The Vaillant ecoTEC plus 400 high efficiency heat only series is one of the most compact and versatile boiler ranges ever developed by Vaillant. Easy to install and operate, they offer the ideal upgrade solution for a traditional open-vented heating system, providing fantastic efficiency levels and high performance with great useability. It's compatible with the full range of Vaillant's flue and control ranges, and comes with a 5-year guarantee, upgradeable to 10 years when registered through Vaillant Advance and fitted with a Vaillant branded filter, giving customers complete peace of mind.

• Highly efficient and economical to run with up to an 89.2 Percent efficiency rating SAP 2009
• Push button programming makes usage straight forward and easy to use
• Built in two stage frost protection to ensure optimal performance all year round
• Push-Fit flue system for greater installation flexibility
• Compatible with all Vaillant controls flexible controls options which offer energy efficient solutions and the possibility of smart phone control giving a total system solution all available from one manufacturer
• Wide modulation range of up to 1:6 ensuring low energy consumption and maximum efficiency
• Rear flue option provides flexibility enabling installation of the boiler in virtually any situation
• Large backlit plain text display delivers clear visibility in poor light conditions and easy reading of current boiler operation and status
• Removable side panels for increased accessibility during installation routine maintenance and repair work
• Impressive 5 Years guarantee which is extended to 7 Years for all Vaillant Advance Installers for total peace of mind