Stiebel Eltron Vs Bosch

Stiebel Eltron vs Bosch?

What can be a better brand to pick when you are searching for endless hot water?

These brands are both German companies, however there are some differences between them. The companies provide a wide range of products with different specifications and capabilities.

Stiebel Eltron offers a range of electric and mini-tank water heaters. Bosch manufactures and sells various products, such as smart home devices, HVAC systems, and water heating devices.

They offer electric and gas tankless water heaters designed for energy efficiency and convenience.

In this article, we contrast Stiebel Eltron vs Bosch water heaters to help you assist find your way through the oversaturated tankless water heater industry.

Stiebel Eltron vs Bosch


Overall, Stiebel Eltron waters heaters are better in our opinion. Their devices are quieter, can be used with multiple devices at the same time while giving continuous flow of hot water and it gives precise temperature control. Bosch buyers on the other side complained about missing installation parts when bought in a box store, smaller capacity, and harder maintenance because of de-installing.

Stiebel Eltron Water Heaters

Stiebel water heaters are built for performance. Stiebel Eltron is the company that produces the Tempra Plus series. These water heaters are known for their advanced flow control technology, self-modulation energy technology, and constant temperature output [1].

They have a variety of models to suit different household needs.

Furthermore, Stiebel Eltron’s unique Advanced Flow Control ensures that the hot water will always retain the desired temperature even when demand exceeds the system’s capacity. Their heaters are equipped with solid copper heating chambers and intelligent self-modulating technology.

The Tempra Plus always uses the least energy possible.

Stiebel Eltron sells several models with different heating capacities. Stiebel Eltron tankless water heaters have a 7-year warranty for residential and a 3-year warranty for commercial installations [2].

The lifespan of these water heaters is around 20 years or more.

Stiebel Eltron Water Heater Stand-Out Features

  1. Advanced Control of flow

Stiebel Eltron’s Advanced Flow Control is an exclusive feature in the Plus versions of their tankless electric water heaters. This innovative technology ensures a consistent hot water supply at the desired temperature, which is possible even when multiple fixtures are used simultaneously. Hot water will continuously flow at a constant temperature even if there is considerable fluctuation in the incoming flow. [3]

  1. Energy Efficient

The self-modulation energy technology helps optimize energy usage. The heater is only activated when hot water is required. Consequently, it helps save a significant amount on electricity expenses.

  1. Digital Control of Temperature

The Stiebel Eltron water heater has a digital thermostat that allows for customization of the temperature. With the help of the computerized control, you can raise the temperature from 86 to 140 degrees Fahrenheit. All you need to do is to turn the knob to the correct number for your ideal temperature [4].

  1. Flow Rate

The Tempra Plus model comes with a maximum constant flow rate of 4 GPM. This product will likely achieve a medium-rated GPM flow rate compared to other tankless water heaters [5].

In addition, it can run numerous lights while simultaneously maintaining a consistent temperature.

  1. Simple Installation

One of the key advantages of the Stiebel Eltron Tempra Plus is its simple installation process. The installation requires no venting. This means that it is suitable for both commercial and residential installations. Its compact design also allows for easy installation in various locations.

Bosch Water Heaters


Bosch offers the Tronic series, which includes models like the Tronic 3000T and 6000C. These models are designed to provide an efficient and reliable hot water supply. They are known for their reliable performance and consistent temperature output [6].

These heaters provide hot water on demand, which reduces energy consumption and utility bills. The brand manufactures several compact and space-saving models with different capacities. This makes them suitable for various household needs.

Bosch products include a fairly complete line of tankless water heaters.

Their models have an efficiency rating of 78-95% and heating capacities of 75,000-225,000 BTUs. The larger units are capable of supplying two showers simultaneously. All systems include a 15-year heat exchanger warranty and a 2-5-year warranty on other parts, depending on the model.

Bosch Water Heater Stand-Out Features

  1. High-Quality Heat Exchangers

Bosch tankless water heaters use high-quality heat exchange systems. The heat exchangers guarantee fast and reliable heating performance. They have a wide temperature range and deliver hot water at a consistent temperature.

  1. Advanced Electronics and Diagnostic System

Bosch tankless water heaters consist of cutting-edge computerized controls and exceptional diagnostic systems. The electric water heater versions contain a temperature adjustment knob and an LCD electronic display for temperature monitoring and control. Bosch Greentherm models can be controlled remotely using your smartphone [8].

  1. 50% Energy Savings

Bosch tankless water heaters are highly efficient, which reduces energy costs even further. Bosch tankless water heaters are designed to be highly energy-efficient. They are designed to only heat water when needed. This therefore helps lower your utility bill.

  1. Versatility

Bosch tankless water heaters are versatile and can be used in various applications. For example, the 3000T models have a wide range of applications. You could install them under the kitchen sink, in a corner of your garage, or even in your RVs and boats. Thus, they provide hot water wherever needed.

  1. Very Long Lifespan

Bosch water heaters are resistant to rust and scaling. This is because they are made up of high-quality materials and glass covering that increases their durability, reliability, and average lifespan. A standard Bosch tankless water heater can serve you efficiently for over 20 years.

  1. Compact Size

Bosch tankless water heaters are small and take up little space. The compact design of Bosch tankless water heaters offers users a variety of installation alternatives. They can be installed in various areas, including utility rooms, closets, and walls.

Stiebel Eltron vs Bosch: Reliability

Stiebel Eltron and Bosch are reputable brands known for their quality and reliability. Stiebel Eltron has a long-standing reputation for manufacturing high-quality tankless water heaters. The advanced flow control and self-modulation energy technology contribute to the overall reliability of their units. Their products are designed to provide a consistent hot water supply and are built to last.

Bosch water heaters are resistant to rust and scaling. This is because they are made up of high-quality materials and glass covering that increases their durability, reliability, and average lifespan. A standard Bosch tankless water heater can serve you efficiently for over 20 years.

However, the reliability of a tankless water heater also depends on other factors such as proper installation, maintenance, and usage.

Related: Rinnai vs Bosch Tankless Water Heater


Both Stiebel Eltron and Bosch offer reliable and efficient tankless water heaters. You can therefore select either of the brands and be assured of reliable operation for long. Stiebel Eltron’s Tempra Plus series has advanced flow control and self-modulation energy technology. Therefore, it ensures a steady supply of hot water and optimized energy usage.

Bosch’s Tronic series is known for its reliable performance and consistent temperature output. Regular maintenance, such as descaling and flushing, is essential to ensure optimal performance and longevity of your water heater.

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