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Tankless Water Heaters

Shop the top tankless hot water heaters online and enjoy endless hot water on demand. Browse our selection of high-quality tankless water heaters from the top brands, including Rinnai, Eccotemp, and PrecisionTemp. Find the perfect model for your home or business, and enjoy an energy-efficient performance.

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Shop Top-Selling Tankless Hot Water Heater Brands

Our collection includes EccotempPrecisionTemp, and the #1 selling tankless water heater manufacturer in North America - Rinnai. Our top-selling tankless water heater is the Rinnai SE+ Series 11 GPM Indoor Condensing Tankless Water Heater, NG - If you want an energy-efficient, high-performance tankless water heater for your home or business, we highly recommend the SE+ Series 11 GPM Indoor. 

Find Your Perfect Tankless Water Hot Heater in Our Collection

Our collection includes a range of sizes and styles to find the perfect tankless water heater for your home. Whether you're looking for a compact unit for a small space or a powerful one to handle the hot water needs of a large family, you'll find it in this collection. Plus, with our selection of energy-efficient models, you can save on your monthly energy bills and do your part for the environment. 

Stay Comfortable on the Go with Our Tankless Water Heaters for RVs and Off-Grid Living

If you're a traveler with an RV looking to have warm showers on the go, we recommend the RV-550 EC with Black Door Natural Gas Tankless Water Heater. It is lightweight and sleek, allowing you to install it perfectly in your RV. You'll enjoy warm showers on the go whenever you want using natural gas, a digital display, and several safety protections. Check out this list if you want more options for tankless water heaters for off-grid living

Discover the Benefits of Tankless Hot Water Heaters for Your Home:

Curious about the benefits of tankless hot water heaters? Discover how tankless water heaters can improve your home's energy efficiency, save you money on energy bills, provide endless hot water on demand, and more. Read our tankless water heater blogs to make an informed buying decision, or just learn more about water heaters!


  • Original price $6,330.00 - Original price $6,330.00
    Original price
    $6,330.00
    $6,330.00 - $6,330.00
    Current price $6,330.00

    TwinTemp Junior Natural Gas Tankless Water Heater

    PrecisionTemp

    TwinTemp Junior Natural Gas Tankless Water Heater One heating zone with up to six blowers. Whisper quiet operation and no diesel smell. On-...

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    Original price $6,330.00 - Original price $6,330.00
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    $6,330.00
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    Current price $6,330.00
  • Original price $6,200.00 - Original price $6,200.00
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    $6,200.00
    $6,200.00 - $6,200.00
    Current price $6,200.00

    TwinTemp Junior Propane Tankless Water Heater

    PrecisionTemp

    On-Demand Hot Water & Hydronic Heat One heating zone with up to six blowers. Whisper quiet operation and no diesel smell. Designed specifica...

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    Original price $6,200.00 - Original price $6,200.00
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    $6,200.00
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    Current price $6,200.00
  • Original price $5,000.00 - Original price $5,000.00
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    $5,000.00
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    Current price $5,000.00

    TwinTemp-2 Natural Gas Tankless Water Heater

    PrecisionTemp

    Two different heating zones and up to eight blowers. Whisper quiet operation and no diesel smell. On-demand Hot Water & Hydronic Heat Design...

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    Original price $5,000.00 - Original price $5,000.00
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  • Original price $2,505.00 - Original price $2,605.00
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    Current price $2,505.00

    Rinnai SE+ Series with ThermaCirc360® 9 GPM Indoor Condensing Tankless Water Heater with Recirculation, NG

    Rinnai

    The Rinnai SE+ Series with ThermaCirc360® 9 GPM Indoor Condensing Tankless Water Heater is a high-capacity, natural gas-powered tankless water heat...

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    Original price $2,505.00 - Original price $2,605.00
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    Rinnai SE+ Series with ThermaCirc360® 9 GPM Outdoor Condensing Tankless Water Heater with Recirculation, LP

    Rinnai

    The Rinnai SE+ Series with ThermaCirc360® 9 GPM Outdoor Condensing Tankless Water Heater is a high-capacity, propane-powered tankless water heater ...

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    Original price $2,505.00 - Original price $2,605.00
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    Current price $2,505.00

    Rinnai SE+ Series with ThermaCirc360® 9 GPM Outdoor Condensing Tankless Water Heater with Recirculation, NG

    Rinnai

    The Rinnai SE+ Series with ThermaCirc360® 9 GPM Outdoor Condensing Tankless Water Heater is a high-capacity, natural gas-powered tankless water hea...

    View full details
    Original price $2,505.00 - Original price $2,605.00
    Original price
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  • Original price $2,269.00 - Original price $2,369.00
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    Current price $2,269.00

    Rinnai SE+ Series 10 GPM Indoor Condensing Tankless Water Heater, NG

    Rinnai

    Features: Wi-Fi Ready Control and Monitoring Remote Diagnostics and Maintenance Accessibility and Convenience Recirculation Solution Made Possible...

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    Original price $2,269.00 - Original price $2,369.00
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    Current price $2,269.00
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    Original price $2,992.00
    Current price $2,244.00
    $2,244.00 - $2,244.00
    Current price $2,244.00

    Rinnai SE+ Series with Smart-Circ™ 11 GPM Indoor Condensing Tankless Water Heater with Recirculation, NG

    Rinnai

    The Rinnai SE+ Series tankless water heater with Smart-Circ™ technology is a high-efficiency indoor condensing unit that provides hot water on dema...

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    Original price $2,992.00
    Original price $2,992.00 - Original price $2,992.00
    Original price $2,992.00
    Current price $2,244.00
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    Save $748.00 Save $0.00
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    Original price $2,992.00
    Current price $2,244.00
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    Current price $2,244.00

    Rinnai SE+ Series with Smart-Circ™ 11 GPM Outdoor Condensing Tankless Water Heater with Recirculation, LP - Replaces RUR199EP

    Rinnai

    The Rinnai SE+ Series tankless water heater with Smart-Circ™ technology is a high-efficiency, outdoor condensing unit that provides hot water on de...

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    Original price $2,992.00
    Original price $2,992.00 - Original price $2,992.00
    Original price $2,992.00
    Current price $2,244.00
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    Current price $2,244.00
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  • Original price $2,900.00
    Original price $2,900.00 - Original price $2,900.00
    Original price $2,900.00
    Current price $2,244.00
    $2,244.00 - $2,244.00
    Current price $2,244.00

    Rinnai SE+ Series with Smart-Circ™ 11 GPM Outdoor Condensing Tankless Water Heater with Recirculation, NG

    Rinnai

    The Rinnai SE+ Series with Smart-Circ™ 11 GPM Outdoor Condensing Tankless Water Heater is a high-performance, energy-efficient option for providing...

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    Original price $2,900.00
    Original price $2,900.00 - Original price $2,900.00
    Original price $2,900.00
    Current price $2,244.00
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  • Original price $3,092.00
    Original price $3,092.00 - Original price $3,092.00
    Original price $3,092.00
    Current price $2,244.00
    $2,244.00 - $2,244.00
    Current price $2,244.00

    Rinnai SE+ Series with Smart-Circ™ 11 GPM Indoor Condensing Tankless Water Heater with Recirculation, LP

    Rinnai

    Rinnai SE+ Series with Smart-Circ™ 11 GPM Indoor Condensing Tankless Water Heater with Recirculation, LP The Rinnai SE+ Series tankless water heate...

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    Original price $3,092.00
    Original price $3,092.00 - Original price $3,092.00
    Original price $3,092.00
    Current price $2,244.00
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    Current price $2,244.00
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  • Original price $2,215.00 - Original price $2,315.00
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    Current price $2,215.00

    Rinnai RE Series with Smart-Circ™ 7.9 GPM Indoor NCTWH with Recirculation and Pump, LP

    Rinnai

    The Rinnai RE Series with Smart-Circ™ 7.9 GPM Indoor NCTWH (Natural Gas Tankless Water Heater) is a high-efficiency water heating system that provi...

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    Original price $2,215.00 - Original price $2,315.00
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    Current price $2,215.00
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    Current price $2,215.00

    Rinnai RE Series with Smart-Circ™ 7.9 GPM Indoor NCTWH with Recirculation and Pump, NG

    Rinnai

    The Rinnai RE Series with Smart-Circ™ 7.9 GPM Indoor NCTWH (Natural Gas Tankless Water Heater) is a high-efficiency water heating system that provi...

    View full details
    Original price $2,215.00 - Original price $2,315.00
    Original price
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    Current price $2,215.00
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    $2,215.00 - $2,315.00
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    Current price $2,215.00

    Rinnai RE Series with Smart-Circ™ 7.9 GPM Outdoor NCTWH with Recirculation and Pump, LP

    Rinnai

    The Rinnai RE Series with Smart-Circ™ 7.9 GPM Outdoor NCTWH (Natural Gas Tankless Water Heater) is a high-efficiency water heating system that prov...

    View full details
    Original price $2,215.00 - Original price $2,315.00
    Original price
    $2,215.00 - $2,315.00
    $2,215.00 - $2,315.00
    Current price $2,215.00
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    Original price
    $2,215.00 - $2,315.00
    $2,215.00 - $2,315.00
    Current price $2,215.00

    Rinnai RE Series with Smart-Circ™ 7.9 GPM Outdoor NCTWH with Recirculation and Pump, NG

    Rinnai

    The Rinnai RE Series with Smart-Circ™ 7.9 GPM Outdoor NCTWH (Natural Gas Tankless Water Heater) is a high-efficiency water heating system that prov...

    View full details
    Original price $2,215.00 - Original price $2,315.00
    Original price
    $2,215.00 - $2,315.00
    $2,215.00 - $2,315.00
    Current price $2,215.00
  • Original price $2,505.00
    Original price $2,505.00 - Original price $2,505.00
    Original price $2,505.00
    Current price $1,878.75
    $1,878.75 - $1,878.75
    Current price $1,878.75

    Rinnai SE+ Series with Smart-Circ™ 9 GPM Indoor Condensing Tankless Water Heater with Recirculation, LP - Replaces RUR160IP

    Rinnai

    The Rinnai SE+ Series tankless water heater with Smart-Circ™ technology is a high-efficiency indoor condensing unit that provides hot water on dema...

    View full details
    Original price $2,505.00
    Original price $2,505.00 - Original price $2,505.00
    Original price $2,505.00
    Current price $1,878.75
    $1,878.75 - $1,878.75
    Current price $1,878.75
    Save $626.25 Save $0.00
  • Original price $2,505.00
    Original price $2,505.00 - Original price $2,505.00
    Original price $2,505.00
    Current price $1,878.75
    $1,878.75 - $1,878.75
    Current price $1,878.75

    Rinnai SE+ Series with Smart-Circ™ 9 GPM Indoor Condensing Tankless Water Heater with Recirculation, NG

    Rinnai

    The Rinnai SE+ Series tankless water heater with Smart-Circ™ technology is a high-efficiency indoor condensing unit that provides hot water on dema...

    View full details
    Original price $2,505.00
    Original price $2,505.00 - Original price $2,505.00
    Original price $2,505.00
    Current price $1,878.75
    $1,878.75 - $1,878.75
    Current price $1,878.75
    Save $626.25 Save $0.00
  • Original price $2,505.00
    Original price $2,505.00 - Original price $2,505.00
    Original price $2,505.00
    Current price $1,878.75
    $1,878.75 - $1,878.75
    Current price $1,878.75

    Rinnai SE+ Series with Smart-Circ™ 9 GPM Outdoor Condensing Tankless Water Heater with Recirculation, LP

    Rinnai

    The Rinnai SE+ Series tankless water heater with Smart-Circ™ technology is a high-efficiency, outdoor condensing unit that provides hot water on de...

    View full details
    Original price $2,505.00
    Original price $2,505.00 - Original price $2,505.00
    Original price $2,505.00
    Current price $1,878.75
    $1,878.75 - $1,878.75
    Current price $1,878.75
    Save $626.25 Save $0.00
  • Original price $1,878.75 - Original price $1,878.75
    Original price
    $1,878.75
    $1,878.75 - $1,878.75
    Current price $1,878.75

    Rinnai SE+ Series with Smart-Circ™ 9 GPM Outdoor Condensing Tankless Water Heater with Recirculation, NG

    Rinnai

    The Rinnai SE+ Series with Smart-Circ™ 9 GPM Outdoor Condensing Tankless Water Heater is a high-capacity, natural gas-powered tankless wa...

    View full details
    Original price $1,878.75 - Original price $1,878.75
    Original price
    $1,878.75
    $1,878.75 - $1,878.75
    Current price $1,878.75
  • Original price $1,854.75 - Original price $1,954.75
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    $1,854.75 - $1,954.75
    Current price $1,854.75

    Rinnai SE+ Series 11 GPM Outdoor Condensing Tankless Water Heater, NG

    Rinnai

    The Rinnai SE+ Series tankless water heater is a high-efficiency, outdoor condensing unit that provides hot water on demand. It has a flow rate of ...

    View full details
    Original price $1,854.75 - Original price $1,954.75
    Original price
    $1,854.75 - $1,954.75
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    Current price $1,854.75
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    $1,854.75 - $1,954.75
    $1,854.75 - $1,954.75
    Current price $1,854.75

    Rinnai SE+ Series 11 GPM Outdoor Condensing Tankless Water Heater, LP

    Rinnai

    The Rinnai SE+ Series tankless water heater is a high-efficiency, outdoor condensing unit that provides hot water on demand. It has a flow rate of ...

    View full details
    Original price $1,854.75 - Original price $1,954.75
    Original price
    $1,854.75 - $1,954.75
    $1,854.75 - $1,954.75
    Current price $1,854.75
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    $1,854.75 - $1,954.75
    $1,854.75 - $1,954.75
    Current price $1,854.75

    Rinnai SE+ Series 11 GPM Indoor Condensing Tankless Water Heater, NG

    Rinnai

    The Rinnai SE+ Series 11 GPM Indoor Condensing Tankless Water Heater is a high-performance, energy-efficient option for providing hot water to your...

    View full details
    Original price $1,854.75 - Original price $1,954.75
    Original price
    $1,854.75 - $1,954.75
    $1,854.75 - $1,954.75
    Current price $1,854.75
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    Original price
    $1,854.75 - $1,954.75
    $1,854.75 - $1,954.75
    Current price $1,854.75

    Rinnai SE+ Series 11 GPM Indoor Condensing Tankless Water Heater, LP

    Rinnai

    The Rinnai SE+ Series tankless water heater is a high-efficiency, indoor condensing unit that provides hot water on demand. It has a flow rate of 1...

    View full details
    Original price $1,854.75 - Original price $1,954.75
    Original price
    $1,854.75 - $1,954.75
    $1,854.75 - $1,954.75
    Current price $1,854.75
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    Original price $1,500.00
    $1,853.00 - $1,953.00
    $1,853.00 - $1,953.00
    Current price $1,853.00

    Rinnai RE Series 9.8 GPM Indoor NCTWH - LP

    Rinnai

    Features: Clean Internal Layout LED Screen Safety Handle and Seating Bracket Easy Open / Close Access Programmable Service Reminders Compact Coppe...

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    Original price $1,500.00 - Original price $1,500.00
    Original price $1,500.00
    $1,853.00 - $1,953.00
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    Current price $1,853.00