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Tankless Water Heaters

Tankless water heaters deliver endless hot water with compact, energy-smart designs. Shop gas (natural gas or LP) and electric models from Rinnai, Rheem, Stiebel Eltron, Eemax, and Chronomite—plus venting, recirculation, controls, and repair parts to finish the job.

Shop by need

  • Fuel & power: Natural Gas and Propane; Electric 120V or 240V point-of-use and whole-home
  • Model type: Condensing and Non-condensing; Indoor or Outdoor; Combination units
  • Recirculation: built-in recirc pump models, add-on pumps, pump hardware, controllers, and WiFi control accessories
  • Venting: concentric and twin-pipe kits, terminations, pipe covers, and heater guards
  • Kits & parts: NG/LP conversion kits, descaler/flush kits, repair parts, cables, and accessories
  • Series callouts: Rinnai Sensei CX and Sensei RX series options
  •

    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 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 RX180iN – Sensei RX Series Indoor Tankless Water Heater The Rinnai RX180iN delivers powerful, efficient hot water performance for medium-to...

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

  • Rinnai -RX130iN- Sensei RX Condensing Series Pro Build Indoor without Pump Natural Gas/Propane

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 1,137.78
    $ 1,137.78 - $ 1,137.78
    $ 1,137.78

    Rinnai introduces its Adaptive Gas Valve Technology in the Sensei RX Pro Built Series  Rinnai introduces their Pro Build RX Series Tankless Water H...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 1,137.78
    $ 1,137.78 - $ 1,137.78
    $ 1,137.78

  • 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 RXP160iN – Sensei RX Series Indoor Tankless Water Heater The Rinnai RXP160iN is built for homeowners who want dependable performance, intell...

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

  • 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

  • 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 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 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 - 107000639 - Dedicated Return & Isolation Valve Kit

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 162.85
    $ 162.85 - $ 162.85
    $ 162.85

    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
    $ 162.85
    $ 162.85 - $ 162.85
    $ 162.85

  • Rinnai Outdoor Vent Cap RXOVC for Sensei RX series units

    Rinnai
    $ 0.00 - $ 0.00
    $ 0.00
    $ 46.90
    $ 46.90 - $ 46.90
    $ 46.90

    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
    $ 46.90
    $ 46.90 - $ 46.90
    $ 46.90

  • 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

Quick choosing guide

  1. Size by flow: estimate peak demand in GPM at your winter inlet temperature rise. Whole-home gas units often cover 5–11+ GPM; electric point-of-use fits sinks and small loads.
  2. Pick fuel & placement: Gas for highest flow; choose indoor with proper venting or outdoor where climate allows. Electric units need the correct amperage and breakers.
  3. Efficiency: select condensing for higher efficiency and cooler exhaust; plan condensate drain where required.
  4. Faster hot water: choose a model with a built-in recirc pump or add a recirc kit and controller.
  5. Complete the install: vent kit and terminations for gas models; isolation/service valves; pipe covers; WiFi or wall controllers. Use NG/LP conversion kits only as specified.
  6. Maintenance: add a descaler/flush kit and schedule periodic cleaning to protect the heat exchanger.

Pro tips: Size for the coldest inlet temperature, verify gas line BTU capacity and vent route for NG/LP models, or breaker/wire size for electric units. Install isolation valves for easy flushing, set recirc schedules to cut wait time, and winterize outdoor units where required.

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