 1,212.40
    $ 1,212.40
    $ 1,212.40 - $ 1,212.40
    $ 1,212.40

  • Rinnai RE180iN Natural Gas High Efficiency Non Condensing Tankless Water Heater

    Rinnai
    $ 1,212.40 - $ 1,212.40
    $ 1,212.40
    $ 1,212.40 - $ 1,212.40
    $ 1,212.40

    Rinnai RE180iN Indoor Non Condensing Tankless Water Heater Enjoy endless hot water and exceptional efficiency with the Rinnai RE180iN natural gas t...

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    $ 1,212.40 - $ 1,212.40
    $ 1,212.40
    $ 1,212.40 - $ 1,212.40
    $ 1,212.40

  • Rinnai - RE160iP - RE Model Series High Efficiency Non Condensing (Replaces model V65)

    Rinnai
    $ 992.60 - $ 992.60
    $ 992.60
    $ 992.60 - $ 992.60
    $ 992.60

    Spec Sheet Install Manual Learn More RE160iP is the perfect combination of high efficiency, comfort and value in a Propane gas non- condensing ta...

    View full details
    $ 992.60 - $ 992.60
    $ 992.60
    $ 992.60 - $ 992.60
    $ 992.60

  • Rinnai - RE160iN - RE Model Series High Efficiency Non Condensing (Replaces model V65)

    Rinnai
    $ 992.60 - $ 992.60
    $ 992.60
    $ 992.60 - $ 992.60
    $ 992.60

    Spec Sheet Install Manual Learn More RE160iN is the perfect combination of high efficiency, comfort and value in a natural gas non- condensing ta...

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    $ 992.60 - $ 992.60
    $ 992.60
    $ 992.60 - $ 992.60
    $ 992.60

  • Rinnai SENSEI RSC160iN RSC Series Super High Efficiency Plus - Natural Gas Water Heater

    Rinnai
    $ 1,369.62 - $ 1,369.62
    $ 1,369.62
    $ 1,369.62 - $ 1,369.62
    $ 1,369.62

    Rinnai SENSEI RSC160iN Super High Efficiency Natural Gas Water Heater Experience the ultimate in hot water performance with the Rinnai RSC160iN Sup...

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    $ 1,369.62 - $ 1,369.62
    $ 1,369.62
    $ 1,369.62 - $ 1,369.62
    $ 1,369.62

  • Rinnai - RWMTS01 - Control-R Wi-Fi Temperature Sensor

    Rinnai
    $ 159.95 - $ 159.95
    $ 159.95
    $ 159.95 - $ 159.95
    $ 159.95

    Wireless Temperature Sensor The sensor turns off the recirculation and is available for purchase if required by local building codes.

    $ 159.95 - $ 159.95
    $ 159.95
    $ 159.95 - $ 159.95
    $ 159.95
  • Sold out

    Rinnai - PCD07-SM - Pipe Cover Enclosure Bottom Plate for Ultra Series

    Rinnai
    $ 58.00 - $ 58.00
    $ 58.00
    $ 58.00 - $ 58.00
    $ 58.00

    Rinnai bottom plate to be used with PCD07-SM to continue covering pipes.

    $ 58.00 - $ 58.00
    $ 58.00
    $ 58.00 - $ 58.00
    $ 58.00
    Sold out

  • Whitlam - FLOW AIDE System Descaler (1 Gallon)

    Whitlam
    $ 57.16 - $ 57.16
    $ 57.16
    $ 57.16 - $ 57.16
    $ 57.16

    Install Manual FLOW AIDE® System Descaler quickly dissolves water scale, lime, rust, and other water formed deposits, restoring efficiency to most ...

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    $ 57.16 - $ 57.16
    $ 57.16
    $ 57.16 - $ 57.16
    $ 57.16

  • Rinnai - 107000284 - Isolation Valve Kit Next Gen Replacement for Sensei Models

    Rinnai
    $ 99.99 - $ 99.99
    $ 99.99
    $ 99.99 - $ 99.99
    $ 99.99

    Rinnai Isolation Valve Kit Next Gen Replacement for Sensei Models 107000284

    $ 99.99 - $ 99.99
    $ 99.99
    $ 99.99 - $ 99.99
    $ 99.99

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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