5 Best Tankless Water Heater You Should Buy For Your Family – All You Need To Know

The happiness of refreshing yourself with a hot shower in the morning, or returning home and having a hot bath after a tiring day is unparalleled. But for that to happen, it is needless to say, that you need to choose a best tankless water heater for your family. But with an array of tankless water heaters that are available in the market today, it might be harder than you think.

Well, fret not, that’s why we’re here! We would walk with you and help you to make a well-informed decision. Read the article to find out.

**Below, you'll see more detailed reviews, but you can also click the links above to see current prices and read customer's reviews on Amazon.


Why is a tankless water heater a better option for you?

Tankless water heater is becoming more and more common these days. But before we talk about the hot water heaters available in the market, it is important to know why a tankless water heater is better than its counterpart.

Better utilization of resources

A tankless water heater heats the water only when you turn the faucet on. This way, it prevents the wastage of power by holding gallons of water and heating it. Traditional water heater stores a large amount of water and heats it. Most tankless water heaters today run on natural gas or propane and even on electricity, and heat as much water as is required.

Long term savings

Even though the traditional water heaters are cheaper and easier when it comes to installation, the tankless water is the better option when it comes to long-term savings. This is because you are only heating as much amount of water as is actually required, thus saving both water and electricity bills.

Perfect fit even when space is less

Tankless water heaters are better for you if you have a restricted amount of space. Whereas the traditional water tanks take up a large amount of space, the tankless water heaters do not require a lot of space.

A Tankless Water Heater Outside The House

Continuous supply of hot water

No Need  To Worry About Running Out Of Hot Water When You Take A Shower

Unlike the traditional water heater which may get empty on continuous usage, since the tankless water heater heats the water when it is required, you will never run out of hot water. All you need to do is installing a water pipeline from water tanks to your tankless water heater.

A tankless water heater is in every way the best option for the modern home. It is better suited to the more compact and fast-paced lifestyle of modern times.

That being said, what all factors would you like to consider before buying a tankless water heater? Well, for that my friend, you have to continue reading the article.

What are the factors I have to consider before buying a tankless water heater for my house?

Now that we know why you should buy a water heater, let us look at some things that decide which is the best tankless water heater for your use.


One of the first things to look at your tankless water heater is its size. The size of the water heater determines the maximum temperature rise possible at a given flow rate. It is important to find a water heater that can supply your desired flow rate at the required temperature.

To find out the flow rate that you might require, determine the maximum number of applications that you want to run and their individual flow rate. Then, add all the individual flow rates to get the net flow rate required.

You also need to find the temperature that water has to be heated to. For this, you should know the normal water temperature and the temperature you wish to have.

For example, commonly the water we get is at 50 to 60 Fahrenheit. The normal household requires the water to be around 120 Fahrenheit. The difference of the both will give you the temperature requirement of your house.

Depending on your personal preferences and requirements, you should be able to choose the best tankless water heater for your use. You can ask your plumber’s assistance in case of any doubts.

Energy requirement

Another important factor to look out for while deciding the most suitable tankless water heater for your household is the energy requirement of the tankless water heater. Today tankless water heaters are available that run on natural gas, propane as well as electricity. So, it is important to find the system that is most effective and efficient for your house.

You can check for the EF (Energy Factor) rating of the water heater to determine how efficient it is. Today, stricter federal standards have caused the water heaters to have better EF ratings. The closer the rating is to one, the more efficiently the water heater works. It also helps you reduce your utility bills.

Tips To Consider While Installing Your Tankless Water Heater

  • While choosing the location for your tankless water heater, it is important to choose a place that is sufficiently ventilated.
  • The most efficient place to install your tankless water heater is on an outside wall that has close proximity to the water and electricity or natural gas supply source. This will help increase the efficiency of your tankless water heater.

Now that you know what all to look for in your tankless water heater, let’s have a quick look on some of the best and most sought after tankless water heater available in the market.

The Ultimate List Of Best Tankless Water Heater You Need To Go Through Before Buying One

**Below, you'll see more detailed reviews, but you can also click the links above to see current prices and read customer's reviews on Amazon.

Takagi T-KJr2-IN NG is a tankless water heater that works on natural gas. This is the smallest in the Takagi line of water heaters. This makes it perfect for small residential apartments and houses.

via Amazon.com

The water heater requires 4-inch category 3 stainless steel venting for maximum utilization. It is one of the most energy efficient tankless water heaters available in the market. No doubt, Takagi is world famous for their innovative and advanced water heaters.


  • Easy to install. You can install it yourself without the help of a plumber
  • 14000 BTU
  • Has a water flow rate of 6.6 gallons per minute
  • Inlet and outlet thermostat for constantly monitoring water temperature
  • EF of less than 0.85


  • It sometimes shuts off in mid shower
  • Expensive to install if you call a plumber
  • No warning about the need to recalibrate when using above sea level
  • The water heater does not come with the brass fittings that all other Takagi water heaters normally come with

Stiebel Eltron Tempra 24 Plus is a tankless water heater that works on electricity. It is one of the most sought after and efficient tankless water heaters in the market. One important factor about this tankless water heater is that doesn’t require ventilation, unlike the other tankless water heaters. It also has a sleek and attractive design that takes up very less space.

This water heater is assured to give you a lot of savings when it comes to the utility bill. Taking about the company, Stiebel is a company which is known for its engineering quality and technology.


  • No need for extra ventilation
  • Digital temperature control and monitoring
  • Improved German technology for enhanced power savings
  • Easy installation
  • Water heater is cost efficient


  • Hard water and low ph can easily damage the water heater. Thus this water heater may not be suitable for all conditions
  • Heavy gauge wiring and circuit breakers
  • Fluctuations in the water temperature in the home settings
  • The installation can be expensive

Ecosmart Eco 24 is a tankless water heater that works on electricity. Ecosmart tankless water heaters are more efficient than any other brand available in the market. The water heater comes with patented self-modulating technology that makes it an easy to use. Ecosmart is designed for countries where the incoming water temperature can go as low as 37 degrees.


  • One of the most energy efficient tankless water heaters available in the market
  • Patented self-modulating technology that gives you perfect temperature at all times
  • The water heats up fast and remains at a consistent temperature


  • The water heater is heavy on the electrical system and causes occasional blowing up of the fuse
  • The warranty becomes void if you install it yourself
  • Installation always cost more than the actual unit itself

This is yet another tankless water heater from the house of Takagi, which are renowned for their water heaters. The Tagaki T H3 DV N is a water heater that works on natural gas. It has a sleek and compact design aimed at pleasing the buyer.

The water heater is top of the line with computerized safety feature and no pilot lights to worry about. It is extremely powerful, capable of producing enough hot water for 3 to 4 baths depending on the climate.


  • Extremely powerful when it comes to heating water
  • Latest and computerized safety features
  • Doesn’t require stainless steel exhaust pumps. PVC is enough
  • Long yet easy installation


  • Bad customer service and maintenance
  • Requires a lot of maintenance

This is another tankless water heater from the German company on the list, the Stiebel Eltron DHC E12 works on electricity. Its small dimensions and innovative design make it easy to the eye, even when unconcealed.

Another unique feature of the water heater is that it has two models in one. You can switch between the 9000 watt and the 12000-watt models of the water heater with the help of jumpers during installation. It has a powerful heating system that can provide you with water in no time at all.


  • Easy to use and powerful
  • Small and unique design
  • Switchable between the 9000 and 12000 watts model easily during installation
  • Advanced German engineering


  • Not suitable for all water compositions. Low pH and hard water can significantly reduce the lifetime of the water heater
  • Looks like cheap plastic


A tankless water heater has so many advantages over the traditional water heaters. They are more efficient in both energy and time and take up very less space compared to the traditional water heater. They are a must have for all households in colder climates.

But with so many brands and types of tankless water heaters, it is not easy to choose one. Thus, it is highly recommended to bring factors like flow per minute and the temperature requirements into consideration. 

We hope that the detailed review of each of the tankless water heaters mentioned above along with their features, pros, and cons would help you in choosing the best tankless water heater.

Even though it is not easy to pick the most efficient and best tankless water heater, we would like to give our votes to Stiebel Eltron DHC E-12. Its powerful heating capabilities and superior German design make it shine above the rest. Its smaller dimensions make it a better option if space is a major concern.

However, all of the above-mentioned water heaters are ideal tankless water heaters and would fulfill your requirements.

So what is your take on this? How helpful were the reviews to you? Did we miss anything? Do let us know in the comments.

Abigail Jones

Hi, I'm Abigail. I like spending time tearing my house apart and putting it together back again. Join me on home improvement tutorials, tips on my blog.

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