The VAILLANT ecoTEC Plus 635 is a high-efficiency 35kW system boiler designed for larger homes and properties with higher heating demands. This model comes complete with flue kit included, simplifying installation and reducing additional component costs.
Built on VAILLANT's proven ecoTEC Plus platform, the 635 delivers reliable performance with condensing technology that maximizes fuel efficiency and minimizes running costs. The system boiler configuration makes it ideal for properties with a separate hot water cylinder, offering flexible heating control and compatibility with various heating system layouts.
Key features include robust build quality, straightforward servicing access, and compatibility with standard heating controls and thermostats. The included flue kit ensures you have everything needed for proper venting and installation compliance.
Suitable for mid to large residential properties, commercial applications, and retrofit installations where system boiler performance is required
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