Best 240 V Water Heaters in 2026

On-demand, continuous and unlimited supply of hot water

Sleek design saves space and no venting required

Electronic switch activated for virtually silent operation. Phase- single 60 Hz. Voltage- 208 V. Wattage- 27 kW

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.

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

Saving Energy & Money- Built in insulation foam, reduces heat loss. 4-gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it.

High Quality Built & Elegant Design- Camplux electric water heater has glass-lined tank for long service life and easy to maintain. Elegant streamline design cover, made your kitchen more pretty.

UL Approval Safety - Thermostat Control allows adjustment of water temperature. High Limit device provide protection while overheating.

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

Tank less water heaters provide a continuous Supply of hot water and only heats the water you need, when you need it

Instant, consistent and endless hot water

The most advanced, self-modulating technology available, meaning the unit will adjust how much energy needs to be input based on how much hot water is needed

ON/OFF Dial Control with adjustable digital temperature display

Self-modulating power control

11kW Model Flow Rate: up to 2.68 GPM

No More Wait for Hot Water - Point of use 4 gallons mini tank water heater provides instant hot water where you need it with fast recovery, reducing standby loss. Thermal efficiency up to 99%

Easy Installations - Dimensions 14.5"W x 14.5"H x 12.9"D compact design, can be wall or floor mounted under sink / counter, plug into a standard 120V outlet, no special wiring required. Nominal current 12amps

Adjustable Temperature - Thermostat with 3 temperature level settings, range from 50°F to 149°F with high temperature limit protection, also a freeze mode to prevent tank from freezing

HEATS FAST + SIMPLE TO USE: You’ll have warm water in seconds, boiling water in just minutes. Fill your container, place the immersion heater in the liquid, then turn on the immersion heater. It’s that simple.

MAXIMUM SAFETY: Durable burn guard protects your coffee mug, cups, and bowls ensuring the coils never touch the sides of your dishes or containers. Safely heat coffee, tea, soup, hot chocolate, and more.

TRAVEL ADAPTER: Powered with a dual voltage system, (120 V for North America, and 240 V for Europe and other regions), and includes a European adapter and travel pouch; perfect for all your domestic and international travel needs

【INSTANT & SUFFICIENT HOT WATER】 With real powerful 18kW smart heating system, the tankless hot water heater electric ECO180B supplies sufficient instant and endless hot water of 120℉ or higher in seconds, no waiting for preheating nor terrible temp fluctuation during shower time any more and no worry of running out of it. Perfect companion for whole house use, including shower, sink faucets, dishwasher, washing machine, etc.

【SELF MODULATION INSTANT WATER HEATER】The electric on demand tankless hot water heater ECO180B adjusts exact power input based on current flowrate and temp setting. For example, less power will be consumed by the smart water heater when you reduce water flow, thus, you get ideal temperature instead of scalding hot, which ensures comfortable experience and excellent energy efficiency. Also, optimal energy efficiency of 98% saves considerable electric charge for you.

【CONVENIENT USE】The electric tankless water heater 18kW comes with digital display & touch control panel so temp setting is easy job. Best of all, useful information on the screen helps you get full understanding of the working status of the 240v water heater tankless, you needn’t go through hard lesson of temp setting. Now turn on the faucet and let the smart instant hot water heater do the rest.

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

HIGH QUALITY & LONG LAST - The 120V under sink water heater has UL listed and uses a glass-lined tank with good insulation, and freezing mode can prevent the water tank from freezing, ensure a long service life

EASY TO INSTALL & USE - Small water heater's dimensions 17.7 W × 17.7 H × 14.6 D inches can be shelves, wall, or floor-mounted (bracket included); Connect the water pipe, after filling the water tank, plug into the power supply (120V/12A), and it can be used normally

OVERHEAT PROTECTION - When the water temperature of the water heater exceeds 203°F, the under-counter water heater will automatically shut down. Protect the safety of you and your family

【INSTANT & SUFFICIENT HOT WATER】Applied with 5.5KW heating system, the on demand 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 electric hot water heater ECO55 adjusts power input based on flow rate and temp setting in real time. For example, less power will be applied by the system of smart instant hot water heater 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 electric comes with digital display & touch control panel so temp setting is easy job, you needn’t go through hard lesson of getting full understanding of working status of the 240v water heater tankless. Now turn on the tap and let the smart unit do the rest, just enjoy the instant hot water.

【INSTANT & SUFFICIENT HOT WATER】Applied with 9kW heating system, the electric tankless water heater ECO90B supplies instant & endless hot water of 116℉or higher temp, no waiting for preheat nor temperature fluctuations, perfect companion for sinks, bringing you perfect experience of comfort and relaxing.

【SMART SELF MODULATION】The on demand electric water heater ECO90B adjusts power input based on flow rate and temp setting in real time. As water flow reduces, power input decreases, thus you still get ideal, comfortable temp instead of scalding hot water. Optimal energy efficiency 99.8% saves considerable electricity charge per year.

【UPGRADED HEATING SYSTEM】Featuring micro-computer control and patent heating technology, ECO90B electric water heater promises no “cold water sandwiching”. And unique heating element avoids any corrosion inside pipes so as to extend service lifespan.

☼ 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.

ON/OFF Dial Control with adjustable digital temperature display

Self-modulating power control

8kW Model Flow Rate: up to 1.95 GPM

The heat tank less stainless Steel construction is a perfect fit for any applications near the ocean, like beach front properties, yachts, small boats, resorts and outdoor kitchens

Heat tank less s series can also be used in highly sterile applications like commercial kitchens, hospitals, clinics, and even schools where cleanliness is of the highest importance

Heat tank less s series saves valuable space with its compact size, the s series compared to tank Type water heaters, is small enough to fit any under counters installations, or even closets

Power setting and constant temperature function with the mini size water heater, 3 power levels(5.5KW 4.5KW 3.5KW), 10 power settings per level

Super low water pressure start-up, and microcomputer memory, anti-dry functionality, water leakage and earth leakage prevention.

Digital LCD temperature dispaly with touch control in 1-degree increments allows control of hot water

NOTE: Due to the negligence of the workers, some water heaters have no manuals, please contact customer service if necessary, and the customer service will send you an electronic version of the manual！

Since each product has been quality tested before leaving the factory, a small amount of water remains inside each water heater!

【ENDLESS WATER HEATER】3 seconds to get hot water without preheating. Instant consistent and endless hot water of the maximum temperature reach to 131 ℉. Tankless electric water heater on demand suits for sinks，Not suitable for bathing.

The 220V eco 18Kw unit requires (2) 50 amp breakers and must be installed by a professional plumber or electrician to ensure safety and quality

German-designed with high quality stainless steel water channel and heating chamber

Smart technology: easy management and simple adjustments on a LCD panel allows you to program the exact desired water temperature thereby optimizing electricity consumption

Perfect for low flow single sink applications in moderate to warm climates with inlet cold water temps above 57 degrees

For optimal heating a 0.5 GPM is required. 0.5 GPM = 45 degree temperature rise

Unit requires a dedicated 30A single phase breaker, 10 AWG wire (line, ground, neutral) and 110V service. This is NOT a plug in unit

Push-button ON/OFF control with LED temperature display

6 kW Model Flow Rate: up to 1.0 GPM

Perfect for 1 or 2 sinks

✅【Tips】 The instant hot water heater does not store water (Water Temperature Range: 35-50℃, Voltage:3000W; AC 110V;Wire Requirements:2.08mm² Copper wire (#14 awg wire); )Trip switch:≥32A(Otherwise it will trip).The outlet water temperature depends on the inlet water temperature and water flow. The larger the water flow, the lower the temperature, the smaller the water flow, the higher the temperature.

✅Quick Heating: You can heat the product without heating. Tankless water heater can keep water out of the water within 24 hours, Energy saving and environmental protection.If the tankless water heater heating water is not hot enough, please reduce the flow rate of water the temperature of the water will increase.

✅Convenient and Small: Tankless water heater can be operated by the remote control and button, and the LED screen displays the temperature in real time. Tankless water heater small and exquisite water heater saves space, installation and disassembly simple. If tankless water heater are leaking, please check whether the product interface is connected right.

The electric tankless water heater is compact and mini size, making it possible to install anywhere close to outlet and avoid energy waste. It can be mounted 360 degree, horizontally, vertically, obliquely, reversly. Ideal for kitchen, bar, school, hospital, community, hair salon and off-grid, cabins, bathing animals, remote apartment.

This 220-240V instant electric water heater request 32A Breaker, Standard Pipe Section G1/2" water connection, 12AWG copper premium power cable. (Very important: You must run this heater on 240V Voltage)

Smart Touch control and Plus Remote Control, the electric tankless water heater comes with digital display & touch control panel so temp setting is an easy job. Also with 3 meter long distance remote control, convenient and practical to use.

Durable, point-of-use hot water solution ideal for a full bathroom nationwide – Sink and Shower combination

3 settings: high 13 kW, medium 8.5 kW, low 4.5 kW

Saves up to 50% on water heating costs vs. a tank water heater

Price For: Each Includes: Compression Fittings, Faucet Flow Controls Item: Electric Tankless Water Heater Features: 99% Energy Efficient, Compact Size, Easy to Install, Low Installation Cost, Unlimited Hot Water Watts: 2400 Voltage: 120VAC Amps AC: 20 Temp. Rise @ 0.5 GPM: 33 Degrees F Temp. Rise @ 1.5 GPM: 12 Degrees F Min. Flow Activation: 0.40 gpm Temp. Range: 90 Degrees to 120 Degrees F

Water Connection: 3/8" Compression Height: 6-1/4" Standards: UL, IAMPO, HUD, ADA Depth: 2-3/4" Pressure Range: 25 to 150 psi Water Heater Design: Point-of-Use Mounting: Horizontal Temp. Rise @ 20.0 GPM: 20A Wire Size: 12 AWG Residential / Commercial: Commercial/Residential Width: 9-5/8" Water Heater Application: Undersink Phase: 1 Country of Origin (subject to change): United States

💧【INSTANT ELECTRIC WATER HEATER】No need to preheat before using the tankless water heater. Whenever you turn on the faucet, the water flows at the temperature you want. No stand-by heating loss. Microcomputer control, multi-power setting, suitable for different temperatures needed in different seasons.

💧【SAFETY】Adopt the technology of water and electricity isolation, and electric insulation walls to protect people from electric leakage damage. With multiple protection devices such as dry heating protection, leakage protection, over temperature protection, sensor trouble protection, etc

💧【SMART】The water heater comes with an LED digital display and touches control panel, freely adjustable the temperature between 86℉-131℉. And the temperature memory function can avoid repetitive work.

Warm to hot climates - serves up to 1-2 bathrooms | Cool to cold climates - serves up to 1 bathroom

Requires a 240-Volt service with two 40 Amp double-pole breakers and two 8/2 AWG wires

35° F Temperature Rise – 3.7 GPM, 45° F Temperature Rise – 2.85 GPM, 55° F Temperature Rise – 2.4 GPM

【5500W Instant Constant Temperature Tankless Water Heater】The 5500W fast constant temperature heating system is adopted. The electric water heater without water tank provides instant hot water, which can be obtained in 3 seconds without preheating. Instantly stable and endless hot water with a maximum temperature of 55 ° C/131 ° F It is the perfect companion of the sink, bringing you the perfect experience of comfort and relaxation.It is recommended to use 220v voltage for power supply, so that the water heater can reach the maximum heating power. If 110v voltage is used, the heating efficiency of the water heater may be reduced.

【360°Unrestricted Easy Install】The internal integrated cast aluminum structure allows this water heater to be installed without any restrictions. It can be installed 360 degrees in any narrow space, such as the bathroom, kitchen, and sink. In addition, the water heater with complete electrical and water flow partition can be installed either vertically or upside down, depending on your needs. Standard 1/2 connector (flow in or flow out), which can be directly connected to the household conventional hose connector.

【Safety Hydroelectric Divisional Operation Structure】The internal integrated cast aluminum heating design of this water heater completely separates the electrical and fluid systems, so as to prevent electric leakage and water pipe corrosion while greatly improving the safety. With double electric wall, dry burning prevention, overvoltage protection, grounding protection, thermostatic scald prevention, IPX4 waterproof, over temperature protection and other powerful functions, you can rest easily because you know you have safe hot water to supply on demand.

Warm to hot climates - serves up to 3-4 bathrooms | Cool to cold climates - serves up to 3 bathrooms

Requires a 240-Volt service with four 40 Amp double-pole breakers and four 8/2 AWG wires

35° F Temperature Rise – 7.3 GPM, 45° F Temperature Rise – 5.46 GPM, 55° F Temperature Rise – 4.47 GPM