The traditional water heater is an excellent and useful appliance, but it occupies more space, money and consumes more power. It’s an ideal opportunity to upgrade, mainly since the electric tankless water heater grows every day, prompting more affordable and prompting choices. They give hot water 24*7 while additionally keeping power consumption low. Also, since they are slimmer than their conventional counterparts, the best tankless water heater requires little storage space. Therefore, you don’t need to rearrange your entire house to suit them. Purchasing a decent model based on the useful electric Tankless Water Heater reviews is a beneficial investment, as tankless electric water heaters are more effective and have a longer life than the tank counterparts.

With several models on the racks, are you wondering which the best choice is? Discover what you can purchase with our electric tankless water heater reviews in this article.

Our Picks For The Best Tankless Water Heater

Stiebel Eltron Tempra Plus 24 KW

Tankless Water Heater Reviews

Stiebel started its business since 1924 and famous for its quality and well-designed products.  Stiebel Eltron Tempra Plus 24 kW is the leading tankless water heater with the tremendous water output.


Convenient design: It has an extra sleek design so we can install it anywhere. This saves space and reduces waste and is entirely quiet in its operation as it encompasses high-grade electronic parts and reliable cover which does not vibrate. It doesn’t have any mechanical switches.

 This has a strong water flow model can accommodate two bathrooms which provides water flow a maximum of 5.5 gallons per minute. When compared with other heaters it will give hot showers for a more extended period while other give until the tank end up and have to wait for next fill up.

Water flow: Stiebel Eltron Tempra Plus has advanced flow control technology which works as a backbone of this heater. It reduces the water flow as per our demand and temperature remains constant. Moreover, it is more energy efficient because it is designed with self-modulating technology. Comparably it is superior in energy saving by 15% to 20% with other heaters. So it is more durable and efficient.

Dial selector: It comes with a dial selector model which we can adjust the temperature from 86 to 140 degrees Fahrenheit.  This high-end unit is a boon for cold regions where the incoming water temperature as low as 40 degrees Fahrenheit. And it has a large display, shows temperature in digital format.

To achieve a space-saving design, it was made with lesser raw materials. And parts inside the heater are recyclable which provide lesser impact on the environment.  Hence it comes with three years of warranty.

  • Unlimited Power supply
  • sleek and compact design
  • Energy Efficient
  • Adjust sudden temperature changes
  • Automatic flow rate
  • Need professionals for installation
  • Quite Expensive

Atmor AT-D18TP-AZ Instant Tankless Water Heater

Tankless Water Heater Review

Are you looking for a medium size water heater with high quality and less tankless water heater price, then Atmor AT-D18TP-AZ is the ideal option for you.


Atmor AT-D18TP-AZ Instant Tankless Water Heater will work in moderate to a normal climate. It can heat up to 3.7 gallons of water per minute which is suitable for a single shower and eventually in the colder weather we can use only for bathroom sinks. It has smart sensor technology which gives hot water as per the demand, and at the moment you turn off the tap it stop its heating process. It is highly energy efficient and can reduce your electricity bill by 50%.

It has self-modulating technology which controls the water flow rate and optimizes energy. Another important feature of this heater was its user-friendliness and easy to use. It’s doesn’t have any critical design, and it comes with a simple knob under digital thermostat so you can operate without fear.

It is also credited with IP54 certification which defines it was safe against splashes. It promises in terms of better lifespan and gives seven years of warranty for leakage and two years for its parts. Additionally, it has a sleek design which was easy to install at 240volts. The manufacturer assures that it won’t cause any unnecessary problems until it undergoes proper maintenance.

  • High Quality
  • IP54 Certification
  • User-friendly
  • Smart sensor technology
  • reduce 50% electricity bill
  • Strong warranty services
  • Easy to install
  • Reasonable price
  • Not ideal for large households
  • Doesn’t provide the same flow rate in colder climates.

Rheem RTEX 13 Electric Tankless Water Heater

Residential Tankless Water Heater

After the Rheem RTE 13, the RTEX 13 models Rheem RTEX 13 Electric Tankless Water Heater is becoming popular every day. Though it has been newly launched, its reliable and user-friendly performance is already winning the hearts.

The Most Notable Feature Of This Heater Is:

Water flow: A four Gallons Per Minute(GPM) flow: This feature of the heater lets people run hot water on the bathroom and kitchen tap simultaneously. The heater comes with notable water flow, and at the same time, it is very compact to fit in any space.

Flexible size: The top-rated water heater from Rheem comes with an electric power source because a propane water heater cannot fit in confined spaces. Hence, this water heater fits in any space irrespective of its size, ventilation, gas pipes, etc.

  • Suitable for small houses with confined space
  • Offers hot water to one shower and one low-rated tap
  • Very Compact
  • Comes with digital thermostat
  • Very Affordable
  • Not ideal for the large family

Stiebel Eltron Tempra 29 Plus Water Heater

Best Tankless Water Heaters

The Stiebel Eltron Tempra 29 Plus is one of the most efficient tankless water heaters with a high-end unit. If you are looking for an excellent model which has a high flow rate that can hit up to 8 gallons per minute, then Eltron Tempra 29 is a right pick for you. Due to its high efficiency, it is highly suitable for the colder regions where the temperature drops up to 40 degrees Fahrenheit.


Automatically adjusts the flow: One of its most notable features is, it automatically adjusts the flow of water when there is a higher demand than the water heater can handle.

Thermostatic Temperature Control: Not all the water heater comes with the Thermostatic Temperature Control, it is one of the few models that possess temperature control feature. Hence, based on the water flow rate and water temperature it adjusts the power to match with the heating requirement of the incoming water. So when the water runs through the shower, you can enjoy the appropriate water temperature.

Digital Display: The top-rated water heater model comes with a digital display where the temperature is displayed in an easy-to-read digital format. Additionally, it also has a responsive dial selector using which you can set the required temperature between 86 to 140 degrees Fahrenheit.

  • No temperature fluctuations irrespective of the water flow rate
  • Undeviated temperature set point as it has a temperature sensor
  • Simple to operate
  • Highly responsive and adjustable for the sudden temperature changes
  • The clause in the warranty is not satisfied

Bosch WH27 Tronic Tankless Water Heater

Best Tankless Water Heater to buy in 2019

Customary tank water heaters lose, about 20% of their heat up through the sidewalls, and to keep stored water hot, and they should ceaselessly cycle on and off, regardless of whether you are utilizing high temp water or not, making them expensive just as inefficient. The Bosch Tronic 5000 C or 6000 C House Tankless Water Heater could be the ideal solution for this problem, which heats water promptly when you need it. These warmers are amazing for small residences where a standard heater would occupy an excessive amount of room and utilize a lot of electricity.

Bosch is one of the reputed home appliances manufactures. With excellent German technology, they can produce appliances with high standards. Bosch WH27 Tronic tankless water heater is one among it that is highly compatible and reliable with 3.3 GPM at a 55 degrees Fahrenheit temperature rise. Bosch guarantees a 97% effectiveness rating with an improved scale resistance and negligible standby loss, and it delivers a continuous water supply for one major application at a time.

  • Fit easily at any place.
  • Suitable for both residential and commercial.
  • Comes with element modulating control unit that offers a steady output temperature
  • Water gets heated quickly and efficiently.
  • It is a space saver and lightweight appliance
  • Though the tankless water heater price is less expensive but the repair cost seems to be more expensive when compared with other electric tankless water heater.

Titan SCR2 N-120 Tankless Water Heater

Top Tankless Water Heater 2019

Titan SCR2 N-120 is a small tankless water heater. However, it cannot be underrated with its size. It has the maximum power among its SCR2 counterpart, yet it has an energy rating of 99.5% that will enable you to save extra cash in the long run. It’s adaptable and useful for homes with up to 3 restrooms as it has a maximum water flow of 4.0 GPM at a 20 degrees Fahrenheit temperature. It comes with a push button for setting the desired temperature, which the water heater shows as a low-to-high chart.

The Titan SCR2 N-120 is perfect for homes in hotter climates, primarily because of its prerequisite of incoming water in 65 degrees F temperature. One more notable benefit is, it has a 10-year guarantee on water-carrying units. It additionally looks excellent and will complement your home with its slim design.

  • User-Friendly Installation
  • Cost effective and very compatible when compared with other water heaters
  • Maximum GPM
  • Long warranty period
  • Adjusts the flow rate as per the input and output water temperatures.
  • It is not suitable in a colder climate as it has a high inlet water temperature requirement
  • The starting high temperature is 105 F.

Ecosmart ECO 27 Tankless Water Heater

Best Tankless Water Heater 2019

Are you looking for a budget-friendly water heater with higher efficiency? Then Ecosmart ECO 27 is the better option for you.

Here Are Some Of Its Attractive Features:

Ecosmart ECO 27 is an energy efficient model which acquires top rank in the Tankless Water Heater list. It is the one which provides better value for money. This was designed with self-modulating technology, which saves energy by adjusting the amount of power based on the level of water we used and the temperature we fix. Thus it provides higher energy and higher temperature.

It has copper and silver as their heater components. Combination of these components makes this heater as more durable and long lasting. Ecosmart works efficiently even below 37*F. In a colder climate it gives 3.0 GPM flow rate, in a regular and warm atmosphere it can deliver up to 6.0 GPM or more. Thus it is suitable for both cold and warmer climates.

It’s capable of delivering 2 showers at a time, although in warm climate additionally, it can provide hot water for four showers and sink. Therefore it can run multiple applications simultaneously for busy households.

To attain more space, it was designed as sleek and stylish that it can fit into any place and it has a digital interface where we can change the exact temperature as per our need. It ensures saving 98% of energy and reduces your electricity bill by 50%. It needs 240 volts for installation and thermal auto protection to avoid overloading and overheating.

  • Compact design
  • High heater efficiency
  • Easy to install
  • Easy replacement
  • More durable
  • Saves 50 % of electricity
  • Multitasking
  • Adjust the temperature by 1*F increments.
  • The complication in achieving lifetime warranty clause
  • Ideal for small households

SioGreen IR260 Tankless Water Heater

Electric Tankless Water Heater

If you are seeking for a water heater that is cost efficient and energy efficient, then SioGreen IR260 is for you which have great functionality.

Here Are Some Of Its Attractive Features:

SioGreen is suitable for smaller households. SIO Green includes an infrared heating design which gives hot water instantly. Thus we can get hot water at any time we need. It comprises metallic quartz heating elements in its product which is highly non-corrodible. It heats water by not including in direct contact with the metallic elements. This avoids the accumulation of scale and calcium. Thus it saves the maintenance cost.

Sio Green was designed with an extra sleek model which fit into any space in your home. It uses liquid flow regulator that assures the water is heated only when you need which saves your electricity bill. Additionally, a water flow regulator is integrated into this heater which guarantees that the temperature can be adjusted manually. The installation process is quick and more comfortable. They include a detailed process of installation.

The manufacturer ensures 100% refund when you are not satisfied with the water heater within 30 days after installing the device. They will replace another device or return the entire amount we spend.

  • Easy installation
  • Zero maintenance cost
  • Portable design
  • Flexible
  • Quick Refund
  • Instant hot water
  • NO limescale accumulation
  • Installation cost
  • Perfect for small households

Rinnai RUC98iN Natural Gas Tankless Water Heater

Best Tankless Water Heater Amazon

The Rinnai RUC98iN water heater is one of the best seller gas tankless water heaters available. Its capacity to heat water is remarkable, making it a decent choice for busy places and big families with loads of need for hot water. While expensive, this unit has a stream rate of 7.5 gallons to legitimize its expensive price tag. With such a limit, it will effectively give a steady supply of water for two to three bathrooms.

Here Are Some Of Its Attractive Features:

Temperature Lock System: When you’ve set the temperature, you don’t need to worry about its temperature setting as it will remain the same due to its innovative feature. This checks the point that the RUC98iN is an incredible water heater for either commercial and residential use or any other spot where it’s at risk of being controlled. For the individuals who might need to know, this unit has the most extreme temperature setting of 160 degrees Fahrenheit.

Programmed Scale Detection: One reason your tankless water warmer is probably going to fall flat is if there are bunches of scale accumulation. The scale is a papery and white substance that appends to pipes. The RUC98iN recognizes territories with scale stores automatically, which by expansion, helps increase its durability.

Stellar Energy Efficiency:The unit RUC98iN is an Energy Star Certified water heater and is highly energy efficient. Especially, when functioning on propane or natural gas with .82 gallon energy factor.

Other than that, it accompanies smart chips to forestall short-circuiting to keep you and your family protected. Furthermore, this water heater offers two alternatives, and you can either mount it horizontally or vertically according to your inclination preferences.

  • Digital temperature controllers
  • Up to 0.96 Energy Factor/Up to 0.92 Uniform Energy Factor
  • Space saving design
  • Concentric or PVC venting options
  • Installs in a cinch
  • Cost wise it is quite expensive

What To Look For A Best Tankless Water Heater?

1. Size

In general, the tankless water heaters have impacts in its water delivery rate. For instance, if a whole family needs hot water then, you need a bigger unit to the people’s demand. A small water heater may work for a single bathroom, but they can also be an excellent replacement for the traditional water heater.  Tankless water heaters can give a fixed measure of heating dependent on the water temperature flowing through them. Hence, if you are a person living in a colder place, then you might need to opt for a bigger model with a higher stream rate to create a similar measure of hot water in the cold climate.

2. Energy efficiency

Tankless water heaters utilize less power consumption than regular water heaters. However, a few models are more productive than others. If you are a person concerned more about improvising the energy efficiency, opt for one that is Energy Star qualified.

3. Power Source

In general, Tankless water heaters make use of one of the three power sources – Electricity, Natural gas, and propane. At times, the type of heaters you purchase is directed by the power source accessible in your home, so you don’t need to be concerned about this matter in the future. However, it’s great to determine your choices if you have access to more than one power source.

You can anticipate that electric tankless water heater should have less operating costs yet it is still expensive to purchase. Propane models and tankless gas water heater costs and have somewhat higher operating costs. One advantage with gas models is it likewise work in the absence of electricity.

4. Installation 

The establishment of tankless water heater is very simple, yet it has unique prerequisite on pipe, lines and pressure. On the off chance that you have to supplant a tank water warmer with another tankless  one, you may change the whole wire framework in the event that it isn’t good with the previous one. For expert installation, you need additionally pay large amount of cash.

Is it accurate to say that you are stressed that there is no much space at home? At that point you can pick an outdoor type. It can be installed out door and in this way needs no venting facilities. However, make sure to get an protection for keeping it safe from outside weather.

Takeaway For Tankless Water Heater

A tankless water heater occupies a special place in the present era. With the world moving to green and energy saving, it is practically difficult to envision that tankless water heater will become out of date. The best part is the way that these units heat the water moderately quick as well as do as such without utilizing more electricity which implies more cash in your pocket. The point that we are endeavoring to make in this tankless water heater reviews 2019 is that when you’re in an ideal situation to get a water heater, opt for a tankless water heater at any point. Because who doesn’t like to save a few amounts on electricity!