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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
  • Sold out

    Rinnai - RL75eP - Propane Tankless Water Heater, 7.5 Gallons Per Minute

    Rinnai
    $ 1,254.51 - $ 1,254.51
    $ 1,254.51
    $ 1,254.51 - $ 1,254.51
    $ 1,254.51

    Spec Sheet   Install Manual High Efficiency Plus 7.5 GPM 180,000 BTU Natural Gas Exterior Tankless Water Heater Enjoy an endless supply of hot wa...

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    $ 1,254.51 - $ 1,254.51
    $ 1,254.51
    $ 1,254.51 - $ 1,254.51
    $ 1,254.51
    Sold out
  • Sold out

    Rheem - RTG-84XLN-3 - Mid Efficiency 8.4 GPM Outdoor Natural Gas EcoNet Enabled Tankless Water Heater

    Rheem
    $ 953.00 - $ 953.00
    $ 953.00
    $ 953.00 - $ 953.00
    $ 953.00

    Spec Sheet Mid Efficiency 8.4 GPM Outdoor Natural Gas EcoNet Enabled Tankless Water Heater with 12 Year Limited Warranty   Rheem RTG is a series ...

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    $ 953.00 - $ 953.00
    $ 953.00
    $ 953.00 - $ 953.00
    $ 953.00
    Sold out
  • Sold out

    Rheem - RTG-84XLP-3 - Tankless Water Heater

    Rheem
    $ 953.00 - $ 953.00
    $ 953.00
    $ 953.00 - $ 953.00
    $ 953.00

    Spec Sheet Rheem RTG is a series of mid-efficiency condensing tank less gas water heaters designed for continuous hot water. Industry leading low ...

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    $ 953.00 - $ 953.00
    $ 953.00
    $ 953.00 - $ 953.00
    $ 953.00
    Sold out

  • Rheem - RTG-70XLP-3 - Tankless Water Heater, Grey

    Rheem
    $ 999.00 - $ 999.00
    $ 999.00
    $ 999.00 - $ 999.00
    $ 999.00

    Spec Sheet Rheem RTG is a series of mid-efficiency condensing tank less gas water heaters designed for continuous hot water. Industry leading low ...

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    $ 999.00 - $ 999.00
    $ 999.00
    $ 999.00 - $ 999.00
    $ 999.00

  • Rinnai V53DeN V Series High Efficiency Tankless Water Heater

    Rinnai
    $ 741.65 - $ 741.65
    $ 741.65
    $ 741.65 - $ 741.65
    $ 741.65

    Rinnai V53DeN High Efficiency Water Heater Experience the perfect combination of efficiency and value with the Rinnai V53DeN Non-Condensing Tankles...

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    $ 741.65 - $ 741.65
    $ 741.65
    $ 741.65 - $ 741.65
    $ 741.65

  • Rinnai - V53DeP - V Model Series High Efficiency Tankless Water Heater by Rinnai

    Rinnai
    $ 741.65 - $ 741.65
    $ 741.65
    $ 741.65 - $ 741.65
    $ 741.65

    Rinnai V53DeP Propane Tankless Water Heater The Rinnai V53DEP High Efficiency Outdoor Tankless Heater delivers the perfect blend of continuous hot ...

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    $ 741.65 - $ 741.65
    $ 741.65
    $ 741.65 - $ 741.65
    $ 741.65
  • Sold out

    Rheem - RTGH-84XLN-2 - High Efficiency 8.4 GPM Outdoor Natural Gas EcoNet Enabled Tankless Water Heater

    Rheem
    $ 1,188.00 - $ 1,188.00
    $ 1,188.00
    $ 1,188.00 - $ 1,188.00
    $ 1,188.00

    High Efficiency 8.4 GPM Outdoor Natural Gas EcoNet Enabled Tankless Water Heater with 12 Year Limited Warranty Rheem Prestige™ RTGH is a seri...

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    $ 1,188.00 - $ 1,188.00
    $ 1,188.00
    $ 1,188.00 - $ 1,188.00
    $ 1,188.00
    Sold out
  • Sold out

    Rheem - RTGH-95XLN-2 - High Efficiency 9.5 GPM Outdoor Natural Gas EcoNet Enabled Tankless Water Heater

    Rheem
    $ 1,499.00 - $ 1,499.00
    $ 1,499.00
    $ 1,499.00 - $ 1,499.00
    $ 1,499.00

    High Efficiency 9.5 GPM Outdoor Natural Gas EcoNet Enabled Tankless Water Heater with 12 Year Limited Warranty Rheem Prestige® RTGH is a series ...

    View full details
    $ 1,499.00 - $ 1,499.00
    $ 1,499.00
    $ 1,499.00 - $ 1,499.00
    $ 1,499.00
    Sold out
  • Sold out

    Rheem - RTG-70XLN-3 - Mid Efficiency 70 Direct Vent Outdoor Natural Gas EcoNet Enabled Tankless Water Heater

    Rheem
    $ 819.75 - $ 819.75
    $ 819.75
    $ 819.75 - $ 819.75
    $ 819.75

    Spec Sheet Mid Efficiency 70 Direct Vent Outdoor Natural Gas EcoNet Enabled Tankless Water Heater with 12 Year Limited Warranty   Rheem RTG is a ...

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    $ 819.75 - $ 819.75
    $ 819.75
    $ 819.75 - $ 819.75
    $ 819.75
    Sold out

  • Rheem - RTG-95XLN-3 - Mid Efficiency 9.5 GPM Outdoor Natural Gas EcoNet Enabled Tankless Water Heater

    Rheem
    $ 1,243.00 - $ 1,243.00
    $ 1,243.00
    $ 1,243.00 - $ 1,243.00
    $ 1,243.00

    Spec Sheet Mid Efficiency 9.5 GPM Outdoor Natural Gas EcoNet Enabled Tankless Water Heater with 12 Year Limited Warranty   Rheem RTG is a series ...

    View full details
    $ 1,243.00 - $ 1,243.00
    $ 1,243.00
    $ 1,243.00 - $ 1,243.00
    $ 1,243.00
  • Sold out

    Rheem - RTG-95XLP-3 - Mid Efficiency 9.5 GPM Outdoor Propane EcoNet Enabled Tankless Water Heater

    Rheem
    $ 1,243.00 - $ 1,243.00
    $ 1,243.00
    $ 1,243.00 - $ 1,243.00
    $ 1,243.00

    Spec Sheet Mid Efficiency 9.5 GPM Outdoor Propane EcoNet Enabled Tankless Water Heater with 12 Year Limited Warranty   Rheem RTG is a series of u...

    View full details
    $ 1,243.00 - $ 1,243.00
    $ 1,243.00
    $ 1,243.00 - $ 1,243.00
    $ 1,243.00
    Sold out

  • 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

  • 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 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...

    View full details
    $ 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 ...

    View full details
    $ 1,129.10 - $ 1,129.10
    $ 1,129.10
    $ 1,129.10 - $ 1,129.10
    $ 1,129.10

  • 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 ...

    View full details
    $ 1,535.10 - $ 1,535.10
    $ 1,535.10
    $ 1,535.10 - $ 1,535.10
    $ 1,535.10

  • 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...

    View full details
    $ 1,535.10 - $ 1,535.10
    $ 1,535.10
    $ 1,535.10 - $ 1,535.10
    $ 1,535.10

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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