Stiebel Eltron Tempra 24 Plus Full Review

Stiebel Eltron Tempra 24 Plus Full Review

Having a professional heater always eases down the difficult works. Whether you need a hot bath or multiple faucets with hot running water, you need a heater that will be able to provide you the optimum support. The Stiebel Eltron Tempra 24 plus is one such product that offers you the best performance.

However, if you are just seeking around to know if the Stiebel Eltron Tempra 24 plus is at all a perfect match for you or not, this is the place to be. With our complete review on the Stiebel Eltron Tempra 24, you can get to know all about the Performance, Features, Design, Value and much more about the product.

Read below to know complete in-depth details about the product.

1. Endless Hot Water

The one feature that will surely impress you the most about the Stiebel Eltron Tempra 24 plus is the heating speed and the flow of water! The relation between them is always on the higher side so that you can get a fast rate of hot water flow.

So, this Tempra tankless water heater comes with a perfect balance of 1 GPM flow while having a 90-degree rise. Coming to the average use of the product, you can also find a 20-degree rise at a GPM of 8. So the product is compatible enough for delivering you high-speed hot water at an endless rate.

2. Low Fluctuation

The Stiebel Eltron Tempra 24 plus includes a top-of-the-line microprocessor for the use. This technology is highly updated and because of this, it can provide stability to the product. So even if you are in a cold-weather locality and you need a high supply of hot water, it can easily match the requirements.

This is the reason why the product has a top manufacturing configuration and because of this, the product has decent stability. Coming to the fluctuation, it has almost low fluctuation at all.

3. No Venting Needed

The one impressive feature that we liked about the product is the easy installation option. Most of the gas-based heaters include proper energy efficiency. But at the same time, it may be slightly harmful to you to have the exhaust gas inside the bathroom. You need a proper venting option for this.

But the situation with the Stiebel Eltron Tempra 24 plus is different. Since the product is completely made out of electric power, you will not require any exhaust option at all. So it does not require any type of venting.

4. Great Design

Apart from the performance and the flow rate, the one attractive thing about the Stiebel Eltron Tempra 24 plus is the compact design. Coming to the looks, it may not be the best one out of all the heaters available, it is still a very effective model. The product comes with decent looks and has a sleek design.

There is no tank installed and so it neither eats up a lot of space. The dimensions are around 21 x 20 x 9.6 inches which are quite small to fit into the wall. So installing the product will never be a problem for you. Moreover, it includes an LCD panel that will always show you the current operating temperature of the water flowing out.

5. Seismic Proof Construction

Coming to the built-up of the Stiebel Eltron Tempra 24 plus, needless to say, that the product has a proper and stable construction. When you are installing a proper tank-based hot water, you need a proper seismic proof construction. This is specifically used for heaters which are used in places that have more contamination.

This coating helps to prevent the tank from forming any type of contaminants or limestone. But with this Tempra water heater, there is no tank present and the heating takes place with the flow of water. So there is no such preventive construction required. 

6. Digital Temperature Control

Apart from the basic features of the heater, the one thing that will impress you is always the digital temperature control. It is obvious that if you live in areas that change the climate drastically due to the seasonal changes, you will not always require the same temperature.

But without any temperature control, it will get more difficult for you to adjust it. The Stiebel Eltron Tempra 24 plus features a digital temperature control at the front panel of the heater. This will allow you to change the temperature according to the requirements and will give you the proper results.


Apart from the features of the Stiebel Eltron Tempra 24 plus, what attracted us the most is the performance of the product. We found that it can easily scale up to a range of 5.0 GPM of hot water.

This flow rate is determined by the rate of hot water being heater according to the rise of 30 degrees Fahrenheit. So when it comes to the rate of flow, a 5.0 GPM seems to be decent for any household. 

We tested the rate by turning on 3 showers at the same time and it worked perfectly for a long time. However, it has key specifications that make the product much more valuable to use. This works well when the incoming water is cooler and it requires time to heat the water.

So when we compared the Stiebel Eltron Tempra 24 with other regular heaters, we found that most of the other heaters can provide around 3 GPM. So the Tempra 24 Plus is much faster in performance.


The Stiebel Eltron Tempra 24 plus comes with a proper warranty option for using the product. Unlike most of the other products, this water heater offers a 7-year warranty on the internal components. Apart from this, you can also get a 3-year warranty on the heating element.

But for this, you need to be eligible to claim the warranty. The only requirement is that the product must be installed by a professional. If not, it will void the warranty regulations from the manufacturer and you will get a proper result. For more information, you can refer to this link.


When you consider the value of the Stiebel Eltron Tempra 24 plus, certain things will come to mind. The first thing that you need to consider is the efficiency, performance, and daily running costs. This electric tankless water heater comes with an advanced flow control feature. This feature is specially used for self-modulating technology.

So it will only heat the water when the heater senses a flow of cool water inside. So these cuts down the regular running costs and give you a proper result. You will not have to worry much as the Tempra 24 plus is indeed a valuable purchase.

Company Information

Stiebel Eltron dated back to 1924 as one of the pioneers of the water heater industry. Coming from the Grassroots of Germany, Dr. Theodor Stiebel started this company to provide the most advanced solution for the water heating requirements.

In fact, it all started with the production of the immersion water heaters. The ideology behind the foundation of Stiebel Eltron was simple- Make it Right, then keep making it better.

Coming to the company service and the support, needless to say, we found that the company has decent service. When we contacted the support of the Stiebel Eltron, we were happy with the response. We received it only after a few hours.


  1. It is easy to install
  2. The rate of flow is fast
  3. The product has standard wiring options
  4. It includes a limited warranty


1. Not so good for the hard water


This is mainly because the Tempra 24 plus is manufactured with the technology of PSI7. This is not much compatible with hard water. In such a situation, you may often find that the heater is not being much compatible to handle the pressure.

So you need to put an extra effort into the maintenance. The best thing to do would be to use vinegar extract and them clear out the pipes. Try regular flushing along with it to keep the heater safe.

2. No alternative power source


The product is specifically designed to operate under electricity. This is specifically useful for the city and urban locality where the heater can consume low electricity and perform well.

But if you are looking for a gas-based fixture, this may not be the correct option for you. You may have to take the help of alternative devices. The Tempra 24 plus may not be the best option for you under such conditions.

3. Not so good for extreme cold weather


You may not have to panic too much about it. The Stiebel Eltron Tempra 24 plus is a suitable product for areas that are cold but not extremely chilly. In such a condition it will only be able to provide lukewarm water. The heater works only when it recognizes a flow.

So by the time, it can heat the water, it has already come out of the faucet. So the only thing that you can do is set up the thermostat at a higher temperature. This may help you to get a decent temperature.

Frequently Asked Questions [FAQs]

Q1. What is the minimum configuration that I need?

A1. To make sure that the Stiebel Eltron Tempra 24 plus is working perfectly, you need to consider a few factors. Some of them are mentioned below:
1. Voltage: 240
2. Maximum temperature Increase: 92
3. Amperage: 2×50 Min
4. Wattage: 24
5. Working pressure: 150 PSI

Q2. Is the Heater a Bit Noisy to use?

A2. I’ll be frank on this, we have tested the Stiebel Eltron Tempra 24 plus in different temperature settings. We have tried this even when the groundwater is cold and when it is normal. But we have never faced such issues when the tankless water heater starts making noises. 

Q3. Is there any Child Lock System?

A3. Only the high-end products may have some lock features like this, but the Stiebel Eltron Tempra 24 plus does not have such options. For safety, always keep the main power unit off while you are not using the product.

Q4. Does the Stiebel Eltron Tempra 24 plus save up costs?

A4. Now if you compare the Stiebel Eltron Tempra 24 plus with other gas-based models, the latter will have more efficiency.
However, when it comes to all the electric-based heaters, the Tempra 24 plus is much more effective. The manufacturer claims that it can always save upto 20% of the daily running costs. However, this is applicable only when there is a sense of flow.


Considering the performance and the other specifications, we would say that the Stiebel Eltron Tempra 24 plus is a top buy. Moreover, the product seems to be extremely professional when it comes to performance and high capacity. But certain factors make the Tempra 24 plus edge past over others.

We hope that going through the complete review mentioned above will help you to go ahead with the heater. If you still have some doubts to clear, you can mention it down in the comment section.

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