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Under Tank Heater

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

This is actually the leading selected item of other clients buying items related to under tank heater. For further choices, check out our full catalog of Under Tank 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,...
    (4591)
    $222.47
    Buy on Amazon
    SaleBestseller No. 2 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...
    (2068)
    $449.33
    Buy on Amazon
    SaleBestseller No. 3 EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1
    EcoSmart ECO 27 Tankless Water Heater, Electric,...
    (2609)
    $443.26
    Buy on Amazon
  • Best  Portable Space Heater
  • Table of Contents

    • 1 Best Under Tank Heater Reviews
    • 2 Offers and Discounts
    • 3 Cheap Under Tank Heater
    • 4 Buy Under Tank Heater Online
      • 4.1 EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology
      • 4.2 EcoSmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating Technology
      • 4.3 EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1
      • 4.4 EcoSmart ECO 8 Tankless Water Heater, Electric, 8-kW - Quantity 1
      • 4.5 Ecosmart ECO 36 36kw 240V Electric Tankless Water Heater
      • 4.6 Rinnai V65eP Non-Condensing Propane Tankless Water Heater, Outdoor Installation, Up to 6.5 GPM
      • 4.7 Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater, 3.5KW@120-Volt, 6 x 11 x 3 Inch
      • 4.8 Ecosmart ECO 24 24 KW at 240-Volt Electric Tankless Water Heater with Patented Self Modulating Technology, 17 x 17 x 3.5
      • 4.9 Ecosmart POU 6 Point of Use Electric Tankless Water Heater, 6 KW,White,1/20, 1/40, 1/95
      • 4.10 3/4 IPS LF EXP E2 With PRV Tankles
    • 5 Best Under Tank Heater 2024

    Best Under Tank Heater Reviews

  • Comparative review of the top 3 Under Tank 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 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating Technology
    EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1
    Nº 19,4Very Good
    Nº 29,5Very Good
    Nº 39,4Very Good
    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. 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
    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
    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
    Nº 19,4Very Good
    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 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
    Nº 29,5Very Good
    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
    GOOD PRICE QUALITY RATIO
    EcoSmart
    EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1
    EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1
    Score
    Nº 39,4Very Good
    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
  • Offers and Discounts

    If you are looking for cheap Under Tank 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
    −26% $222.47
    SaleBestseller No. 2
    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
    −10% $449.33
    SaleBestseller No. 3
    EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1
    Required Breaker Quantity: Three 40 Amp Double Pole; Recommended Electrical Panel: 200 Amps
    −30% $443.26
    SaleBestseller No. 4
    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% $599.00
    SaleBestseller No. 5
    Ecosmart ECO 24 24 KW at 240-Volt Electric Tankless Water Heater with Patented Self Modulating Technology, 17 x 17 x 3.5
    Lifetime warranty; Never run out of hot water with an ECOSMART tankless water heater; Patented Self Modulating Technology and design.Activation flow 0.3 GPM
    −15% $501.10
    SaleBestseller No. 6
    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
    −27% $144.65
    SaleBestseller No. 7
    3/4 IPS LF EXP E2 With PRV Tankles
    Size is 3/4in; Tankless Water Heater Service Valves; 1 per carton - 10 per case - Individually Priced & Sold
    −21% $89.50
  • If there are no available offers now, bookmark this page and come back tomorrow. Price and availability may change quickly.

  • Cheap Under Tank Heater

    The cheapest options among the top 10:

    SaleBestseller No. 1 3/4 IPS LF EXP E2 With PRV Tankles
    3/4 IPS LF EXP E2 With PRV Tankles
    (1054)
    $89.50
    Buy on Amazon
    SaleBestseller No. 2 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...
    (231)
    $144.65
    Buy on Amazon
    Bestseller No. 3 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...
    (684)
    $191.97
    Buy on Amazon
  • Buy Under Tank Heater Online

  •  
    EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology
    4,591 Reviews

    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
    $222.47
    Buy on Amazon
     
    EcoSmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating Technology
    2,068 Reviews

    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
    $449.33
    Buy on Amazon
     
    EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1
    2,609 Reviews

    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
    $443.26
    Buy on Amazon
     
    EcoSmart ECO 8 Tankless Water Heater, Electric, 8-kW - Quantity 1
    555 Reviews

    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
    $252.57
    Buy on Amazon
     
    Ecosmart ECO 36 36kw 240V Electric Tankless Water Heater
    583 Reviews

    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
    $599.00
    Buy on Amazon
     
    Rinnai V65eP Non-Condensing Propane Tankless Water Heater, Outdoor Installation, Up to 6.5 GPM
    2,419 Reviews

    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
    $757.22
    Buy on Amazon
     
    Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater, 3.5KW@120-Volt, 6 x 11 x 3 Inch
    684 Reviews

    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
    $191.97
    Buy on Amazon
     
    Ecosmart ECO 24 24 KW at 240-Volt Electric Tankless Water Heater with Patented Self Modulating Technology, 17 x 17 x 3.5
    260 Reviews

    Ecosmart ECO 24 24 KW at 240-Volt Electric Tankless Water Heater with Patented Self Modulating Technology, 17 x 17 x 3.5

    • Lifetime warranty
    • Save up to 60-percent on your water heating cost with an ECOSMART electric tankless water heater
    • Never run out of hot water with an ECOSMART tankless water heater
    • Patented Self Modulating Technology and design.Activation flow 0.3 GPM
    • ECOSMART tankless water heaters are 99.8-percent energy efficient
    • 100 A
    $501.10
    Buy on Amazon
     
    Ecosmart POU 6 Point of Use Electric Tankless Water Heater, 6 KW,White,1/20, 1/40, 1/95
    231 Reviews

    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
    $144.65
    Buy on Amazon
     
    3/4 IPS LF EXP E2 With PRV Tankles
    1,054 Reviews

    3/4 IPS LF EXP E2 With PRV Tankles

    • Lead Free - Meets all federal & state standards for lead levels in drinking water system components.
    • Size is 3/4in
    • Tankless Water Heater Service Valves
    • 1 per carton - 10 per case - Individually Priced & Sold
    • Includes a residential pressure relief valve (150 PSI/200,000 BTU)
    • 500 WOG
    $89.50
    Buy on Amazon
  • After seeing the best Under Tank Heater 2023 lets look into the future:

    Best Under Tank Heater 2024

    These are the new Under Tank Heater releases available. Will the best Under Tank Heater 2024 be among them?

    New balacoo 3pcs Heating Temperature Under Mats Tank Cushion Sleeping USB Round Adjustment Turtle Mat with Heater Reptile Multi-Function Heated Small Reusable Terrarium Frogs
    balacoo 3pcs Heating Temperature Under Mats Tank...
    $28.39
    Buy on Amazon
    New Ipetboom 6 pcs Warming Reflective Heating Cushion Gecko Sleep Turtle Snake Keep Snail Supplies * Tortoise Cat Lizard Nest Heater Temperature Heated Tank Pad- Winter Multifunctional Film
    Ipetboom 6 pcs Warming Reflective Heating Cushion...
    $12.09
    Buy on Amazon
    New BCOATH 3pcs Pad/Heater Spider Insulation Kitten Tortoise Breeding Tank Reptile Multifunctional Terrarium Warm Pad- Aluminum and Nest Heating * Pad Cushion Warmer Mat Useful Lizard Snail
    BCOATH 3pcs Pad/Heater Spider Insulation Kitten...
    $9.19
    Buy on Amazon
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    Last update 2021-09-03. Price and product availability may change.

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