Bosch Tronic Heat 3500 24 23.76 kW 400 H (7738502602)
 | Outdated Product Powerful and efficient electric boiler, which is characterized by convenient operation and a reliable heater. This model is the most powerful and productive in the Tronic line. The device has an electronic control system, which is extremely easy to set up thanks to the LCD screen. The key advantage of the model is the use of heating elements with a system of uniform load distribution. Heating elements are made of stainless steel. The Bosch Tronic Heat 3500 24 electric boiler operates on the basis of a traditional single-circuit system. But in this model there is support for both heating and hot water. For additional hot water connection, a motorized three-way valve and an indirect heating tank are required. The device is already equipped with a circulation pump and an expansion tank. The p...rogrammer is responsible for setting the operating modes of the heating system. An additional room thermostat can be connected to the boiler. The protection system of the device uses an automatic air vent and an overpressure relief valve. The case of this model has pleasant-looking rounded edges, which makes the design more modern and harmonious. E-Catalog uses affiliate links compensated by our partners. |
Bosch Tronic Heat 3500 24 23.76 kW
400 H
Energy source:electricity
Mount:wall, single-circuit
Boiler power:23.76 kW, area ~ 190 m²
Powerful and efficient electric boiler, which is characterized by convenient operation and a reliable heater. This model is the most powerful and productive in the Tronic line. The device has an electronic control system, which is extremely easy to set up thanks to the LCD screen. The key advantage of the model is the use of heating elements with a system of uniform load distribution.
Heating elements are made of stainless steel. The Bosch Tronic Heat 3500 24 electric boiler operates on the basis of a traditional single-circuit system. But in this model there is support for both heating and hot water. For additional hot water connection, a motorized three-way valve and an indirect heating tank are required. The device is already equipped with a circulation pump and an expansion tank. The programmer is responsible for setting the operating modes of the heating system. An additional room thermostat can be connected to the boiler. The protection system of the device uses an automatic air vent and an overpressure relief valve. The case of this model has pleasant-looking rounded edges, which makes the design more modern and harmonious.
All specifications
Specifications Tronic Heat 3500 24
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The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog Bosch 2026 - new arrivals, bestsellers, and the most relevant models Bosch.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog Bosch 2026 - new arrivals, bestsellers, and the most relevant models Bosch.
Model overview based on user reviews
The Bosch Tronic Heat 3500 12 is a reliable and efficient electric single-circuit boiler, ideal for heating smaller areas up to 95 m². It features a built-in circulation pump and expansion tank, and its advanced adaptive heater control system automatically adjusts the heating elements for optimal performance, enhancing their lifespan. However, it is entirely dependent on electricity availability, and its modern electronics may be sensitive to voltage instability. Installation requires a separate three-phase cable with a large cross-section. While some users appreciate its German engineering and reliability, others have experienced issues with circuit breakers tripping and the adaptivity not meeting expectations. The display is considered less informative compared to other brands, and accessing certain technical components can be challenging. Despite these drawbacks, it remains a popular choice for those seeking an electric alternative to gas heating.
Pros
Cons
Declared innovation of adaptability Technical imperfection use Bosch Tronic Heat 3500 24 more than year |
Gas heating is now an expensive thing, so I will decide to change my old, failed gas boiler to an electric one. Just using the example of the previous boiler, I was convinced of how important it is to make the right choice and not to strive for cheap models. That is why Bosch was my choice. Already one mention of this company inspires confidence in the reliability of the equipment produced by it. An electric single-circuit boiler is simple and reliable. This model has a power of 12 kW and is designed for heating not very large areas. It heats 92 square meters for me, and it must be borne in mind that last year I spent a lot of time, effort and money on wall insulation. But now I save on electricity. It already has a built-in circulation pump and expansion tank. And it is also equipped with an advanced adaptive heater control system that automatically adjusts the number and power of the included heating elements depending on the frequency of operation of the room thermostat. In addition, the electronics independently practice the scheme of alternating switching on of the heating elements, which prolongs their service life. The system is really cool, the Germans know a lot about heating systems) All electric heating is entirely dependent on the availability of electricity. We seem to be stable with this case, but I still had some doubts. Another problem can be the delicate modern electronics of the controller. From the experience of a friend, I know that with the instability of the supply voltage and its strong drawdowns, it is better not to rely on such smart boilers. And yet, be prepared for the fact that you need to supply power to it with a separate three-phase cable of a rather large cross section (8 square millimeters per core). |
I have 12 kW. It's a hassle considering that 16.5 kW is supplied to the house. It's a ridiculous model that doesn't allow limiting the kW load on the heating element, and the "brilliant" solution of having the heating elements work alternately will definitely give you a significant phase imbalance in your network. Of course, you can't turn this off. Regular boiler. The circuit breaker keeps tripping because of the boiler.  Dmitriy Prisyazhnyuk: use Bosch Tronic Heat 3500 9 few months |
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The display is not informative at all, even compared to Protherm. The method of mounting this display is at the level of cheap China.