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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...

    View full details
    $ 1,254.51 - $ 1,254.51
    $ 1,254.51
    $ 1,254.51 - $ 1,254.51
    $ 1,254.51
    Sold out

  • Rheem - RTGH-84XLP-2 - 8.4 GPM Outdoor Condensing Propane Tankless Water Heater

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

    Spec Sheet Max GPM 8.4 Recirc Incl. No Warranty 12 Yrs Rheem Prestige® RTGH is a series of high efficiency condensing tankless gas wate...

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

    Rheem - RTG-84DVLP-3 - Mid Efficiency RTG-84DVLP-1 Direct Vent Indoor Propane Tankless Water Heater

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

    Spec Sheet Mid Efficiency 8.4 GPM Indoor Propane Gas EcoNet Included 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

  • 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-84DVLP-2 - High Efficiency 8.4 GPM Indoor Propane 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 Indoor Propane Gas EcoNet Enabled Tankless Water Heater with 12 Year Limited Warranty Rheem Prestige™ RTGH is a serie...

    View full details
    $ 1,188.00 - $ 1,188.00
    $ 1,188.00
    $ 1,188.00 - $ 1,188.00
    $ 1,188.00
    Sold out
  • Sold out

    Rheem® Professional Prestige Combination Boiler- Propane

    Rheem
    $ 2,282.00 - $ 2,282.00
    $ 2,282.00
    $ 2,282.00 - $ 2,282.00
    $ 2,282.00

    Energy Star Rated 95% AFUE Perfect for Replacing a Boiler Outdoor Reset Sensor Included Overview Space Heating and Hot Water - Efficient...

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    $ 2,282.00 - $ 2,282.00
    $ 2,282.00
    $ 2,282.00 - $ 2,282.00
    $ 2,282.00
    Sold out
  • Sold out

    Rheem® Professional Prestige Combination Boiler- Propane

    Rheem
    $ 2,443.00 - $ 2,443.00
    $ 2,443.00
    $ 2,443.00 - $ 2,443.00
    $ 2,443.00

    Energy Star Rated 95% AFUE Perfect for Replacing a Boiler Outdoor Reset Sensor Included Overview Space Heating and Hot Water - Efficient...

    View full details
    $ 2,443.00 - $ 2,443.00
    $ 2,443.00
    $ 2,443.00 - $ 2,443.00
    $ 2,443.00
    Sold out
  • Sold out

    Eccotemp - 6GB-ILP - Builder Series 6.0 GPM Indoor Liquid Propane Tankless Water Heater

    Eccotemp
    $ 782.00 - $ 782.00
    $ 782.00
    $ 782.00 - $ 782.00
    $ 782.00

    The Eccotemp Builder Series 6 GPM Indoor Liquid Propane Tankless Water Heater (6GB-ILP) is CSA approved and rated at an impressive 6 GPM with a tem...

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    $ 782.00 - $ 782.00
    $ 782.00
    $ 782.00 - $ 782.00
    $ 782.00
    Sold out
  • Sold out

    Eccotemp - 6.5GB-ILP - Builder Series 6.5 GPM Indoor Liquid Propane Tankless Water Heater

    Eccotemp
    $ 844.00 - $ 844.00
    $ 844.00
    $ 844.00 - $ 844.00
    $ 844.00

    The Eccotemp 6.5 GPM Indoor Liquid Propane Tankless Water Heater (6.5GB-ILP) is the second largest capacity model in the Builder Series. CSA approv...

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    $ 844.00 - $ 844.00
    $ 844.00
    $ 844.00 - $ 844.00
    $ 844.00
    Sold out
  • Sold out

    Eccotemp - 7GB-LP - Builder Series 7.0 GPM Outdoor Liquid Propane Tankless Water Heater

    Eccotemp
    $ 926.00 - $ 926.00
    $ 926.00
    $ 926.00 - $ 926.00
    $ 926.00

    The Eccotemp 7.0 GPM Outdoor Liquid Propane Tankless Water Heater (7GB-LP) is the largest capacity model in the Builder Series. ETL approved and ra...

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    $ 926.00 - $ 926.00
    $ 926.00
    $ 926.00 - $ 926.00
    $ 926.00
    Sold out

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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