Vaillant auroTHERM Solar Thermal System installed last week in Berwick-upon-Tweed. The system, comprising of Vaillant 18 tube/3m2 solar collectors, Aurostar 260ltr twin coil cylinder, Vaillant Ecotec plus 618 boiler and intelligent VRC 470 weather compensating controller provides solar heated domestic hot water to a 4 person bungalow. This set up is […]