The Best Electric Tankless Water Heater Depending on Your Budget.

EcoSmart ECO 11 Vs Stiebel Eltron 29 Plus Tempra, which Is The Best Electric Tankless Water Heater?

Tankless electric water heater heaters have been on the rise for the past few years. In the year 2017, at least 4.1 million shipments were made, while it was increased to 4.22 million shipments in 2018. Its reliability and cost-saving properties are what makes it so popular. It is more efficient, requires less space, and consumes less energy. This is why I think a lot of homeowners have replaced the old tank water heater with tankless water heaters.

Best Electric Tankless Water Heater

This type of water heater systems have the following benefits.

  • Consumes less energy, which means lower electricity bills.
  • Doesn’t require a vast installation space as there is no water tank.
  • Provides hot water whenever needed.
  • Increases the resale value of the property.
  • Longer life expectancy. (At least 20 years)
  • No risk of water leakage.

Here is my review of two of the best electric tankless water heaters.


  1. EcoSmart ECO 11 Electric Tankless Water with patented self-modulating technology.


This model is one of the most efficient tankless or On-demand water heaters. It can save energy up to 60 percent, which is amongst the best energy savings offers. Self-modulating technology is the reason why this device saves a lot of energy. It regulates the energy consumption depending on the volume of water that needs to be heated. In terms of electricity consumption, ECO 11 is a winner.

The device is compact and saves a lot of space, so it is best suited for smaller apartments and houses. Water flow rate is 2 Gallons per minute, and this means it can heat up to 2 Gallons of water in a minute. The model we are talking about is not recommended for those households with more than 4 members, or where more hot water is needed. However, there are more powerful versions of this model for larger families. The ECO 11 Electric Tankless Water Heater is most efficient in places where the temperature is 67°F and above. The water flow rate will decrease in colder weather conditions. It means the water heater may not be able to handle three simultaneously operating sinks on a very cold day. This is probably because of its compact size.


Another plus point for this water heater is that it comes with a limited lifetime warranty which only applies to major parts. The installation process is very simple, and it can supply two sinks and one shower with hot water simultaneously. In colder climates, this water heater can only run two sinks at a time. To wrap it up, this electric tankless water heater is a whole package. It will save money, space, and energy. This is an excellent buy if you live in a small apartment or house. The ECO 11 Electric Tankless Water Heater is a very popular choice, just read the reviews and see for yourself.

EcoSmart ECO 11 Vs Stiebel Eltron 29 Plus



  • Self-modulating technology.
  • Compact, and saves a lot of space.
  • Components or parts are easily replaceable.
  • The installation process is simple and easy.
  • Lifetime warranty.
  • Highly durable.
  • Digital temperature .
  • Reasonable price.




  • Not suitable for large families


  1. Stiebel Eltron29 plus Tempra.


This model is best suited for large families that need a lot of hot water. If you want to replace your standard water heater tank with a tankless water heater systems, the Tempra 29 plus is the one. This model is often compared to a water heater tank because of its ability to handle multiple showers and sinks with ease. The difference is that this device is tankless, equipped with more advanced features, and consumes less energy. As a matter of fact, this model can save up to 15-20 percent of energy cost, although this will depend on how often you use it.

This model too is available in different versions, and you can choose according to your needs. The advanced flow control technology is the main advantage of this model. This technology is so clever that it regulates the water pressure when the user increases the use of water. By increasing or decreasing the water pressure, water temperature is kept constant. An extra added feature of this model is the savings monitor, which displays the cost savings.


The Tempra 29 plus is a perfect blend of German technology and engineering. You can control the water flow electronically, and this ensures optimum energy savings. It also has an auto modulation, a digital temperature display, and the output temperature can be adjusted with a knob. The output temperature ranges from 86 degree F to 140 degrees F. This model is quite expensive, but it has everything you’d expect from an electric tankless water heater. Its compact design allows you to save more space.  The Tempra 29 plus can also be used commercially. At 40 degrees F, it can heat up to 3 Gallons of water per minute, and 6.5 Gallons at 75 degrees F. It’s a great buy if you want a water heater that will supply an unlimited and uninterrupted hot water to your entire house.

Stiebel Eltron 29 Plus Tempra, Tankless Water Heater,



  • Silent operation.
  • Requires less space.
  • Does not require venting.
  • Advanced flow control technology that ensures constant temperature output.
  • Auto modulating saves energy constantly.
  • Digital temperature display.




  • More expensive as compared to other models.

Stiebel Eltron 29 Plus Tempra Compared

EcoSmart ECO 11 Vs Stiebel Eltron 29 Plus Conclusion.


As stated earlier, the tankless electric models are far more efficient than the conventional models. The most advantageous feature of these models is that they’re small and can be installed anywhere in the house. Some models, however, require upgrading the electric service to your home. Mentioned above are the two best electric tankless water heaters available on the market.


However, if I were to choose one, I’d pick the Tempra 29 plus, it works great in colder climates and there won’t be a shortage of hot water even when an extra member is added into the household.  You can choose the one that will meet your requirements. Tips on how to choose your water heater are.


If you are from a cold region, you’ll need a model that has a higher GPM or Gallons per minute water flow rating. If there are four people living in your house, getting a heater with at least 4 to 6 GPM is recommended. Although it’s not so important, it is worthy of mentioning that this type of water heaters also has anti-freeze technology. A little research on your own would be excellent too. We appreciate there are other brands, some better than others. The Bosch tankless water heater is another popular selection. The Tronic 3000 T 4-Gallon (ES4) almost made it to our final two to compare.

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The Best Electric Tankless Water Heater Depending on Your Budget.

time to read: 5 min