Vaillant Heat Pump Upgrade – Oil Boiler Replacement Elite Services Group recently installed a Vaillant heat pump, replacing an old, inefficient oil-fired boiler with a modern renewable heating system. By carefully designing the system to work with the existing radiators, no radiator upgrades were required, helping to minimise disruption and installation costs. The homeowner is now benefiting from low flow temperatures, strong long-term return on investment, and a significantly reduced carbon footprint.