The Vaillant VRT350 monitors room temperature and adapts the boiler to suit. This ensures your boiler will operate at maxium effciency and help reduce your energy bills. The VRT 350 features a blue backlit display, and just two easy to use push buttons to help easily control the 3 independant time settings.
Suitable for use with Vaillant ecoTEC boilers (extra controls required for System & Open Vent boilers).