Best Electric Tankless Water Heater: The new types of electric tankless water heaters provide an energy-efficient and easy to install solution for your home or business. Designed for both whole-house water heating and specialized applications, electric tankless water heaters to meet your specific requirements.
The best tankless water heater saves space and provides greater energy efficiency than many traditional water heaters. On top of that, this type of water heater never runs out of water because there’s no storage tank to deplete! Instead, you’ll enjoy warm water demand for as long as you’d like, as long as you’re working within its limits.
Shop for an electric tankless water heater that matches your requirements in gallons per minute (GPM) of warm water. Consider peak activity times and determine how many water connections might be simultaneous, such as showers, washing machines, sinks, and dishwashers. Add up each fixture’s GPM flow rate to determine peak water usage needs and try to find the best electric tankless water heater to match.
What to Consider Before Buying the Best Electric Tankless Water Heater?
I have used the following criteria to select the best electric tankless water heater.
- Budget: We know the best quality is always for the best budget. Since the best products are built with quality and expensive components.
- Fuel Type: Tankless heaters are fueled by gas or electricity. You need to make your selection between them. We are not likely to indulge in an electric vs gas tankless water heater discussion, but we are going to clean up things.
- Flow Rates: Water heaters have flow evaluations that tell just how much water Will flow from your taps at once. It’s an important matter to consider.
- Size: Tankless water heaters do not require storage tanks, so they tend to be pretty small and lightweight. Although, this can vary from model to model. So, check out which size works out to you the best and go with that one. If you’re thinking about capacity, you should consider the flow rates rather.
- Heating Speed: How much gallons per minute (GPM) of warm water can produce selected electric tankless water heater, should also be considered while selecting your best electric tankless water heater.
- Durable body: You can select your indoor electric tankless water heater constructed of steel and has a durable structure.
- Ease of Use: It would be best if you prefer buying a tankless water heater that’s super easy to use. It should come complete with advanced and smart features which make it user-friendly and convenient.
- Warranty: Some durable electric tankless water heater are offered three years of limited warranty for the framework. You can take it into your considerations as well.
- Installation costs: It is best to install electric tankless water heaters at the origin of water or across the pipping in your house or office. Since these goods lack any storage capacities, the heating power distribution has to be close to pipes. You need to check if your home requires significant modifications to adapt to a tankless heater.
- Energy savings and efficiency: Electric tankless water heaters promise significant savings when compared to using a hot water Storage tank. When required, heating water helps decrease the energy used to keep it warm in a separate tank.
Our List of Top 10 Best Electric Tankless Water Heater
It can be challenging to look through the several options available when looking for the best electric tankless water heater. We’ve compiled ten products that will assist you make the most practical purchase for your office or home.
- EcoSmart ECO 18 Tankless Electric Water Heater
- Ecosmart ECO 11 Electric Tankless Water Heater
- Sio Green IR260 POU Infrared Electric Tankless Water Heater
- Stiebel Eltron Tempra 36 Plus Electric Tankless Water Heater
- Rheem RTEX-13 Electric Tankless Water Heater
- Bosch Tronic 6000 WH27 Electric Tankless Water Heater
- Titan SCR2 N-120 Electric Tankless Water Heater
- Bosch Tronic 3000 Electric Tankless Water Heater
- Eemax EEM24013 Electric Tankless Water Heater
- Rinkmo Electric Tankless Water Heater

Ecosmart ECO36
(Editor’s Pick)
- Power Rating (kW): 36
- Dimensions (inches): 17 x 19 x 3.8
- Weight (lbs): 18.35

- Power Rating (kW): 26.85
- Weight: 19.5 lbs
- Dimensions (inches): 15.5 x 4.5 x 12.5

Rheem RTEX-13
(Editor’s Pick)
- Power Rating (kW): 13
- Weight: 8.5 lbs
- Dimensions (inches): 12.6 x 8.2 x 3.6

- Power Rating (kW): 36
- Weight: 18.9 lbs
- Dimensions (inches): 4.6 x 16.6 x 14.5

- Power Rating (kW): 6
- Weight: 5.1 lbs
- Dimensions (inches): 14.3 x 12.8 x 4.4
1. Titan SCR2 N-120 Electric Tankless Water Heater

Key Points
- Voltage (V): 220
- Power Rating (kW): 11.8
- Amperage Capacity: 54A
- Required Breaker: 1×60A
- Weight: 7.5 lbs
- Dimensions (inches): 12 x 10 x 5
- Water Connections: 3/4″ NPT
- Warranty: 5 Years
The water heater manufacturers at Titan have outdone themselves yet again using the Titan SCR2 N-120. Constructed in cooperation with Niagara Industries, the N-120 is a speedy 220-volt electric and 100% water heater built to provide your house or office with an abundance of warm water at a minimal cost.
At just eight pounds in weight, virtually no wall or surface, the N-120 cannot be installed. Consequently, there is no excuse not to install the N-120 in your office or household since it’s tailored for all environments. Plus, its tan metal finish adds some personal flair to an otherwise classic design which blends in well whatever the room’s style.
We propose trusting the experts at Titan to provide you with 50-60 Hz or 11.8 kW of scorching-hot water flow for a continuous hot water source. On top of that, this heater will heat your water supply when you require it so that you don’t need to worry about wasting energy by unnecessary heating.
Pros
- Despite its compact form factor, the Titan can pump out 4.0 GPM
- Excellent manufacturer’s warranty provides comprehensive coverage
- More affordable than other brands, and easy to install
- Has a great energy efficiency rating of 99.5%
- It looks great when planted on the wall
Cons
- It requires an inlet water temperature of 65 degrees Fahrenheit
- Not a great choice for cold-weather climates
- Water temperature starts high at 105 degrees Fahrenheit
2. Bosch Tronic 6000 WH27 Electric Tankless Water Heater

Key Points
- Voltage (V): 240
- Power Rating (kW): 26.85
- Amperage Capacity: 3×40 (120)A
- Required Breaker: 2×60A
- Weight: 19.5 lbs
- Dimensions (inches): 15.5 x 4.5 x 12.5
- Water Connections: 3/4″ NPT
- Warranty: 5 years heating module and 2 years parts
The Bosch Tronic 6000 is one of two lower capacity electric tankless water heaters on our listing, but it does not mean it’s brief on performance. Bosch produces two units in the Tronic 6000. The WH 17 has a kilowatt rating of 17.3, along with the WH 27, with a kilowatt evaluation of 26.9.
The WH 27 is the perfect tankless water heater to replace a 40-gallon electric tank-style water heater that will assist you in reducing your energy bills. With suitable copper heat exchangers, this particular unit has been built to survive, and the company stands behind their product with a 5-year heating module limited guarantee.
Designed as a whole house tankless, the WH 27 can readily be used to give an increase to your central heating system. Simply place it near a bathroom or other origin, and it’ll kick in quickly to fill the gap before your primary hot water heating system is prepared to take over.
Pros
- Features a compact and lightweight design
- Patented element modulating control unit technology self-regulates temperature
- Suitable for household or commercial applications
- Operates quietly and with low power consumption required
- Requires no venting or external air flow
Cons
- Requires a 240-volt breaker outlet
- Often results in a slight delay of 20-40 seconds
- Costly to repair
- Not as affordable as rival electric hot water systems
3. Rheem RTEX-13 Electric Tankless Water Heater

Key Points
- Voltage (V): 240
- Power Rating (kW): 13
- Amperage Capacity: 54A
- Required Breaker: 1×60A
- Weight: 8.5 lbs
- Dimensions (inches): 12.63 x 8.25 x 3.63
- Water Connections: 1/2″ NPT
- Warranty: 5 Years
The Rheem RTEX-13 240V Residential Tankless Water Heater gets the right balance of affordability and utility. The tankless model boasts an impressive energy evaluation that is 99.8% efficient. It achieves this standard by using its external temperature controller feature for incremental alterations of one degree Fahrenheit into the warm water temperature.
Installing the product is quick and simple Because of the tools that come with the packaging. You get a three-foot cable together with NPT adapters that ensure you are done in no time. The port makes adjusting the temperature gauges for the hot water easy.
Rheem RTEX-13 will provide you with a flow rate of 3.17 GPM, which is sufficient to guarantee a constant supply of warm water To your residence. It’s a heating room with immersed copper heating Components. This construct ensures high durability for many years of superb service.
Pros
- Affordable.
- Highly energy efficient.
- The unit GPM ratings are comparable to natural gas-powered water heaters.
- Sleek design to save space in your home or office.
- This unit is ideal for residential house use where the demand for hot water is high.
Cons
- Frigid climates negatively affect the performance of the electric water heater.
- It might get overwhelmed when the demand far exceeds the hot water supply.
4. Stiebel Eltron Tempra 36 Plus Electric Tankless Water Heater

Key Points
- Voltage (V): 240
- Power Rating (kW): 36
- Amperage Capacity: 150A
- Required Breaker: 3×50ADP
- Weight: 18.9 lbs
- Dimensions (inches): 4.63 x 16.63 x 14.5
- Water Connections: 3/4″ NPT
- Warranty: 7 Years leakage and 3 years parts
Powered by 150A of electricity, the Stiebel Eltron Tempra Plus is one of the top water heaters for people who have moved away from tank-type heating methods. If you want the best electric tankless water heater on the current market, the Tempra Plus is one of the few options that stand out from the remainder.
By simply switching to a Tempra Plus, You can save between 15 and 20% away from the water portion of your electric bill. Plus, its easy setup purpose makes the Tempra a breeze to install and have functional. Requiring electrical service for around 300A at peak hours, the Tempera Plus makes the smallest energy source provides you with plenty of warm water.
The Digital Temperature controller ensures that even the slightest alterations in temperatures are registered from the heat sensors in this furnace. In other words, the heater’s internal sensors can measure small changes in heating levels to make sure to receive perfectly heated water every time.
Competing even gas-powered heating components, this system can stream almost five GPM to supply a copious number of warm water to all household faucets in an efficient method. Irrespective of your household size and water requirements, this heater is an excellent choice since it is more than capable of satisfying whatever requirements you throw at it.
Pros
- Equipped with sturdy copper heating element for durability
- Boasts a small and compact design
- Offers continuous flow of hot water 24/7
- Saves tons of energy aided by the self-modulating technology
Cons
- Pure performance metrics lag behind some competitor models
- Does not perform very well in frigid climates
5. Sio Green IR260 POU Infrared Electric Tankless Water Heater

Key Points
- Voltage (V): 220
- Power Rating (kW): 6
- Amperage Capacity: 25A
- Required Breaker: 1×30AMPS
- Weight: 5.1 lbs
- Dimensions (inches): 14.29 x 12.8 x 4.41
- Water Connections: 1/2″ NPS (NPT adapters included)
- Warranty: 2 years (Require Register within 30days)
Here is the most modern technology, a high-tech infrared tankless water heater. However, now, the Sio Green IR260 POU is taking the market by storm for boasting those features while saving customers money every month on their gas and electric bills. With models ranging from 30A and 3.4kW up to 80A and 18kW, you can rest assured knowing that there is a water heater available that perfectly matches your household requirements.
Using a no-coil and no-metal design, you never need to worry about maintenance or corrosion when dealing with this machine. Instead, you install it in minutes of purchase and celebrate in your monthly cash savings.
At less than 20 inches in length, this device boasts an impressively compact form element. In our experience, we could install this system virtually everywhere in our home with ease, from small kitchen closets to underneath the bathroom sink. If you need a budget-friendly, space-saving water heater solution, you cannot go wrong with the IR260 POU.
Pros
- 100% Satisfaction Guarantee or your money back
- Requires only 30A to produce up to 6.0kW or heating power
- The device pays for itself in less than two years
- It only heats water as you use it
- Infrared heating eliminates the need for quartz-based parts
Cons
- Its small size does not lend itself well to large multi-unit households
- Low 1.5 GPM flow rate can result in a limited hot water supply during high demand
6. Ecosmart ECO 11 Electric Tankless Water Heater

Key Points
- Power Rating (kW): 13
- Voltage (V): 240
- Dimensions (inches): 11.5 x 8 x 3.75
- Weight: 6.5 lbs
- Water Connections: 1/2″ CF
- Required Breaker: 1×60AMPS
- Amperage Capacity: 57A
- Warranty: Lifetime Warranty on electronics, exchanger and element
EcoSmart ECO 11 Tankless Water Heater is a unique unit made to make life more pleasurable during the chilly winter seasons. You’ll have a trusted water heating solution that gives you an endless supply of hot water while keeping the bills down if you want it! With a slim design that’s lightweight enough to be mounted on your wall. It will not take up much distance as a storage-tank water heater.
After a simple installation, it will always be prepared with heated water, which means you’ll never need to spend any time heating water. That is because the heating method is remarkably smooth!
Featuring an effective self-modulating technology, this tankless unit Doesn’t utilize any surplus energy but just the amount required for water heating on demand. Furthermore, it remains energy-saving when it is not needed and uses energy when you need it.
This model offers a digital temperature controller, allowing you to select between 80 to 140-degree Fahrenheit. It will provide you peace of mind knowing that warm water is constantly available for you!
Pros
- Capable of saving up to 50% electric cost
- Comes with a space-saving design
- Easy to set up and use
- Easy control over the water temperature
Cons
- Only suitable for low-flow applications
7. Bosch Tronic 3000 2R Electric Tankless Water Heater

Key Points
- Power Rating (kW): 3.6
- Voltage (V): 120
- Dimensions (inches): 12.8 x 6.6 x 2.9
- Weight: 8.8 lbs
- Max Flow Rate: 0.5to 1.5 GPM
- Required Breaker: 1×40AMPS
- Amperage Capacity: 30A
- Warranty: 5 Y for copper heat exchanger and 2 Y for other parts
Upgrade your commercial or residential water heating system together with the Bosch US3-2R Tronic 3000 Electric Tankless Water Heater. This 3.6 kW under-sink tankless water heater is designed to offer an infinite supply of instant hot water to more than one sink.
This electric water heater can be installed in a 360-degree orientation so that you can position the device in tight under-counter spaces to get a flexible, worry-free installation. The ultra-compact and lightweight unit runs in 98% thermal efficiency, so the stand-by loss is minimal.
Bosch Tronic 3000 awards numerous benefits over prior models, such as a very low activation stage of 0.3 GPM. Thus, the product is ideal for use with taps that are designed to keep water.
This device is small and works nicely as a complement for a proven hot water system. For Example, you can use it to provide multiple sinks in a restaurant or house. Additionally, the installation process is simple and can accommodate many different orientations and positions to ensure it matches anywhere.
Additionally, it includes a 5-year limited warranty on the copper heat exchanger and 2-years limited warranty for all other components so that you know your purchase is protected.
Pros
- It does not require temperature or pressure relief.
- 98% efficient
- The unit is compact and lightweight
- The model is made of copper materials that increase its life-span.
- It has a copper heat exchanger, and the heating elements have copper sheathing.
- Low activation standard of 0.3 GPM.
- Less or no maintenance required.
- Very affordable.
Cons
- It is not ideal for big family
- Its parts have different warranty timelines.
8. Eemax EEM24013 Electric Tankless Water Heater

Key Points
- Power Rating (kW): 13
- Dimensions (inches): 11.5”H x 8”W x 3.75”D
- Weight: 7 lbs
- Max Flow Rate: 4.8 GPM @ 60psi
- Required Breaker: 1×60 AMPS
- Amperage Capacity: 54A
- Warranty: 5 years for leaks and 1 year for parts
Saving energy is one of the most significant driving forces for people seeking to switch from a tank system to a tankless electric alternative. The Eemax EEM240013 model is an affordable unit that provides continuous hot water when you need it.
You can rely on the Self-modulating feature of the product to lower your power consumption.
The device uses stainless steel materials to make sure that it can keep serving users for a long time to come. Additionally, it is small in size to save you precious storage space.
Pros
- Reliable customer support
- Instantaneous and constant supply of hot water
- Self-modulating
- Small to save space
Cons
- Expensive
- You need to have a 60AMP breaker to use the unit
9. Rinkmo 24 KV Electric Tankless Water Heater

Key Points
- Power Rating (kW): 24
- Dimensions (inches): 13 x 17 x 3
- Weight: 20 lbs
- Pipe Fittings: 3/4 inch NPT
- Required Breaker: 3x30A
- Amperage Capacity: 3x29A
- Product Origin: United States
Rinkmo has developed a brand new line of more efficient electric tankless water heaters in 3 years, with an improved layout and state-of-the-art technologies.
The 5th generation of efficient and instantaneous electric tankless water heaters is safe, efficient, and cost-effective never before available. Radically solve the issues.
Rinkmo water heater just like a little bag, save your space and giving more to a living room. Simple to install and operation, place temp by turning the button, press the button to switch between Fahrenheit/ Celsius.
Rinkmo instant electric tankless water heater turns on if you want hot water, reduces the store heat loss, saving up to 50% in water heating costs, and you’ll be able to find the freshwater.
Solve most of the safe problem and high maintenance costs, more cost-effective under our Original Water Pipe and Electricity Heating Separate tech: 304 stainless steel water pipe, healthy. No mineral buildup, no need to clean it. No dirty water. You don’t need to ask a plumber to repairing machine multiple times. Real savings for your future cost, time and money.
Rinkmo Electric Tankless Water Heater not only for home use, but for many other industrial areas where need instant, endless and safe hot water, for example: apartment, barbershop, resort, beauty salon, gym facility, restaurant and so forth.
Pros
- You can save up to 60% of space compared to tank-type systems
- It can read temperature adjustments of under one-degree Fahrenheit
- Quick installation process
- Copper and stainless steel structure lead to greater energy efficiency
- Bright LED indicator lights make the Rinkmo 24KV simple to use
Cons
- The warranty clauses are complicated
- There are some reports of water leaking and dripping on the floor
10. EcoSmart ECO 36 Tankless Electric Water Heater

Key Points
- Power Rating (kW): 36
- Dimensions (inches): 3.6 x 21 x 17
- Weight: 18.35 lbs
- Pipe Fittings: 3/4 inch NPT
- Required Breaker: 4 x 40 A
- Amperage Capacity: 150 Amps
- Product Origin: United States
The all-new Ecosmart ECO36 is arguably the most energy-efficient Water heater in the market. Utilizing patented technologies, this Ecosmart model can slice your heating bills in half due to the supreme cost-cutting abilities.
Featuring self-modulating fever control mechanics, this water heater may detect temperature fluctuations of less than even one degree Fahrenheit.
In our experience, the Ecosmart ECO36 is just one of the best electric tankless water heater versions if your main priority is saving money and saving space on your house. With an astonishing 0.3 gallons per minute (GPM) activation flow, this heater unit can easily replace all household heating tanks at a fraction of the price tag.
Overall, a 6 GPM tankless system design Supplies an endless supply of warm water at the ease of your fingertips.
Additionally, the advised breaker usage is four by 40 amps, proving that it runs to a low source of power.
This Tankless water heater is up to 90% smaller than the industry standard water heater, making it the best addition to a small apartment or starter home. Based on our experience testing this version, you’ll be enjoying this electric heater system for many years to come.
If it comes to water heating and cooling, no product is perfect. Regrettably, every product is plagued with its share of drawbacks and design defects and also the Ecosmart ECO36 is no exception.
But, The question, in this case, is whether the benefits outweigh the Setbacks, and we believe the verdict comes out in the ECO36’s favour for those shoppers who put a premium on size and compactness.
Pros
- You can save up to 90% of space compared to tank-type systems
- It can read temperature adjustments of under one-degree Fahrenheit
- Quick installation process makes for easy setup
- Copper and stainless steel components lead to greater energy efficiency
- Bright LED indicator lights make the ECO36 simple to use
Cons
- The warranty clauses are complicated and can become annulled
- There are some reports of water leaking and dripping on the floor
How Do Electric Tankless Water Heaters Work?
Electric tankless water heaters are rapidly growing in popularity, given their possible energy savings and ability to deliver hot water on demand. Electric tankless water heaters help reduce your house’s energy consumption by not having to warm water in storage tanks that go unused.
Electric tankless water heaters perform with higher efficiency ratings and groundbreaking designs. They serve a wide selection of applications if it is point-of-use or whole-house. Electric tankless water heaters deliver continuous hot water if you want it, and they can be easily installed in areas where tank water heaters can not go, such as closets and baths.
Electric tankless water heaters are heating your house’s water on demand. When a hot water tap is turned on, water out of your pipes enters the water heater and passes through the heat exchanger. Within the heat exchanger, an electrical resistance coil warms the water to the desired temperature as it travels through. When sized suitably, a constant supply of warm water is delivered into a home with ease.
CONCLUSION
Finally, A tiny and reputable heater will supply you with loads of price savings every month–so shop around and start saving money and space today.
Most producers offer customer support that will help you in choosing the correct size. House to determine which model will provide for all your needs. Taking the time to understand the various aspects of electric tankless water heaters will help save you money and time in the long term.
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