Stiebel Eltron Electric Tankless Water Heater Review

The Tempra 24 plus by Stiebel Eltron water heater is considered one of the most advanced models on the market. The entire Tempra series has been completely redesigned for improved functionality. This model has been upgraded with a simple single flow sensor design and heavy-duty electronics and comes equipped with a hinged cover that gives consumers easy access.

This manufacturer produces a wide range of popular tankless models, however, the Tempra 24 is currently their top rated product and for good reason. The innovative design and easy setup allows homeowners to save on some serious space in the home and on their monthly electric bill, thanks to this water heater’s energy saving abilities.

Stiebel Eltron Electric Tankless Water Heater Assessment

This unit is designed to save homeowners up to twenty percent on their monthly electric bill, compared to other models in this price range. The temperature of the hot water can be easily adjusted thanks to the included temperature dial. This model features a number of advantages over a traditional gas powered tankless model. Since no venting is required, the cost of installation is significantly less.

This is a whole house unit that features a maximum GPM of 4.0, allowing the user to operate up to two fixtures that use hot water at the same time. This model also features the advanced flow control which is designed to ensure constant temperature output, even when multiple appliances are used at once. It also has 24 amperage at 2×50 min.

The Tempra 24 is recommended for point of use services such as kitchen sinks or small bathrooms and works well in apartments, offices and garages. When compared to other water heaters in this price range, this Tempra model offers better energy efficiency, considering it doesn’t have any stand-by heat loss and the water pipe is much shorter.

Tempra 24 Plus Pros and Cons


The advanced flow control feature provides a very precise temperature and is able to maintain the set temperature throughout the home. This tankless water heater also comes with digital temperature control that gives the user the ability to set the exact temperature up to a hundred and forty degrees. This product by Stiebel Eltron comes with a three year warranty. The water heater uses advanced microprocessor technology, which uses information that’s obtained from the temperature sensors and water flow, allowing it to constantly and easily monitor the temperature. The digital display allows users to check the water temperature which can go from eighty-six degrees all the way up to a hundred and forty. Because the advanced flow control works to automatically adjust the water flow through the heater, it works to significantly reduce any fluctuations in temperature. The Tempra uses a computer controlled motorized valve in order to minimize water flow. The knob located on the cover is designed for easy access for convenient temperature change. Consumers can enjoy an on demand supply of hot water, and a unit that will only turn on when the hot water tap has been opened. Unlike traditional water heaters, there will be no stand-by heat loss and no venting required. This is a model that’s easy to install, thanks to its compact size, which also helps to save a ton of space in the home. The water heater’s tankless design also helps to minimize the chances of leaking or sediment build-up, another common issue found in traditional water heaters.

Most consumers felt that the installation process was a breeze, however, if you live in an older home you may need to hire a professional. The manufacturer also will not void the product warranty if you fail to have the system installed by a pro, which is common requirement with most models of tankless water heaters.


The electrical service install is considered very heavy-duty. If you live in an older home, then the odds are that it will not have the type of electrical panel that can handle two sixty AMP circuits that are needed and a new panel can cost a couple of grand. Some consumers noted that even with professional installation they still noticed a flicker of the lights when the hot water is turned on. Other consumers noticed that if you use a heavy-duty appliance, such as a washer, and the shower at the same time, you’ll probably experience some dramatic pulsing on the water pressure. Because the washer tends to rapidly open and close the hot water valve, it fails to provide enough time for the piping to heat up and get hot water into a washer. For some consumers this was a deal breaker. Some consumers noted that you can run the hot water for a couple of minutes in order to heat up the pipes. While for some, installation is simple, other recommend professional installation due to the circuit breakers and heavy gauge wiring. Others had complaints regarding this model’s energy saving abilities stating that their electric bill actually went up after installation.

Tempra 24 Conclusion and Rating

The Tempra 24 Plus by Stiebel Eltron Electric Tankless received plenty of mixed feedback. For some the install was easy, while others recommend having this model professionally installed. If you have no prior experience with this type of installation we definitely recommend hiring an electrician, otherwise the water heater may not function correctly. The fact that this model is marketed as energy-efficient left some consumers scratching their heads, especially when using this heater seemed to have a negative impact on their electric bill. There may also be some limitations in terms of the types of fixtures and appliances you can use with this model so keep this in mind when you’re shopping around. Definitely a water heater that has a lot to offer, consumers with older homes will probably want to pass this model by and find a more flexible tankless water heater. According to consumers, the Rheem RTEX 13 electric tankless water heater is a model that’s able to perform and deliver, so check this product out if you’re living in an older home or your electrical panel isn’t compatible with the Tempra.