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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 RE199eN — 9.8 GPM Non-Condensing Natural Gas Tankless Water Heater (199,000 BTU)

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 1,423.10
    $ 1,423.10 - $ 1,423.10
    $ 1,423.10

    Rinnai RE199eN — Natural Gas Non-Condensing Tankless Water Heater The Rinnai RE199eN brings high-capacity on-demand hot water using natural gas. En...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 1,423.10
    $ 1,423.10 - $ 1,423.10
    $ 1,423.10

  • Rinnai RE199eP — 9.8 GPM Propane Outdoor Tankless Water Heater (199,000 BTU)

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 1,423.10
    $ 1,423.10 - $ 1,423.10
    $ 1,423.10

    Rinnai RE199eP — 9.8 GPM Propane Outdoor Non-Condensing Tankless Heater The Rinnai RE199eP is a high-capacity, non-condensing propane tankless wate...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 1,423.10
    $ 1,423.10 - $ 1,423.10
    $ 1,423.10

  • 2lb Talon Drain Opener

    Whitlam
    $ 0.00 - $ 0.00
    $ 0.00
    $ 32.81
    $ 32.81 - $ 32.81
    $ 32.81

    TALON Drain Opener opens drains clogged by grease, hair and other organic matter, controls root growth, and opens grease traps fast without the dan...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 32.81
    $ 32.81 - $ 32.81
    $ 32.81

  • 1 LB TALON" DRAIN OPENER

    Whitlam
    $ 0.00 - $ 0.00
    $ 0.00
    $ 18.71
    $ 18.71 - $ 18.71
    $ 18.71

    TALON Drain Opener opens drains clogged by grease, hair and other organic matter, controls root growth, and opens grease traps fast without the dan...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 18.71
    $ 18.71 - $ 18.71
    $ 18.71
  • Sold out

    Rinnai 229252 - 2/4" Condensing Horizontal Starter Adapter (PPtl) fits SENSEI RX

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 27.76
    $ 27.76 - $ 27.76
    $ 27.76

    Ubbink Polypropylene concentric venting delivers a professional solution with improved safety and convenience. 2/4 in. (60/100) Ubbink Vent Compon...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 27.76
    $ 27.76 - $ 27.76
    $ 27.76
    Sold out
  • Sold out

    Rinnai 229233 - 2/4" Condensing 90-degree Elbow (PPtl) fits SENSEI RX

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 25.92
    $ 25.92 - $ 25.92
    $ 25.92

    Ubbink Polypropylene concentric venting delivers a professional solution with improved safety and convenience. 2/4 in. (60/100) Ubbink Vent Compon...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 25.92
    $ 25.92 - $ 25.92
    $ 25.92
    Sold out
  • Sold out

    Rinnai 2/4" Condensing 45-degree Elbow (2 Pack) (PPtl) fits SENSEI RX

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 37.06
    $ 37.06 - $ 37.06
    $ 37.06

    Ubbink Polypropylene concentric venting delivers a professional solution with improved safety and convenience. 2/4 in. (60/100) Ubbink Vent Compon...

    View full details
    $ 0.00 - $ 0.00
    $ 0.00
    $ 37.06
    $ 37.06 - $ 37.06
    $ 37.06
    Sold out
  • Sold out

    Rinnai 185348NPP - 2"/4" Condensing Roof Terminal Extension Kit

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 77.00
    $ 77.00 - $ 77.00
    $ 77.00

    Ubbink Polypropylene concentric venting delivers a professional solution with improved safety and convenience. FEATURES & BENEFITS Compa...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 77.00
    $ 77.00 - $ 77.00
    $ 77.00
    Sold out
  • Sold out

    Rinnai 229320- 39" 2/4 Condensing Vent Pipe Extension (PPtl) fits SENSEI RX

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 41.99
    $ 41.99 - $ 41.99
    $ 41.99

    Ubbink Polypropylene concentric venting delivers a professional solution with improved safety and convenience. 2/4 in. (60/100) Ubbink Vent Compone...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 41.99
    $ 41.99 - $ 41.99
    $ 41.99
    Sold out
  • Sold out

    Rinnai 229319- 2/4" x 19.5" Condensing Vent Pipe Extension (PPtl) fits SENSEI RX

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 30.99
    $ 30.99 - $ 30.99
    $ 30.99

    Ubbink Polypropylene concentric venting delivers a professional solution with improved safety and convenience. 2/4 in. (60/100) Ubbink Vent Compone...

    View full details
    $ 0.00 - $ 0.00
    $ 0.00
    $ 30.99
    $ 30.99 - $ 30.99
    $ 30.99
    Sold out
  • Sold out

    Rinnai 229318 - 2/4" x 10" Condensing Vent Pipe Extension (PPtl) fits SENSEI RX

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 24.39
    $ 24.39 - $ 24.39
    $ 24.39

    Ubbink Polypropylene concentric venting delivers a professional solution with improved safety and convenience. 2/4 in. (60/100) Ubbink Vent Compone...

    View full details
    $ 0.00 - $ 0.00
    $ 0.00
    $ 24.39
    $ 24.39 - $ 24.39
    $ 24.39
    Sold out
  • Sold out

    Rinnai 224359- 2/4" Condensing Roof Discharge Termination, 20" (Above Roof) (PPtl) fits SENSEI RX

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 64.98
    $ 64.98 - $ 64.98
    $ 64.98

    Ubbink Polypropylene concentric venting delivers a professional solution with improved safety and convenience. 2/4 in. (60/100) Ubbink Vent Compone...

    View full details
    $ 0.00 - $ 0.00
    $ 0.00
    $ 64.98
    $ 64.98 - $ 64.98
    $ 64.98
    Sold out
  • Sold out

    Rinnai 229033 - 2/4" Condensing Wall Termination, 21" w/ 2 Wall Plates (PPtl) fits SENSEI RX

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 32.99
    $ 32.99 - $ 32.99
    $ 32.99

    Ubbink Polypropylene concentric venting delivers a professional solution with improved safety and convenience.  For use with the following models: ...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 32.99
    $ 32.99 - $ 32.99
    $ 32.99
    Sold out

  • Rinnai 229032 - 2/4" Condensing Horizontal Termination Kit, 21" (PPtl) fits SENSEI RX

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 78.00
    $ 78.00 - $ 78.00
    $ 78.00

    Ubbink Polypropylene concentric venting delivers a professional solution with improved safety and convenience.  For use with the following models: ...

    View full details
    $ 0.00 - $ 0.00
    $ 0.00
    $ 78.00
    $ 78.00 - $ 78.00
    $ 78.00

  • Rinnai 229031 - 12", 2"/4" Condensing Horizontal Termination Kit (PPtl) fits SENSEI RX

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 62.17
    $ 62.17 - $ 62.17
    $ 62.17

    Ubbink Polypropylene concentric venting delivers a professional solution with improved safety and convenience.  For use with the following models...

    View full details
    $ 0.00 - $ 0.00
    $ 0.00
    $ 62.17
    $ 62.17 - $ 62.17
    $ 62.17

  • Rinnai EZ-connect Cable for RX Units

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 71.00
    $ 71.00 - $ 71.00
    $ 71.00

    Electronically connects two units so they function as one hot water source. Updated wire works with the RX group of water heaters. RX130 RX160 RX18...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 71.00
    $ 71.00 - $ 71.00
    $ 71.00

  • Scratch and Dent Rinnai Commercial Condensing 9.8 gpm Propane -SD1

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 1,580.79
    $ 1,580.79 - $ 1,580.79
    $ 1,580.79

    ITEM IS LIKE NEW. SIGNS OF COSMETIC DAMAGE CAN INCLUDE SCRATCHES, DENTS, AND WORN CORNERS. ITEM MAY ARRIVE WITH DAMAGED PACKAGING OR BE REPACKAGED....

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 1,580.79
    $ 1,580.79 - $ 1,580.79
    $ 1,580.79

  • Rinnai RXP160IN Sensei RX Condensing Recirculating Pro Series Indoor with Pump Natural Gas/Propane

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 1,517.04
    $ 1,517.04 - $ 1,517.04
    $ 1,517.04

    Rinnai Sensei RXP160IN Condensing Recirculating Indoor Tankless Water Heater Upgrade your home's comfort and efficiency with the Rinnai SENSEI RXP1...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 1,517.04
    $ 1,517.04 - $ 1,517.04
    $ 1,517.04

  • Rinnai RX180iN Sensei Indoor/Outdoor Tankless Water Heater Natural Gas/Propane

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 1,409.94
    $ 1,409.94 - $ 1,409.94
    $ 1,409.94

    Rinnai Sensei RX180iN Tankless Water Heater Say goodbye to cold showers forever with the Rinnai RX180iN Tankless Water Heater. This Energy Star cer...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 1,409.94
    $ 1,409.94 - $ 1,409.94
    $ 1,409.94
  • Sold out

    Rinnai - CXP199iN- SENSEI CX Series Built for the PRO Commercial INDOOR with Pump NATURAL GAS/PROPANE

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 2,005.29
    $ 2,005.29 - $ 2,005.29
    $ 2,005.29

    SUPER-HIGH-EFFICIENCY (CONDENSING) with Pump TANKLESS WATER HEATER SENSEI CX Series is the Built for the PRO, by the PRO with a new, more compact c...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 2,005.29
    $ 2,005.29 - $ 2,005.29
    $ 2,005.29
    Sold out
  • Sold out

    Rinnai - CXP160iN- SENSEI CX Series Built for the PRO Commercial INDOOR with Pump NATURAL GAS/PROPANE

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 1,608.39
    $ 1,608.39 - $ 1,608.39
    $ 1,608.39

    SUPER-HIGH-EFFICIENCY (CONDENSING) with Pump TANKLESS WATER HEATER SENSEI™ CX Series is the Built for the PRO, by the PRO with a new, more compact ...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 1,608.39
    $ 1,608.39 - $ 1,608.39
    $ 1,608.39
    Sold out
  • Sold out

    Rinnai - CX160iN - SENSEI CX Series Built for the PRO Commercial INDOOR without Pump NATURAL GAS/PROPANE

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 1,355.13
    $ 1,355.13 - $ 1,355.13
    $ 1,355.13

    SUPER-HIGH-EFFICIENCY (CONDENSING) without Pump TANKLESS WATER HEATER SENSEI™ CX Series is the Built for the PRO, by the PRO with a new, more compa...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 1,355.13
    $ 1,355.13 - $ 1,355.13
    $ 1,355.13
    Sold out

  • 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...

    View full details
    $ 0.00 - $ 0.00
    $ 0.00
    $ 1,532.79
    $ 1,532.79 - $ 1,532.79
    $ 1,532.79

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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