Vaillant ecoTEC pro VUW INT 346/5-3 28 kW
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Vaillant ecoTEC pro VUW INT 346/5-3 28 kW
Energy source:gas
Mount:wall, dual-circuit
Boiler power:28 kW, area ~ 224 m²
Combustion chamber:closed, flue 60/100 mm
DHW temperature:up to 65 °С
Highly efficient German double-circuit gas condensing boiler of increased power with a turbocharged combustion chamber and a microprocessor control system that supports the connection of external control modules with the eBus bus. It is positioned as a product of the upper price category, aimed at demanding users who prefer reliable and durable climate solutions from time-tested European brands.
The key feature of this model is increased energy efficiency, which is ensured by using the condensing principle of heat extraction from combustion products. Unlike traditional gas appliances, in the Vaillant ecoTEC pro VUW INT 346/5-3 boiler, flue gases undergo deeper cooling, which makes it possible to extract and usefully use the latent heat of condensation of water vapor. This technology makes it possible to demonstrate 6-8% better energy efficiency, which has the most positive effect on gas company bills. The declared useful power of 28 kW is enough to organize the heating of a cottage, a large city apartment, a utility or office space with a total area of up to 224 m².
All specifications
Specifications ecoTEC pro VUW INT 346/5-3
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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 Vaillant 2025 - new arrivals, bestsellers, and the most relevant models Vaillant.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog Vaillant 2025 - new arrivals, bestsellers, and the most relevant models Vaillant.
Buy Vaillant ecoTEC pro VUW INT 346/5-3 28 kW
All prices 20 →Газовий котел Vaillant ecoTEC pro VUW INT 346 /5 -3 | 70 193 ₴ |  | |||
| 69 422 ₴ |  | ||||
Двоконтурний конденсаційний котел Vaillant ecoTEC pro VUW INT 346/5-3 (0010048118) 0010048118 | 78 900 ₴ |  | |||
| 69 816 ₴ |  | ||||
Котел газовий конденсаційний Vaillant ecoTEC pro VUW INT 346 /5 -3 0010048118 | 71 020 ₴ |  | |||
15 more offer(s)
Series Vaillant ecoTEC (wall-mounted condensing)Compare using chart →
gas, condensing, power 18.5 kW, area ~ 148 m², wall, dual-circuit, closed, heating: up to 148 m²
gas, condensing, power 28 kW, area ~ 224 m², wall, dual-circuit, closed, heating: up to 224 m²
gas, condensing, power 24 kW, area ~ 192 m², wall, dual-circuit, closed, heating: up to 192 m²
gas, condensing, power 18.5 kW, area ~ 148 m², wall, dual-circuit, closed, heating: up to 148 m²
gas, condensing, power 24 kW, area ~ 192 m², wall, dual-circuit, closed, heating: up to 192 m²
Here again they started talking about the future rise in the price of natural gas, and once again I was glad that last year I replaced my old gas boiler with this model. After all, efficiency is by far one of the most important points for any household appliance. And in this parameter, this boiler is simply magnificent. First and foremost, I was attracted by the fact that Vaillant is a private German company and the most critical parts of this double-circuit condensing boiler's construction – the heat exchangers – are made not just anywhere, but in Germany. However, the main advantage of this model lies in something completely different. In addition to high power (up to 28 kW), it boasts outstanding efficiency. This is achieved through a more complex and well-thought-out design, which includes two stages of heat transfer. First, the water is heated by the hot combustion products of the gas, and then these same flue gases are cooled to the temperature at which the contained water vapor begins to condense, releasing even more heat. As a result, the actual savings compared to a conventional boiler are around 7-8%. I heat approximately 158 square meters, and the savings on such an area are quite significant. The boiler is equipped with a convenient digital control unit that can be integrated into a "smart home" system and has a forced draft for combustion products. It is necessary to divert the condensate, and up to 1.5-2 liters per hour is produced. The claimed efficiency of 107% is purely a marketing gimmick. Every schoolchild who has somewhat paid attention to their physics teacher knows that the efficiency cannot be 100%. What "marketeers" consider as 100% is the efficiency of a regular boiler. The real efficiency of condensing models does not exceed 96-97% in any case, and in household models, it's impossible. |
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Vaillant ecoTEC pro VUW INT 346/5-3 configurations
| Price for Vaillant ecoTEC pro VUW INT 346/5-3 | ||||
|---|---|---|---|---|
 | Vaillant ecoTEC pro VUW INT 236/5-3 18.5 kW | from 64 900 ₴ | 24 offers | |
 | Vaillant ecoTEC pro VUW INT 286/5-3 24 kW | from 68 009 ₴ | 24 offers | |
| Vaillant ecoTEC pro VUW INT 346/5-3 28 kW | from 65 000 ₴ | 20 offers | |
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