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7 Best Tankless Electric Water Heater Reviews 2021

Tankless electric water heaters are among the greatest modern innovations as they offer a constant supply of searing hot water in the winter while reducing your utility bill! They are far more energy-efficient than their tank-style counterparts, capable of saving up to 60% of energy.

Any high-quality tankless electric water heater will make sure you never run of hot and cozy water. You won’t have to worry about having to heat the water anymore! It’s much slimmer, low-maintenance, and highly durable. However, finding the right one will be pretty tough.

Our tankless electric water heater reviews will assist you in identifying the best options out of countless options. We’ll save you from the trouble of scouring the market to find one.

7 Best Tankless Electric Water Heater Reviews

Here you go, the best tankless water heaters that you can buy to fortify your house to battle against the harshness of the cold season. Winter is coming, but there is nothing to worry about as they can help you brace against anything the season throws at you!

1.    Stiebel Eltron Tankless Electric Hot Water Heater

Stiebel Eltron Tankless Electric Hot Water Heater

The Stiebel Eltron Tankless Heater is designed by skilled German engineers to provide maximum comfort and reliability at your house. Boasting state-of-the-art technology and features, it’s the best electric tankless heater, and we’re sure a lot of satisfied users will agree!

This model is equipped with Stiebel Eltron’s patented Advanced Flow Control technology to smartly provide a continuous flow of hot water. The device itself will make sure to keep the water at a comfortable level.

It can detect the demand for hot water and maintain the intensity of the flow to an optimum level so that your hot showers are never interrupted!

You’ll be impressed by this heater’s super-sleek and slim design. Appearances can be deceiving, but that’s certainly not the case with this model because it performs better than it looks! You won’t have to allocate a lot of space to install it, and the fact that it doesn’t require any venting makes it a very convenient product.

Thanks to the auto-modulation and the control over water flow, this thing is capable of cutting down the energy costs. You will even get to monitor the energy savings!

This tankless hot water heater unit is also designed to be user-friendly with an easy-to-use electronic switch, water temperature displays, and memory buttons. Overall, it comes with everything you expect to find in a modern tankless heater, making it the best tankless electric water heater on our list.

Pros

  • Packed with top-notch modern features
  • Comes with a slim and attractive design
  • Capable of cutting down the energy costs significantly
  • Ensures uninterrupted flow of hot water on-demand

Cons

  • The flow sensor may wear out too fast

2.    Rheem RTEX-18 18kW 240V Electric Tankless Water Heater

Rheem RTEX-18 18kW 240V Electric Tankless Water Heater

If you’re looking for a supply of quick and continuous flow of water whenever you want, Rheem RTEX-18 can be a fantastic choice for homeowners. It’s astoundingly easy to use and gives total control over the water temperature.

Built with a copper immersion heating element and completed with brass, it’s incredibly durable. Additionally, they’re threaded for allowing you to easily replace them should you ever need to! Aided by the self-modulation feature, this model can save money by limiting energy usage.

The modern thermostatic control comes equipped with an easy-to-read LED display and allows you to change the temperature at a 1-degree increment. As a result, you can set the temperature to perfection.

Thanks to the NPT water connections on the bottom and the slim design, you will find this Rheem model to be exceptionally easy to set up. You won’t have to allocate nearly as much space as a storage-tank water heater for this one. It’s easily one of the best tankless water heater units out there.

Pros

  • Comes with a solid heating element for durability
  • Boasts a slim and light design for easy wall mount
  • Limits energy usage to eliminate energy wastage
  • Offers complete control over the water temperature
  • Heats up cold water within mere seconds

Cons

  • Installation is kind of expensive

3.    EcoSmart ECO 11 Electric Tankless Water Heater

EcoSmart ECO 11 Electric Tankless Water Heater

EcoSmart ECO 11 Tankless Water Heater is an innovative unit made to make life more enjoyable during the cold winter seasons. You will have a reliable water heating solution that gives you an endless supply of hot water while keeping the utility bills down if you go for it!

This electric tankless hot water heater model comes with a slim profile that is light enough to be easily mounted on your wall. It won’t take up nearly as much space as a storage-tank water heater.

After a simple installation, it will always be ready with heated water, so you’ll never have to spend any time waiting for heating water. That’s because the heating process is incredibly smooth!

Featuring an effective self-modulating technology, this tankless unit doesn’t use any excess energy but only the amount required for water heating on demand. Furthermore, it remains in an energy-saving mode when it’s not needed and only uses energy when you demand it.

This model provides digital temperature control, allowing you to choose between 80 to 140-degree Fahrenheit. It will give you peace of mind knowing that warm water is always available to you!

Pros

  • Capable of saving up to 50% of costs
  • Comes with a space-saving design
  • Easy to set up and use
  • Provides control over the water temperature

Cons

  • Only suitable for low-flow applications

4.    Ecosmart ECO 18 Electric Tankless Water Heater

Ecosmart ECO 18 Electric Tankless Water Heater

The best electric tankless heater is hard to come by, but the Ecosmart ECO 18 can put an end to your search because it’s an awesome product for your house. It’s technologically advanced and comes fitted with top-notch features to make your life easier in the winter!

This model will effortlessly fit any space of your choice, whether you want to use it for home, office, or workplace. When you switch to it from storage tank water heaters, you’d be surprised at its energy efficiency.

It’s smart enough to reduce energy usage by limiting the energy needed to heat the water using advanced self-modulating technology. Furthermore, this thing jerks into power only when your water demand becomes apparent and goes to an energy-saving mode when you don’t need it.

Offering excellent temperature control, decent water flow, and easy installation as well as operation, this Ecosmart model is undoubtedly an impressive device for homeowners. It will give you enough water to take long showers or use your washing machine!

Pros

  • An 18-kilowatt unit that offers powerful and controlled water flow
  • Compact design offers space-saving installation
  • Comes complete with amazing features for energy savings
  • Allows effortless temperature control from 80 to 140-degree Fahrenheit

Cons

  • Installation can be costly

5.    ECOTOUCH Tankless Electric Water Heater

ECOTOUCH Tankless Electric Water Heater

The ECOTOUCH ECO55 is the smartest device on our electric tankless water heater reviews. It comes with plenty of features to make it super-convenient. After setting this thing, all you’d have to do is turn on the tap to enjoy warm water whenever you want!

Powered by a 5.5W heating system, this model can heat up and deliver hot water within seconds! There is no need for preheating.

Featuring a self-adjustment technology, it will adjust the power based on temp setting and flow rate to reduce energy consumption and ensure comfort.

You will love how easy it is to set the water temperature accurately, thanks to the digital display and the responsive touch control panel.

It comes with multiple protection to make it durable and long-lasting. Besides, this water heater model is so small; you can easily mount it underneath your sink or any other convenient place.

Pros

  • It’s completely safe, durable, and reliable
  • Equipped with smart features that make it super-convenient
  • Offers instant water heating and an endless supply of hot water
  • Sleek and compact design allows easy mounting

Cons

  • Comes with short cords

6.    Stiebel Eltron Tempra 24 Plus Tankless Water Heater

Stiebel Eltron Tempra 24 Plus Tankless Water Heater

The Stiebel Eltron Tempra 24 Plus is a comparatively more powerful version than the Stiebel Eltron tankless water heater that we’ve previously reviewed. Just like that, it also boasts competent German engineering.

You won’t face any trouble in installing this sleek and compact model that doesn’t require any venting. Although compact, it provides outstanding performance and a never-ending supply of warm and comfortable water even when the temperature is extremely cold.

This device maintains the temperature automatically and eliminates energy losses with the help of an intelligent self-modulating feature. It’s practically noise-free, so you can mount it anywhere you like without disrupting your room’s atmosphere. You will get to see how energy efficient it is thanks to the savings monitor.

For delivering accurate temperature and optimum energy efficiency, this Stiebel Eltron model comes complete with easily readable displays. Moreover, it features preset temperature buttons that allow you to swiftly change to a preferred temperature setting.

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

  • The threaded brass fitting should’ve been tighter

7.    Rinkmo Tankless Electric Water Heater

Rinkmo Tankless Electric Water Heater

Rinkmo Electric Tankless Water Heater is an ideal device for delivering hot water across your entire house instantly! It’s exceptionally fast, easy to use, and offers fantastic energy efficiency to cut down your electricity bills.

This model features multiple high-quality sensors for keeping the flow rates and temperature stable so that you enjoy comfortably hot water. There won’t be any irritating fluctuation in temperature or water flow.

You will have your water ready within just 3 seconds, delivering hot water almost instantaneously. Preheating isn’t necessary so you won’t have to spend any time waiting. It requires a lot less space than a storage-tank water heater.

This thing is pretty safe to use as it comes with an auto-protection feature that shuts off the heating automatically when the temperature exceeds 166-degree Fahrenheit. You can keep track of the temperature by checking the display. All in all, this is a decent water heater that will save you money while providing endless water.

Pros

  • Super-safe to use as it prevents any risk of burnout
  • Comes with a small and compact design for convenience
  • Keeps the temperature and water flow stable and comfortable
  • Reduces heating costs by up to 60%

Cons

  • Not suitable for a large house

Features to Look for Before Buying Tankless Water Heater

Buying a tankless water heater can be an expensive endeavor, so you don’t want to end up with a poor-quality model that malfunctions too frequently. That’s why it’s important to consider several aspects and features before making your purchase. With that in mind, here are some crucial features that are worth your consideration.

·        Initial Cost

Tankless water heaters tend to be pretty costly. Some are more expensive than others. Pricier tankless models usually come with added features and more advanced technology. However, it’s possible to get high-quality products without spending a fortune because there are plenty of affordable ones out there.  

Despite the hefty price tag, these heaters will save you a lot of money in the long run as they are incredibly energy efficient.

·        Fuel Type

Tankless heaters are fueled by gas or electricity. You have to make your choice between them. We aren’t going to indulge in an electric vs gas tankless water heater debate, but we’re going to clear things up.

Let’s start with electric tankless water heaters. They are smaller than natural gas tankless water heaters and easier to install as they don’t need any venting. You won’t have to do much maintenance either.

Additionally, they’re comparatively more energy efficient. However, they aren’t as powerful as gas-powered water heaters.

Gas tankless water heaters are incredibly powerful and offer a faster GPM flow rate. However, they come with an expensive price tag, require heavy spending on fuel costs for buying natural gas or propane, and installation is also more complicated.

Additionally, a gas water heater may require frequent maintenance as well.

A natural gas tankless water heater is meant for bigger houses that have a higher demand for hot water. It’s capable of offering faster performance and churn out tons of water without any issue. However, you would have to regularly purchase gas to keep a natural gas tankless water heater running.

If you’re looking for convenience, low-maintenance, and affordability, an electric tankless water heater will be a better choice than a natural gas tankless water heater. That’s only if you don’t need a heavy-duty device.

·        Flow Rates

Hot water heaters come with flow ratings that tell how much water will flow out of your faucets at once. It’s an important thing to consider. Maximum flow rate is usually rated using gallons per minute or GPM. You have to choose the right flow rate for your house.

If you’ve got a lot of faucets in your house, you will need a 6 GPM flow rate unit. Small houses will be fine with a 1.32 GPM of maximum flow rate.

·        Size

Tankless water heaters don’t need storage tanks, so they tend to be pretty small and lightweight. However, this can vary from model to model. So, check out which size works out for you the best and go with that one. If you’re thinking about capacity, you should consider the flow rates instead.

·        Ease of Use

You should prefer buying a tankless water heater that’s super-easy to use. It should come complete with advanced and smart features that make it user-friendly and convenient.

Features like self-regulation mechanisms, digital displays, and easy-to-use control buttons make these products exceptionally easy to work with. You should also make sure that the device comes with a sturdy heating element and safety features. The best tankless water heaters are the easiest ones to use.

Final Words

Hopefully, we’ve been able to help you find the right device using our tankless water heater reviews. The best tankless water heaters will give you comfort during the cold winter seasons. You won’t have to stay away from the water because it will always be hot and comfortable.

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