Simple to install and easy to operate, the ecoTEC Plus 424 high efficiency heat only boiler is one of Vaillants most compact and versatile boilers. It presents the ideal upgrade solution for a traditional open-vented heating system, providing fantastic efficiency and superb performance along with good looks and 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 when installed by a Vaillant Advance Installer