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Top 10 Best electric instant water heater Reviews

Top 10 Best electric instant water heater in 2022 Comparison Table

Bestseller No. 1
Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray
  • 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
Bestseller No. 2
Tankless Water Heater Electric 240V, On Demand Hot Water Heater Digital Display 5.5kW,Electric Instant Hot Water Heater,Overheating Protection, Black
  • 【INSTANT & SUFFICIENT HOT WATER】Applied with 5.5KW heating system, the electric water heater supplies instant, consistent and endless hot water of 116℉or higher temp shortly, no waiting for preheat nor terrible temp up & down, perfect companion for sinks. Time to get rid of those "lukewarm" toys.
  • 【SMART SELF ADJUSTMENT】The hot water heater adjusts power input based on flow rate and temp setting in real time. For example, less power will be applied by the system when waterflow reduced, thus you still get ideal temperature instead of scalding hot water, which means comfortable experience. Optimal energy efficiency of 98% saves considerable electric charge.
  • 【CONVENIENT USE】The tankless water heater comes with digital display & touch control panel so temp setting is easy job. Now turn on the tap and let the smart unit do the rest, you needn’t go through hard lesson about temp setting by a mixer tap without any hint. This Black model does not comes with Remote control, useful for installation under sink.
  • 【SAFE and DURABLE】Applied with multiple protection devices, every piece goes through strict tests to ensure 100% safe. Inner water and electricity lines are designed to run separately so as to avoid leakage or harm of scale build up. Approval by ETL and qualifies for UL, you can expect outstanding performance for years to come.
  • 【POINT of USE】The sleek tankless water heater is compact as an oatmeal box, making it possible to install anywhere close to outlet and avoid energy waste. It can be mounted horizontally, vertically, obliquely, ideal for kitchen, bar, school, hospital, community and hair salon. Please verify it is the right size for you: [email protected]; dimensions 11" x 7.5" x 2.35"; pipes fittings :1/2" NPT.
Bestseller No. 3
VELOSAN Electric Tankless Water Heater, 14.6kW 240V, On Demand Instant Water Heater with Fahrenheit Digital Display for Home, Office, Restaurant
  • 【Endless Hot Water】No need to preheat and wait. A few seconds can have a suitable temperature of hot water supply. Constant water flow, stable water temperature, the water flow won't decrease as the temperature rises.
  • 【Multiple Protection】VELOSAN water heater has ETL certification and has flame-retardant device. It will automatically stop heating when it detects that there is no water passing through. With multiple protection measures such as leakage protection, overheating protection, etc. Protect your safety during use.
  • 【Time & Space Saving】The tankless water heater has small volume and takes up little space. There is no need to waste time to reheat after restarting the equipment. It is ready to use, which greatly reduce the use of fuel and energy.
  • 【High Performance & Low Cost】Water and electricity separation design: The heating element and the water pipe are separated from each other, which highly reduces the formation of scale and corrosion, increases the service life of the water heater, and reduces maintenance costs.
  • 【After-sales Service】2-year warranty and 24/7 customer service. Easy to install, the power of the water heater is relatively large, so a circuit breaker must be installed. We recommend that you find a professional electrician for installation. Before installation, please make sure that the specifications of the wires are correct.
SaleBestseller No. 4
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
Bestseller No. 5
Bosch Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon (ES2.5) - Eliminate Time for Hot Water - Shelf, Wall or Floor Mounted
  • CONVENIENT HOT WATER HEATER: 2.5 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. Thermal efficiency is 98%. Dimensions : 13.75 W x 13.75 H x 10.75 D Inches
  • LONG LASTING QUALITY: This electric water heater is easy to maintain and has premium glass-lined material for a long service life. (Amps 12A, Volts (VAC) 120)
  • INDEPENDENT INSTALLATION: 36-37" cord plugs into a 120 volt outlet for independent installation or in-line with a large hot water source
  • FAST RECOVERY RATE: Eliminates long waits for hot water at your sink, get on demand hot water at your every need (supplies up to 2 sinks at a time)
  • EASILY MOUNTED: Can be shelf, wall or floor mounted (bracket included); simply tap into the cold water line and install the water heater directly at the sink to provide hot water
Bestseller No. 6
Bosch Electric Mini-Tank Water Heater Tronic 3000 T 7-Gallon (ES8) - Eliminate Time for Hot Water - Shelf, Wall or Floor Mounted
  • CONVENIENT HOT WATER HEATER: 7 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. Thermal efficiency is 98%. Dimensions : 17.5 W x 17.5 H x 14.5 D Inches
  • INSTALLED VERTICALLY OR HORIZONTALLY: This larger model can be mounted vertically (5.1 gal. of water supply) or horizontally (7 gal. of water supply)- vertical orientation is installed with the cold and hot lines on top of the unit
  • RELIABLE WATER SOURCE: Easily hard-wire the 7-gallon model to provide the on-demand reliable water source your home or office needs
  • IMPORTANT INFORMATION: Heating capacity of 1440 watts and a temperature range of 65-145°F max. Operating pressure-150 psi. Water fittings-3/4 inch Male NPT. Electrical requirements (Amp 12A/Volts 120)
  • EASILY MOUNTED: Can be shelf, wall or floor mounted (bracket included for vertical orientation only); simply tap into the cold water line and install the water heater directly at the sink to provide hot water
Bestseller No. 7
Airthereal Electric Tankless Water Heater 18kW, 240Volts - Endless On-Demand Hot Water - Self Modulates to Save Energy Use - Small Enough to Install Anywhere - for 2 Showers, Evening Tide series
  • ☼ Endless Hot Water: Imagine you are the last one in your family to take a shower before heading out for the day. You turn on the faucet and the water is freezing cold. Too bad you don’t have an Airthereal Electric Tankless Water to provide endless hot water on demand with no preheating, temperature fluctuations, or running out of hot water in the tank.
  • ☼ Save Space: That water heater in the basement or utility closet takes up a ton of space. This wall-mounted water heater uses 90% less space than a traditional hot water heater with a tank.
  • ☼ Save Energy: Water is only heated when you need it, not stored in a hot water tank. The self-modulating temperature technology only uses energy to heat up water while you are using it to save up to 50% on water heating costs compared to a typical tank water heater.
  • ☼ Important Note: In order to install 18kW Electric Tankless Water Heater it would requires 240 Voltage, 2 x 40 AMP Circuit Breaker Size and a set of 2 x (8AWG/2) wires. Please check to confirm that your breaker panel meet these specifications.
  • ☼ Safe To Use: With high temp protection, dry heating protection, and electrical leakage protection you can rest easily knowing you have safe, on-demand hot water to use on your schedule. The electric and fluid systems are completely separated to prevent electric leakage and water pipe corrosion.
Bestseller No. 8
Rheem 18kW 240V Tankless Electric 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
Bestseller No. 9
Rinnai V65EP Tankless Hot Water Heater, 6.5 GPM, Propane, Outdoor Installation
  • Endless Hot Water: Enjoy unlimited hot water flow throughout the house; compact, durable, and easy to install; professional installation recommended
  • Energy and Space Efficient: Space-saving design conserves energy as it heats only when necessary
  • Optimal Water Pressure: High-performance up to 6.5 GPM hot water flow rate for a powerful, constant stream
  • Enhanced scale detection lessens possibility of serious, long-term damage to unit
  • Guaranteed to Last: 10-, 5-, and 1-year residential factory warranty for heat exchanger, labor, and parts, respectively
Bestseller No. 10
Rheem 11kW 240V Tankless Electric Water Heater
  • ON/OFF Dial Control with adjustable digital temperature display
  • Self-modulating power control
  • 11kW Model Flow Rate: up to 2.68 GPM
  • Side 1/2" NPT water connections
  • On demand, consistent and continuous hot water
Are you searching for top 10 rated electric instant water heater for your money in 2022? After evaluating and analyzing in detail more than 54,756 customer satisfaction about top 10 best electric instant water heater in 2022, we have come up with the top 10 rated products you may be interested in. We have ranked the best brands from Artificial Intelligent and Big Data, as you see below:

Our Best Choice: Camplux Tankless Electric Water Heater 18kW 240V, Instant Hot Water Heater, On-Demand Water Heaters with Digital Display and Remote Control White

Our rating:4.9 out of 5 stars (4.9 / 5)


Product Description


Camplux Tankless Water Heater Electric 18kW 240V – TE18W

hot water heater electrichot water heater electric

The Camplux electric water heater TE18W applied an 18kW heating system, the electric water heater offers you instant, endless, and consistent temperature hot water in 24 hours of 7 days.

This instant hot water heater with compact size can be mounted at any angle, perfect for kitchen, school, bathroom sinks, hospital, and a hair salon.

The on-demand hot water heater will only draw the amount of electricity required to produce the hot water, no need for pre-heating to save energy and heat up in seconds. Multiple protection to ensure your safety.

The tankless electric water heater is leakage proof and over-heat protection will start when the temperature reaches 153°F. Smart control, remember your favorite temperature, and convertible freely for Fahrenheit and Celsius.

The Camplux electric water heater will bring you outstanding performance and a comfortable hot shower.

Kindly note: This is an electric unit that requires a professional licensed technician to install per city/state safety code.

camplux tankless water heatercamplux tankless water heater


Why choose Camplux ?

Camplux dedicated to providing you an easy and efficient lifestyle. Portability, energy-saving, and innovation are the three key elements for Camplux. With the most advanced technology in water heating, our electric tankless water heaters can save you up to 50 percent on water heating costs. Camplux water heaters save you money, they are also compact and wall-mounted so you save valuable storage space for a new closet!

INSTANT ENDLESS HOT WATER – No need to pre-heating and get hot water in seconds.

REMOTE SMART CONTROLLER – Remember your favorite temperature and convenient to use even install under sink.

FLEXIBLE 180° INSTALLATION – Can be mounted at any angle, ideal for bathroom, kitchen, school, hospital, and a hair salon.

COMPACT SIZE – For indoor installation with compact and space-saving design.

Voltage: 240V

Wattage: 18kW

Rated Current: 75A

Min. Required Circuit Breaker: 2x50A (Double pole breaker)

Min. Wire Size: 8AWG

Min. Water Flow To Activate: 0.85GPM

Temp. Range: 86°F – 125°F

Water Connection: 3/4”NPT

On-Demand Hot Water Heater Details





Smart Touch Control and LED Display

Switch freely between °F & °C. Temperature setting ±1 degree accuracy

Remote Controller

Very convenient even install under sink.

Standard 3/4 NPT Fitting

Supplies instant, consistent and endless hot water.

Flexible 180° Installation

Stylish, modern design that blends in any location.

Multifunctional water heaterMultifunctional water heater













Temp. Range

85°F – 131°F

85°F – 131°F

86°F – 125°F

86°F – 125°F

86°F – 125°F

Rated Current






Min. Required Circuit Breaker


30A (Double pole breaker)

60A (Double pole breaker)

2x50A (Double pole breaker)

3x50A (Double pole breaker)

Min. Water Flow To Activate






Min. Wire Size






Water Connection












Product Dimensions






Three Savings: With an efficiency of 99.8%, this tankless electric water heater can save up to 60% on water heating costs. Hot water in three seconds after switching on saves time, easy to get water between 86°F – 125°F; Small size 15.15 x 10.23 x 3.66″ saves space
Safety Protection: The instant water heater comes with NFS and ETL certification and overheating protection. When the temperature is too high, the water heater will automatically trip to ensure the safety of you and your family
Smart Design – The point of use water heater design with touch control & digital display, smart and easy to set temperature. Comes with a remote smart controller, you can set the desired temperature even if you are not in front of the tankless hot water heater
Durable: The on-demand hot water heater is equipped with a pressure relief valve, which can drain the water after use in winter, which can effectively prevent the freezing and cracking of the water pipe in the water heater so that the water heater can be used for a longer time
Tips: The 18kW 240V tankless water heater requires a 2 x 50 AMP double pole breaker, 8 AWG wire, and water connection 3/4” NPT. The min. Water Flow is 0.85GPM. 1-year limited warranty and 24/7 customer support services

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