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Instant Water Heater

EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology

This is actually the top rated selected item of other customers purchasing items related to instant water heater. For additional options, check out our catalog of Instant Water Heater or use the search box.

  • SaleBestseller No. 1 EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology
    EcoSmart ECO 11 Electric Tankless Water Heater,...
    $200.00
    Buy on Amazon
    SaleBestseller No. 2 EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1
    EcoSmart ECO 27 Tankless Water Heater, Electric,...
    $433.26
    Buy on Amazon
    SaleBestseller No. 3 EcoSmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating Technology
    EcoSmart ECO 18 Electric Tankless Water Heater, 18...
    $428.99
    Buy on Amazon
  • Best  Baseboard Heater Cover
  • Table of Contents

    • 1 Best Instant Water Heater Reviews
    • 2 Offers and Discounts
    • 3 Cheap Instant Water Heater
    • 4 Buy Instant Water Heater Online
      • 4.1 EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology
      • 4.2 EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1
      • 4.3 EcoSmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating Technology
      • 4.4 EcoSmart ECO 8 Tankless Water Heater, Electric, 8-kW - Quantity 1
      • 4.5 Eccotemp i12-LP Water Heater, 4 GPM, Black
      • 4.6 Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater, 3.5KW@120-Volt, 6 x 11 x 3 Inch
      • 4.7 Rinnai V65eP Non-Condensing Propane Tankless Water Heater, Outdoor Installation, Up to 6.5 GPM
      • 4.8 Ecosmart ECO 36 36kw 240V Electric Tankless Water Heater
      • 4.9 Ecosmart POU 6 Point of Use Electric Tankless Water Heater, 6 KW,White,1/20, 1/40, 1/95
      • 4.10 Rinnai RL94iN Non-Condensing Natural Gas Tankless Water Heater, Indoor Installation, Up to 9.8 GPM
    • 5 Best Instant Water Heater 2024

    Best Instant Water Heater Reviews

  • Comparative review of the top 3 Instant Water Heater options available:
    TOP CHOICE
    EcoSmart
    EcoSmart
    GOOD PRICE QUALITY RATIO
    EcoSmart
    Simba- Disney Minnie Peluche, Multicolor, 25cm (6315874843)
    Simba- Disney Minnie Peluche, Multicolor, 25cm (6315874843)
    Simba- Disney Minnie Peluche, Multicolor, 25cm (6315874843)
    EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology
    EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1
    EcoSmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating Technology
    -
    -
    -
    1. Endless On-Demand Hot Water; Consistent hot water when you need it that never runs out; Continuously monitored water temperature and controlled flow rates ensure efficiency and consistent performance within 1 degree of selected temperature
    2. Save Space; EcoSmart tankless electric water heaters are 90% smaller than traditional tank heaters; may be installed on wall or at point of use; Dimensions 11.5 x 8 x 3.75 inches
    3. Save Energy; EcoSmart tankless electric water heaters are 99% thermal energy efficient; Only heats water when called unlike a tank heater that maintains water temperature even when not being used.
    4. EcoSmart ECO 11 Sizing; 13-kilowatt tankless electric water heater ideal for providing hot water for a bathroom, small sink, office breakroom and other point-of-use or low-flow applications; provides between 1.3 and 3.1 gallons-per-minute depending on the inlet water temperature; refer to the sizing guide to select the proper solution
    1. Endless on-Demand Hot Water; Consistent hot water when you need it that never runs out; Continuously monitored water temperature and controlled flow rates ensure efficiency and consistent performance within 1 degree of selected temperature
    2. Save Space; EcoSmart tankless electric water heaters are 90% smaller than traditional tank heaters; may be installed on wall or at point of use; Dimensions 17 x 17 x 3.75 inches 
    3. Save Energy; EcoSmart tankless electric water heaters are 99% thermal energy efficient; Only heats water when called unlike a tank heater that maintains water temperature even when not being used. Save up to 50% in water heating costs according to the Department of Energy
    4. EcoSmart ECO 27 Sizing; Refer to the sizing map. Requires 3x40 AMP Double Pole Breaker, 27-kilowatt tankless electric water heater ideal for providing hot water for whole home applications; provides between 2.7 and 6.5 gallons-per-minute depending on the inlet water temperature; refer to the sizing guide to select the proper solution
    5. Warranty and Certifications; Limited Lifetime Warranty on electronics, exchanger and element; UL-499 certified; ETL Listed
    6. Required Breaker Quantity: Three 40 Amp Double Pole
    1. The product is highly durable
    2. The product is easy to use
    3. Manufactured in China
    4. Amperage (amps): 75. Activation flow: 0. 3 GPM. Flow Rate @ 35 F Rise (gallons/min): 3. 51 gal (US)/min
    5. The product works and is compatible with 2 X 40 AMP (DP) breakers and 2 X 8 AWG wire
    6. Lifetime warranty for residential use
    CHECK PRICE
    CHECK PRICE
    CHECK PRICE
    TOP CHOICE
    EcoSmart
    EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology
    EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology
    Score
    -
    1. Endless On-Demand Hot Water; Consistent hot water when you need it that never runs out; Continuously monitored water temperature and controlled flow rates ensure efficiency and consistent performance within 1 degree of selected temperature
    2. Save Space; EcoSmart tankless electric water heaters are 90% smaller than traditional tank heaters; may be installed on wall or at point of use; Dimensions 11.5 x 8 x 3.75 inches
    3. Save Energy; EcoSmart tankless electric water heaters are 99% thermal energy efficient; Only heats water when called unlike a tank heater that maintains water temperature even when not being used.
    4. EcoSmart ECO 11 Sizing; 13-kilowatt tankless electric water heater ideal for providing hot water for a bathroom, small sink, office breakroom and other point-of-use or low-flow applications; provides between 1.3 and 3.1 gallons-per-minute depending on the inlet water temperature; refer to the sizing guide to select the proper solution
    CHECK PRICE
    EcoSmart
    EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1
    EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1
    Score
    -
    1. Endless on-Demand Hot Water; Consistent hot water when you need it that never runs out; Continuously monitored water temperature and controlled flow rates ensure efficiency and consistent performance within 1 degree of selected temperature
    2. Save Space; EcoSmart tankless electric water heaters are 90% smaller than traditional tank heaters; may be installed on wall or at point of use; Dimensions 17 x 17 x 3.75 inches 
    3. Save Energy; EcoSmart tankless electric water heaters are 99% thermal energy efficient; Only heats water when called unlike a tank heater that maintains water temperature even when not being used. Save up to 50% in water heating costs according to the Department of Energy
    4. EcoSmart ECO 27 Sizing; Refer to the sizing map. Requires 3x40 AMP Double Pole Breaker, 27-kilowatt tankless electric water heater ideal for providing hot water for whole home applications; provides between 2.7 and 6.5 gallons-per-minute depending on the inlet water temperature; refer to the sizing guide to select the proper solution
    5. Warranty and Certifications; Limited Lifetime Warranty on electronics, exchanger and element; UL-499 certified; ETL Listed
    6. Required Breaker Quantity: Three 40 Amp Double Pole
    CHECK PRICE
    GOOD PRICE QUALITY RATIO
    EcoSmart
    EcoSmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating Technology
    EcoSmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating Technology
    Score
    -
    1. The product is highly durable
    2. The product is easy to use
    3. Manufactured in China
    4. Amperage (amps): 75. Activation flow: 0. 3 GPM. Flow Rate @ 35 F Rise (gallons/min): 3. 51 gal (US)/min
    5. The product works and is compatible with 2 X 40 AMP (DP) breakers and 2 X 8 AWG wire
    6. Lifetime warranty for residential use
    CHECK PRICE
  • Offers and Discounts

    If you are looking for cheap Instant Water Heater, here we will post any offer that we find:

  • SaleBestseller No. 1
    EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology
    −33% $200.00
    SaleBestseller No. 2
    EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1
    Required Breaker Quantity: Three 40 Amp Double Pole; Recommended Electrical Panel: 200 Amps
    −31% $433.26
    SaleBestseller No. 3
    EcoSmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating Technology
    The product is highly durable; The product is easy to use; Manufactured in China; The product works and is compatible with 2 X 40 AMP (DP) breakers and 2 X 8 AWG wire
    −14% $428.99
    SaleBestseller No. 4
    Eccotemp i12-LP Water Heater, 4 GPM, Black
    −39% $300.99
    SaleBestseller No. 5
    Ecosmart ECO 36 36kw 240V Electric Tankless Water Heater
    Sleek and compact design with digital output temperature display; ECOSMART tankless water heaters are 99.8-percent energy efficient
    −20% $597.12
  • If there are no available offers, bookmark this page and come back soon. Price and availability change quickly.

  • Cheap Instant Water Heater

    The cheapest options among the top 10:

    Bestseller No. 1 Rinnai RL94iN Non-Condensing Natural Gas Tankless Water Heater, Indoor Installation, Up to 9.8 GPM
    Rinnai RL94iN Non-Condensing Natural Gas Tankless...
    Buy on Amazon
    Bestseller No. 2 Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater, 3.5KW@120-Volt, 6 x 11 x 3 Inch
    Ecosmart POU 3.5 Point of Use Electric Tankless...
    $191.48
    Buy on Amazon
    Bestseller No. 3 Ecosmart POU 6 Point of Use Electric Tankless Water Heater, 6 KW,White,1/20, 1/40, 1/95
    Ecosmart POU 6 Point of Use Electric Tankless...
    $192.13
    Buy on Amazon
  • Buy Instant Water Heater Online

  •  
    EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology

    EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology

    • Endless On-Demand Hot Water; Consistent hot water when you need it that never runs out; Continuously monitored water temperature and controlled flow rates ensure efficiency and consistent performance within 1 degree of selected temperature
    • Save Space; EcoSmart tankless electric water heaters are 90% smaller than traditional tank heaters; may be installed on wall or at point of use; Dimensions 11.5 x 8 x 3.75 inches
    • Save Energy; EcoSmart tankless electric water heaters are 99% thermal energy efficient; Only heats water when called unlike a tank heater that maintains water temperature even when not being used.
    • EcoSmart ECO 11 Sizing; 13-kilowatt tankless electric water heater ideal for providing hot water for a bathroom, small sink, office breakroom and other point-of-use or low-flow applications; provides between 1.3 and 3.1 gallons-per-minute depending on the inlet water temperature; refer to the sizing guide to select the proper solution
    $200.00
    Buy on Amazon
     
    EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1

    EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1

    • Endless on-Demand Hot Water; Consistent hot water when you need it that never runs out; Continuously monitored water temperature and controlled flow rates ensure efficiency and consistent performance within 1 degree of selected temperature
    • Save Space; EcoSmart tankless electric water heaters are 90% smaller than traditional tank heaters; may be installed on wall or at point of use; Dimensions 17 x 17 x 3.75 inches 
    • Save Energy; EcoSmart tankless electric water heaters are 99% thermal energy efficient; Only heats water when called unlike a tank heater that maintains water temperature even when not being used. Save up to 50% in water heating costs according to the Department of Energy
    • EcoSmart ECO 27 Sizing; Refer to the sizing map. Requires 3x40 AMP Double Pole Breaker, 27-kilowatt tankless electric water heater ideal for providing hot water for whole home applications; provides between 2.7 and 6.5 gallons-per-minute depending on the inlet water temperature; refer to the sizing guide to select the proper solution
    • Warranty and Certifications; Limited Lifetime Warranty on electronics, exchanger and element; UL-499 certified; ETL Listed
    • Required Breaker Quantity: Three 40 Amp Double Pole
    $433.26
    Buy on Amazon
     
    EcoSmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating Technology

    EcoSmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating Technology

    • The product is highly durable
    • The product is easy to use
    • Manufactured in China
    • Amperage (amps): 75. Activation flow: 0. 3 GPM. Flow Rate @ 35 F Rise (gallons/min): 3. 51 gal (US)/min
    • The product works and is compatible with 2 X 40 AMP (DP) breakers and 2 X 8 AWG wire
    • Lifetime warranty for residential use
    $428.99
    Buy on Amazon
     
    EcoSmart ECO 8 Tankless Water Heater, Electric, 8-kW - Quantity 1

    EcoSmart ECO 8 Tankless Water Heater, Electric, 8-kW - Quantity 1

    • The product is highly durable
    • The product is easy to use
    • Manufactured in China
    • Heating elements are durable and are threaded for easy replacement
    • Activation Flow - 0.3 GPM
    $251.29
    Buy on Amazon
     
    Eccotemp i12-LP Water Heater, 4 GPM, Black

    Eccotemp i12-LP Water Heater, 4 GPM, Black

    • Whole home indoor, gas powered tankless water heater, rated at 4 GPM that activates only on demand and no pilot light needed, reducing energy consumption
    • Sleek, modern design with black tempered glass front panel featuring an easy to use LED display controls
    • Features fully automatic temperature controls with an energy saving mode and child lock technology
    • Safe electronic ignition system; Plugs into standard 110v electrical outlet with UL-listed cord
    • Uses standard 1/2" NPT water fittings and comes with horizontal venting allowing for a convenient and quick installation
    $300.99
    Buy on Amazon
     
    Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater, 3.5KW@120-Volt, 6 x 11 x 3 Inch

    Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater, 3.5KW@120-Volt, 6 x 11 x 3 Inch

    • Can provide hot water for one sink at 0.5 GPM in warmer climates
    • Requires 1 x 30 amp breaker and 10 AWG wire
    • For one sink at 0.5 GPM in colder climates the POU 6 is recommended
    • Amperage Draw 29 amp. kW - 3.5 kW
    • Connection Fittings 1/2" NPT
    • Max temperature rise @ .5 GMP is 47.8°F Max temperature rise @ 1GPM is 23.9°F Max temperature rise @ 1.5 GPM is 15.9°F
    $191.48
    Buy on Amazon
     
    Rinnai V65eP Non-Condensing Propane Tankless Water Heater, Outdoor Installation, Up to 6.5 GPM

    Rinnai V65eP Non-Condensing Propane Tankless Water Heater, Outdoor Installation, Up to 6.5 GPM

    • Original Design: Tankless hot water heater only heats when necessary to conserve energy; For the latest in non-condensing technology and a cleaner layout that speeds up service and installation, check out our new RE160eP model
    • Never Run Out of Hot Water with this Compact Propane Water Heater: Non-condensing tankless hot water heater from Rinnai is only the size of a small suitcase and fits in a wide variety of spaces, but provides up to 6.5 GPM (5 fixtures at once)
    • Smart, Durable Design: Enhanced scale detection helps prevent serious, long-term damage to unit; Includes 15-, 5-, and 1-year residential guarantee for heat exchanger, labor, and parts, respectively; See Controlr module for WiFi control (not included)
    • Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to locate a qualified technician in your area to install your tankless water heater; We do not recommend installing a water heater without a technician
    • Find Your Rinnai: See our product guides, manuals, energy guide, warranty information, videos, and tables to find the right tankless water heater for your home; Check our Ground Water Temperature Map to see if this heater is optimal for your region
    $998.00
    Buy on Amazon
     
    Ecosmart ECO 36 36kw 240V Electric Tankless Water Heater

    Ecosmart ECO 36 36kw 240V Electric Tankless Water Heater

    • Sleek and compact design with digital output temperature display
    • ECOSMART tankless water heaters are 99.8-percent energy efficient
    • Manufactured in United States
    • Pipe Fittings:3/4 inch NPT
    • Required Breaker:4 x 40 A
    • 150 A
    $597.12
    Buy on Amazon
     
    Ecosmart POU 6 Point of Use Electric Tankless Water Heater, 6 KW,White,1/20, 1/40, 1/95

    Ecosmart POU 6 Point of Use Electric Tankless Water Heater, 6 KW,White,1/20, 1/40, 1/95

    • Can provide hot water for one sink at 0.5 GPM in warmer climates
    • Requires 1 x 30 amp breaker and 10 AWG wire
    • For one sink at 0.5 GPM in colder climates the POU 6 is recommended
    • This product is recommended for use with a single sink only. Do not use with a shower or multiple fixtures.
    • This unit operates at 220 volts and one should not use a plug while installing. This product is hard wired
    $192.13
    Buy on Amazon
     
    Rinnai RL94iN Non-Condensing Natural Gas Tankless Water Heater, Indoor Installation, Up to 9.8 GPM

    Rinnai RL94iN Non-Condensing Natural Gas Tankless Water Heater, Indoor Installation, Up to 9.8 GPM

    • Original Design: Tankless hot water heater's Circ-Logic technology offers recirculation patterns that match your habits; For the latest in non-condensing technology that speeds up service and installation, check out our new RE180iN model
    • Never Run Out of Hot Water with this Compact Tankless Gas Water Heater: Non-condensing tankless hot water heater from Rinnai is only the size of a small suitcase and fits in a wide variety of spaces, but provides up to 9.8 GPM (6 fixtures at once)
    • Smart, Durable Design: Includes 12-, 5-, and 1-year residential guarantee and 5-, 5-, and 1-year commercial factory warranty for heat exchanger, labor, and parts, respectively; See Controlr module for WiFi control (not included)
    • Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to locate a qualified technician in your area to install your tankless water heater; We do not recommend installing a water heater without a technician
    • Find Your Rinnai: See our product guides, manuals, energy guide, warranty information, videos, and tables to find the right tankless water heater for your home; Check our Ground Water Temperature Map to see if this heater is optimal for your region
    Buy on Amazon
  • After seeing the best Instant Water Heater 2023 lets look into the future:

    Best Instant Water Heater 2024

    These are the new Instant Water Heater releases available. Will the best Instant Water Heater 2024 be among them?

    New 220V Quickly Heating Faucet, ABS Material Instant Hot and Cold Water Dispenser Heater Quickly Heating Faucet Kitchen AU Plug
    220V Quickly Heating Faucet, ABS Material Instant...
    $55.76
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    New GEESEN 1500W 15L 110V US Plug Compact Size Instant Electric Tank Home Hot Water Heater Kitchens Hair Salons IPX4 Mini Instant Tankless Shower for Kitchen Bathroom 3 GallonNQY2 (15L)
    GEESEN 1500W 15L 110V US Plug Compact Size Instant...
    $199.00
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    New Mizudo Propane Gas Tankless Water Heater 4.3 GPM, 100,000 BTU Indoor Installation Instant Hot Water heater
    Mizudo Propane Gas Tankless Water Heater 4.3 GPM,...
    $469.00
    Buy on Amazon
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    Last update 2021-09-03. Price and product availability may change.

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