The ecoTEC Plus 435 high efficiency heat only boiler is one of the one of the best models available today within this category. Offering compact dimensions, versatile siting and ease of installation, its a perfect upgrade for a traditional open-vented heating system combining superb efficiency and high performance with great usability.

• Compact dimensions and stylish design
• Excellent siting versatility and easy installation
• Push button programming for ease of use
• Comprehensive status and diagnostic information
• Built-in two stage frost protection
• Compatible with the full range of Vaillant accessories
• Standard 5 year warranty extended to 7 years when installed by a Vaillant Advance Installer