Top 9 Best Electric Tankless Water Heater 2023 – Reviews & Buyer’s Guide

Do you want to save your gas bills by buying the best electric tankless water heater? Are you looking for an electric water heater with the most features and a reasonable price?

Do you want to enjoy an instant hot shower and don’t wanna waste your time on the gas heater to heat the water for you? If the answer to all these questions is Yes.

Then congrats my friend, you have found the right place to choose a portable electric water heater for your house.

They can provide hot water instantly, so you don’t have to wait and waste your time on the water which you do in the case of the gas heaters. Keeping the absolute need for the best electric water heaters in mind, we have compiled a list of the top 9 electric tankless water heaters for you so that you can find the best one depending on your needs.

These best tankless electric water heaters are extracted by performance, budget, heating ability, and user reviews. So, without further ado, let’s discuss the top-rated electric tankless water heater to buy in 2023.

Top-Rated Electric Tankless Water Heater 2023

Electric Tankless Water Heater	Weight	Voltage
Ecosmart ECO 36	17.4 Pounds	240V
Stiebel Eltron Tempra 29 Plus	19 Pounds	240 V
Ecosmart ECO 27	13.45 Pounds	240 V
Rheem RTE 13	7.35 Pounds	240 V
SioGreen IR30	7 Pounds	240 V
Ecosmart ECO POU 3.5	4 Pounds	120 V
Rheem RTEX-13	4 pounds	240 V
Stiebel Eltron Tempra 24 Plus	16 Pounds	240 V
SioGreen SIO18	29 Pounds	220 V

Best Electric Tankless Water Heater 2023 Reviews

Here we talked about the ten products of the best tankless electric water heater, we took these best tankless electric water heaters after reviewing the 27 Products and chose the best ones for you.

Ecosmart ECO 36 – Best Electric Water Heater 2023

Ecosmart ECO 36 tops the list of the best electric water heater and why would it not? This tankless hot water heater has got all those specs and features making it at the top of the list. The Ecosmart ECO 36 is the best water heater that provides instant heated water and helps you to save your gas and electricity bills with its advanced technologies.

Ecosmart is a private-based company located in Miami, Florida. This company is famous for producing eco-friendly and less energy-consuming products. This company has contributed a lot to keeping the environment healthy and saving energy.  The company is specialized in making the best tankless water heater electric, pool heaters, and spa heaters.

Did you know that heating the water adds about 25 percent of the energy bills in an average US household? That’s the main reason Ecosmart is working hard in making the best electric water heater that consumes less electricity and makes your bills balanced.

At places where the weather is moderate or hot, this on-demand water heater can do wonders for you. At 67°F, this water heater can provide 6.5 GPM of water which is more than enough for daily hot water use. This water heater can meet all your requirements even if you have higher hot water needs than average.

You can save up to 50% of your bills by installing Ecosmart ECO 36 in your house. The Self-modulating technology is introduced in this tankless water heater which makes it easier for you to control the hot water needs on the heater. Last but not least, this best tankless electric water heater requires very little space as compared to the other typical gas heaters.

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Why Should You Buy This Heater?

Stiebel Eltron Tempra 29 Plus – Best Budget Electric Water Heater 2023

Stiebel Eltron Tempra 29 plus is also one of the best electric water heaters out there on the market. The company Stiebel Eltron is very well known for making water heating products and all products are eco-friendly and energy-saving as well.

Tempra 29 plus is one of the perfect models introduced by this company and beats many electric water heaters in engineering, construction, specs, and features. The Tempra 29 plus is a bit expensive as compared to the other tankless water heaters on our list but with the features, specs, and high-quality construction, you will want to install it in your house.

This tankless water heater can prove the worth of the money you spend on it with its unusual features. The electric water heater works perfectly in both cold and hot temperatures. However, you must bear the fact that the colder the temperature of the water, the lower will be the flow rate of the water.

For example, at 40° F, this best tankless water heater can provide up to 3.0 GPM of water. This amount of water is enough for two instant hot showers respectively. However, at a temperature of about 75°F this water heater can provide 6.5 GPM water which is exceptional and more than enough for all day long.

You can efficiently use instant hot water even if its requirement is more than average. The best electric tankless heater also comes up with a digital temperature control display that can be set on different terms regarding your needs. You can set the temperature level to 86°F to 140F respectively.

Tempra 29 plus can detect the temperature of the water, and it can also calculate the amount of energy required to heat the water. You can easily save  15 to 20% on energy bills by installing this best electric heater.

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Why Should You Buy This Heater?

Ecosmart ECO 27 – Best Electric Tankless Hot Water Heater 2023

Ecosmart ECO 27 is a down version of ECO 36 which comes at a reasonable price with limited specs and features as compared to its new version, but still, it is one of the best tankless water heaters out there on the market. This instant hot water heater can add convenience to your life by providing instant hot water when needed and can cut your energy bills to almost half in this regard.

This electric tankless hot water heater comes up with self-modulating technology that helps to keep track of and control the cold water temperature. Digital temperature control is also available which allows you to control the hot water according to your needs. The bathroom heater can save a lot on your energy bills as it is eco-friendly and has energy savings.

This Ecosmart tankless water heater works quite exceptional in warm or moderate temperatures such as on the southern sides of the US. At 70°F, it provides 6.0GPM water which allows you to use the hot water without any worries.

You can run four showers with a sink efficiently and can never run out of hot water with this electric heater. The energy consumption is very less in ECO 27 as these kinds of electric heaters are made solely for energy-saving purposes.

You can save up to 50% of your energy bills by installing this instant water heater in your house. It also acquires very little space and is 90% smaller than the conventional gas heaters. All these specs at a very affordable price make this the best hot water heater, one of the best mid-budget tankless water heaters out there on the market.

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Why Should You Buy This Heater?

Rheem RTE 13 – Best Tankless Water Heater 2023

Rheem RTE 13 is another tankless water heater that is probably the most sold electric heater available on the market. Although it doesn’t have that many features as compared to the other best electric water heaters still, it provides excellent features at a reasonable price.

Rheem RTE-13 is one of the cheapest electric tankless water heaters; this best electric water heater comes up with a 4GPM capacity which is reason enough in this price range. Rheem electric tankless water heater comes with a price tag of 500 dollars which is unbelievable because many electric water heaters cost too much.

Rheem RTE 13 electric tankless water heater has a 4GPM water flow rate, you can instantly use hot water without any issues, and it can provide up to two continuous showers at a time. The electric tankless water heater also comes up with an On-unit temperature control technology that detects the temperature of hot water.

The LED display is installed in this electric tankless water heater which indicates an active element and the standby mode feature. This inline electric water heater is ideal for one-at-a-time hot shower households.

It is easily adjustable in super cramped areas, and you can even fit it above the sink because of its compact size. The best electric tankless heater works perfectly for singles or couples because they don’t need to use plenty of hot water at one time.

They can check the working of this inline water heater as an example to buy the advanced ones. It provides a good worth of the money spent on it.

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Why Should You Buy This Heater?

SioGreen IR30 – Best Infrared Technology Electric Water Heater 2023

SioGreen IR30 is the best electric water heater with very advanced specs and features that will allow you to enjoy clean and hot water both at the same time. This electric tankless water heater is perfect for those people who don’t just want hot water. It can clean the hot water as well which is a versatile feature of this on-demand hot water heater.

The electric tankless water heater works perfectly in cold regions with an almost 57°F temperature range. Infrared technology is used in this electric tankless water heater. The coil-less technology heats your water with infrared quartz which makes heat without the metal touching the water.

This feature is not common in typical electric water heaters as they can only heat the water by contacting it to the metal coil. So, by this application, you can enjoy the hot water without the irritating taste of the metal coil as this electric tankless water heater works on infrared technology.

Water not touching any metal means there is a zero chance of corrosion in the electric water body. You can easily enjoy hot water and that too without the accumulation of algae and bacteria because of infrared technology.

The hot water in other best water heaters is mostly contaminated. So,  IR30 can become a handful for you in removing most of the harmful bacteria from the water you use.

The electric tankless water heater only uses the energy required to heat the water which means you can save a lot on energy bills as well.

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Why Should You Buy This Heater?

Ecosmart ECO POU 3.5 – Best Point of Use Water Heater For Shower 2023

Ecosmart is a leading and famous brand in making many eco-friendly electric tankless water heaters. The new POU 3.5 is the electric tankless heater introduced by this company to meet the requirements of people who want to use hot water in any instance.

The electric tankless water heater is specially designed in a way that it can be attached to the sink easily. Keep in mind that this electric water heater is only for sinks and not for other purposes such as showers or flushes in the toilet.

The electric heater delivers 0.5 GPM of water at a temperature range of 57°F to 105°F. This electric hot water heater can’t be used in areas where the inlet temperature is less than 57°F. It is a point-of-use model for the best electric water heater and has a compact size. This water heater is ideal for bars, kitchen sinks, Wet bars, Doctor’s offices, or any other small offices.

This technology allows the electric tankless water heater to adjust the temperature with the flow rate respectively. This electric water heater only allows one sink of water at a time. So, it’s perfect for singles and couples. When placed correctly, this water heater can provide endless hot water whenever you need it.

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Why Should You Buy This Heater?

Rheem RTEX-13 – Best Rheem Tankless Water Heater 2023

Rheem RTEX-13 is an updated version of Rheem RTE 13 which has many new features and specifications for a reasonable price. The design and build quality are also good enough for this best electric water heater allowing you to enjoy instant hot water with ease and convenience.

This model of the electric tankless water heater has been out for a while but has already made itself one of the best electric water heaters available on the market. This electric tankless water heater is an ideal choice for a small household that requires one or two showers per head.

The Rheem performance water heater is perfect for you if you are living alone as it can accommodate two baths at the rate of 1.5 GPM simultaneously. The price of this electric tankless water heater is fairly justified because of the features it provides. The size is also compact and small and requires very less area to install.

The minimum flow rate in RTEX-13 is 4GPM which is good enough for singles or couples living in a small household. This flow rate also means that even if you are taking a hot water shower, someone else can wash their hands in another washroom with the availability of hot water.

The RTEX-13 requires straightforward installation, and you can install it yourself avoiding the cost of a plumber. The water heater consists of an active copper engagement with two heating elements. This electric water heater also possesses self-modulating power control technology by which you can adjust the output temperature you want.

RTEX-13 is ideal for saving high energy costs and bills. It is 99.8% energy efficient allowing you to save a large number of energy costs. The older version of this electric water heater was not much durable or reliable, but Rheem RTEX-13 has improved a lot in providing instant hot water with reliability and had a better performance than its older model.

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Why Should You Buy This Heater?

Stiebel Eltron Tempra 24 Plus – Best Electric Tankless Water Heater For Whole House 2023

If you want to make some major investments and enjoy instant hot water for the rest of your life without any major problems or issues, Stiebel Eltron Tempra 24 Plus is waiting for you. The whole house tankless water heater has all those features and specs which makes it one of the most demanding and famous electric tankless water heaters on the market.

This whole-house electric tankless water heater is made in Germany and has a sleek plus compact design along with many advanced features. The new Tempra 24 plus works ideally in both colder and warmer regions. The minimum activation flow rate required for this electric tankless water heater is 0.50 GPM.

The minimum and maximum output range this electric tankless water heater provides are from 86°F-140°F. At 42° F, the Tempra 24 plus provides a flow rate of 2.5 GPM which is quite impressive for colder regions and is equivalent to one hot shower.

While for warmer regions, this electric tankless water heater works like a charm. At 72°F, this electric water heater can provide a 5GPM water flow rate which is the equivalent of up to 3 hot showers. That means you can never run short of hot water because of the new Tempra 24 plus.

The Tempra 24 plus also features an Advanced Flow Control which has pretty good work to do.

For example, if the demand for hot water exceeds the capacity of a water heater, the advanced flow control can automatically reduce the flow rate a little bit to maintain a constant temperature output. The showers you take will always remain hot, no matter what the situation is.

Energy efficiency is up to the mark in the new Tempra 24 plus as it allows you to save much energy on your water or electricity bills. It only uses electricity when you need hot water and not in any other form. So, the energy consumption rate is meager in this electric tankless water.

Although, this electric tankless water is a bit expensive as compared to the other water heaters, looking at the features it provides, the Tempra 24 plus full justifies the price it came in.

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Why Should You Buy This Heater?

SioGreen SIO18 – Best Electric Water Heater for Hot Water System 2023

Another variant of the SioGreen company which has gotten the attention of many customers is the new SIO18 electric tankless water heater. This best electric water heater provides hot water immediately and proves itself to be one of the best electric water heaters available on the market.

This version of a tankless water heater is an excellent choice for large households (two or three bathrooms) where the demand for water is high. Infrared technology is used in this electric water heater which allows the water to heat on infrared rays and without any coils resulting in the water being hot and not smelly at the same time.

The typical water heaters use coils for boiling the water and due to this the water becomes smelly, but that is not the case with this best water heater. With no use of coils to heat the water, the chances of bacteria or algae accumulation are also very less.

So you don’t need to fear the water being contaminated because of its infrared quartz technology.

There is no chance of corrosion in the water heater as it works on a coil-less technology. The modulating technology installed in this electric water heater helps to keep track of temperature and then indicates the amount of power required to heat the water at that specific temperature.

In this way, it becomes the most efficient energy-saving electric heater as it allows you to save up to 90% of your energy.

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Why Should You Buy This Heater?

Best Electric Tankless Water Heater 2023 – Buyer’s Guide

Purchasing a water heater is a difficult task for many people. You have to be more careful and must have some knowledge about an electric tankless water heater to make a good choice.

If you are not very well aware of the most important aspects of buying the electric tankless water heater for your house, our complete buying guide is there to help you buy the water heater.

So, let’s discuss several important aspects to consider before buying water heaters:

Incoming Water Temperature 

The tankless water heater operates correctly when it needs to heat the water only at the rate of 30°F, or you can say that it’s the optimum heating temperature. Even the best and most expensive electric water heaters cannot produce a temperature of more than 50°F.

So, know your incoming water temperatures and make a decision accordingly.

Flow Rate Needs 

Different appliances require an unusual amount of hot water so that they can work accordingly. For example, a kitchen sink can require much lesser hot water as compared to a washing machine or a dishwasher. You should know how many appliances you are going to buy an electric water heater for.

The electric tankless water heater is also rated regarding its flow rate. We have made a chart of different flow rates that you may find useful for the home electric water heater. Let’s have a look at it,

Technical Specifications

After reading this chart, you should have got an idea about the size you need to buy for different demands. So, make your choice accordingly and buy the best tankless water heater whose size complies with the request of various appliances.

Sizes

The electric water heater comes in many sizes, and you must choose the one that perfectly suits the space you have left for your water heater. There are many under-sink tankless water heaters on our list that can be fitted under a sink easily.

There are others as well that requires more space as compared to the small ones. So, choose according to your needs and choose the one that acquires the space you have left for a water heater.

Materials Used 

The electric tankless water heater is made up of different materials. The most traditional and typical water tanks use materials that scale the lime deposition in the water heater and can cause problems in the heater. Nowadays, due to the advancement of technology, other elements like infrared technology are used in the electric water heater to reduce the scale of lime deposition.

So, better buy the best electric water heater in which advanced materials are used. Though they can cost more as compared to the typical ones, they can work for a more extended period with reliability and without any issues.

FHR & GPM 

FHR stands for first-hour rating, and GPM stands for gallons per minute respectively. The FHR factor shows how much water can be heated in an hour by an electric heater before it starts reheating while GPM is how much water it can produce in one minute.

That’s why you must have proper knowledge about how much GPM your electric water heater can accommodate and how much time it can produce hot water.

This is an important aspect to consider, and we will recommend you consult a professional so that you can know your house’s needs and can choose the best electric tankless heater respectively.

Local Climate 

Local climate or your room temperature is an important aspect to consider before buying an electric water heater. Electric water heaters work differently under different conditions.

If you purchased an electric heater that works perfectly in warm conditions but your environment is cold, the electric heater won’t work in the cold situation for you, and it will fail miserably to deliver its job.

So, before buying an electric tankless water heater, please have a look at your surroundings and the type of place you live in and make your choice accordingly.

Warranty 

Most electric water heaters come up with a warranty ranging from 3 to 6 years. You must consider the warranty of an electric water heater you are about to buy because in case it doesn’t work well, you can claim your warranty easily.

Look out for the electric tankless heaters that have got a longer warranty so that you can argue whenever your one creates problems for you. So, before purchasing an electric water heater, keep an eye on the warranty it provides.

Advantages of Electric Tankless Water Heaters

The electric tankless water heater has many benefits. Some of them are as follows :

No Stand Buy Heat Loss

Since we know that an electric tankless water heater doesn’t have any tanks, they don’t need to store water and can deliver the hot water at an exact moment right when you need it. In this way, they avoid standby heat loss, and there is no energy wasted in this process.

Service Life

The life of an electric tankless water heater is very high compared to the heaters that come up with a tank. The best electric tankless heater can last up to 20 years which is pretty much a high and long-lasting date. That’s the main reason they have a priority over the heaters that have tanks.

Unlimited Hot Water

The amount of hot water in a water heater tank delivers is limited. If the tank got empty, you have to wait for more hot water because the tank water heater can’t provide unlimited hot water.

Whereas in the case of the best electric tankless water heater, it doesn’t need to store any hot water because it is tankless and it can directly provide you with hot water without any delay. So, in this way, they ensure to deliver unlimited hot water without any issues.

Compact Design

Most of the water heaters with tanks have a drawback in that they do not fit into a smaller space. They need a large amount of space because of their size and tank accommodation. That’s not the case with the electric tankless water heater because it doesn’t have a tank.

So, it acquires much less space as compared to the tank water heaters. You can even fit them under your sink and they will be able to provide you with hot water without any issues.

Efficiency

Whether it’s the hot water supply or energy-saving ability, the best electric tankless heater beats the hell out of the water heater with tanks. It can quickly supply your continuous hot water, and its energy efficiency as well. So, electric tankless water heaters have got the upper hand in this regard as well.

Less Energy Consumption

Water heaters with tanks fail to deliver the job when it comes to energy consumption. They are power and energy-hungry which means they consume a lot of energy while providing you with hot water.

In this way, your gas or electricity bills touch the sky. Fortunately, tankless water heaters only require less amount of energy because they provide instant hot water.

They only use energy whenever the water gets cold or when you need hot water. In this way, they can consume very little energy-saving your electricity bills. You can easily see a drastic change in your electric bills when you install an electric water heater in your home or apartment.

Final Views

Electric water heaters have many applications. They are less expensive, and they require very little space to install. They also consume very less amount of energy saving you a lot in energy bills. So, after reading this buyer’s guide, we are pretty sure that now you can choose the best electric water heater available from our list.

Keep the following things in your mind :

So, this was a summary of the buyer’s guide to buying the top electric water heater. We hope that you enjoyed it a lot while reading our guide and have gained sufficient knowledge to make your own choice.

Conclusion 

So, after reviewing the top 10 best electric tankless water heaters, we are hopeful that now you can buy the perfect one depending on your needs and budget.

These electric water heaters can help you a lot in balancing your electric bills because most of them are eco-friendly and energy-saving.

So, now it’s your turn to make a choice and choose the best electric tankless water heater out there on the market.

Good Luck!