10 Best Tankless Electric Water Heaters 2024

Gareth Otwell Reviewed by Gareth Otwell | Last Updated:

Rheem RTEX-18 18kW 240V Electric Tankless Water Heater – ⭐ Best Overall Tankless Electric Water Heater

RTEX-18 by Rheem

  • Color: Gray
  • Weight: 14.8 pounds
  • Dimensions: 18.3 x 3.5 x 14.5 inches
Rheem RTEX-18 18kW 240V Electric Tankless Water Heater
  • External digital thermostatic control with LED display (+/1 degree accuracy)
  • Most advanced self-modulation, adjust power to meet hot water demand
  • Durable Copper immersion two heating elements, field Serviceable. Flow Rate- up to 4.4 GPM
  • Simple installation – bottom 3/4 inch NPT water connections
  • Threaded for easy replacement, simple installation, digital temperature display

Ecosmart ECO 36 36kw 240V Electric Tankless Water Heater – 👑 Premium Pick

ECO 36 by Ecosmart

  • Weight: 18.35 pounds
  • Dimensions: 3.6 x 21 x 17 inches
  • Warranty: Limited Lifetime Warranty
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

Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater

RTEX-13 by Rheem

  • Color: Gray
  • Weight: 0 pounds
  • Dimensions: 12.6 x 8.3 x 3.6 inches
Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater
  • External adjustable digital thermostatic control with LED display (+/1 degree accuracy
  • Durable Copper immersion two heating elements, field Serviceable.Self-modulating power control
  • Simple installation – 1/2 NPT adapters included; side 1/2 inch Compression water connections
  • 99.8% energy efficient. External controls to adjust temperature in increments of 1°f. Water-Saver Shower Head – 1.5 GPM
  • Threaded for easy replacement, simple installation, digital temperature display 54 A. 13kW Model Flow Rate: up to 3.17 GPM
  • 54 A

Rheem RTEX-24 24kW 240V Electric Tankless Water Heater

RTEX-24 by Rheem

  • Color: Gray
  • Weight: 17.8 pounds
  • Dimensions: 18.3 x 3.5 x 17.6 inches
Rheem RTEX-24 24kW 240V Electric Tankless Water Heater
  • ON/OFF Dial Control with adjustable digital temperature display
  • Self-modulating power control
  • 24kW Model Flow Rate: up to 5.9 GPM for RTEX-24
  • Bottom 3/4" NPT water connections
  • On demand, consistent and continuous hot water

EcoSmart 8 KW Electric Tankless Water Heater

ECO 8 by Ecosmart

  • Color: White
  • Weight: 4.75 pounds
  • Dimensions: 12 x 9.5 x 4 inches
  • Warranty: Lifetime Warranty on electronics, exchanger and element. Warranty only covers cost of heater; does not cover labor or any incidental damages.
EcoSmart 8 KW Electric Tankless Water Heater
  • 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

Instant Electric Tankless Hot Water Heater 110V 3800W Mini Shower – 💲 Best Budget Tankless Electric Water Heater

by DIFU

Instant Electric Tankless Hot Water Heater 110V 3800W Mini Shower
  • 【Instant Hot Water】:3000W rated power 50Hz frequency can provide you hot water range from 35-45℃ , get instant endless hot water easily , As soon as you turn on the tap,you just need to relax and wait for the hot water to come out
  • 【Lightweight Safety Design】: Mini size Approx. 13.5 x 6 x 16.5cm/ 5.31 x 2.36 x 6.59" and lightweight design for your home use. It can bring instant hot water for you at home when washing food or vegetable in kitchen
  • 【Energy Saving】:Compact and light weight structure with extraordinary energy saving technology. This electric water heater are designed with advanced combustion technology to decrease gas consumption and burning noise. Save more when using our tankless water heater
  • 【Safety Protection】: Leakage protection, IPX4 waterproof, Dry heating protection, Water-electricity isolation, Auto power-off at inactive state, Over-temperature automatic power-off
  • 【Worry Free Purchase】: US STOCK, delivery in 3-5 working day. We provide high quality products and great after sales customer service,customers could reach us for any problems and we will reply in 24 hours to solve your problem

Ecosmart ECO 24 24 KW at 240-Volt Electric Tankless Water

ECO24 by Ecosmart

  • Weight: 11 pounds
  • Dimensions: 17 x 17 x 3.8 inches
  • Warranty: Lifetime Warranty on electronics, exchanger and element. Warranty only covers cost of heater; does not cover labor or any incidental damages.
Ecosmart ECO 24 24 KW at 240-Volt Electric Tankless Water
  • 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

Hyperikon Tankless Water Heater Electric 11kw

HyperWater11KW by Hyperikon

  • Color: Black
  • Dimensions: 10.2 x 3.5 x 15.2 inches
Hyperikon Tankless Water Heater Electric 11kw
  • INSTANT HOT WATER - Enjoy never-ending hot water at any time of the day! It has a heat capacity of 37,543 BTU. Use the touch enabled control panel to set your desired temperature between 86°F and 126°F.
  • MINIMUM WATER FLOW 0.85 GPM - The minimum water flow for activation is 0.85 GPM. The power used is based on the gallons of water used per minute.
  • ENERGY-EFFICIENT - Hyperikon’s 11kw tank-less water heater will only draw the amount of electricity required to produce the hot water, with no pre-heating.
  • THREE 50A CIRCUIT BREAKERS - Connect this tankless water heater to 3 minimum 50A Circuit Breaker. Please refer to the installation manual before installing. The on demand water heater is leakage proof and also over-heat protected at 153°F (67°C)
  • 5 YEAR WARRANTY - When we say we've got you covered, we mean it. Should your product fail within the first 5 years from the date of purchase we will fulfill our promise and replace it free of charge to you.

Stiebel Eltron 230628 240V

230628 by Stiebel Eltron

  • Weight: 5.95 pounds
  • Dimensions: 4.1 x 7.9 x 14.2 inches
Stiebel Eltron 230628 240V
  • Set the knob on the front cover and enjoy water temperatures between 86DegreeF (30DegreeC) and 125DegreeF (52DegreeC)
  • The three years parts warranty is unique in the industry
  • Due to its small dimensions and attractive housing the DHC-E can be left unconcealed in many applications

Titan Electric Tankless Water Heater

N-120 by Titan

  • Color: White
  • Weight: 9 pounds
  • Dimensions: 4.8 x 9.6 x 12 inches
  • Warranty: Warning seal and screws cannot be tampered with unit cannot be opened
Titan Electric Tankless Water Heater
  • Tankless Water Heater
  • 220 V
  • 54 Max Amps

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