Vaillant Combi Boilers
The ecoTEC Sustain is built with ease of use, longevity, and low maintenance. This range of combination boilers features a high-quality stainless steel heat exchanger accessible from the front for easy servicing.


This design reduces repair time and costs, ensuring your peace of mind. Choose the ecoTEC Sustain for reliable and efficient performance.
Main Features
- High-Quality Heat Exchanger: Features a durable stainless steel heat exchanger designed for long life and easy maintenance.
- Improved Accessibility: Removable side panels and push-fit flue system ensure ease of installation and better access.
- Eco-Friendly Performance: Modulating low NOx burner and fan reduce emissions, supporting green credentials.
- Efficient Pump: The recognised Grundfos high-efficiency modulating pump uses low energy to deliver a balanced output, reducing energy consumption.
- User-Friendly Design: The new condensate trap with a safety backup is easily removable from the base for straightforward installation and maintenance.
- Clear Display: The large, illuminated blue LED display ensures easy reading and simple identification of fault codes.
- Renewable Ready: Compatible with the aroTHERM air-to-water heat pump hybrid system, making it a perfect entry into renewable energy solutions.
- Easy Replacement: Familiar footprint and flue position make replacing an existing ecoTEC pro with an ecoTEC sustain quick and easy; compatible with all existing Vaillant flue components.
- Versatile Controls: Compatible with a wide range of Vaillant room thermostats, both wired and wireless, including the vSMART™ app-based control with weather compensation for lower running costs
- .ErP A Rated: Suitable for refurbishment and new builds, ensuring lower running costs and high efficiency.


