Fully functional, taken from a working combi boiler in replace for an air source heat pump!!! The Worcester MT10 Mechanical Timer 7716192036 is a white storage tank water heater with a brass lining, designed for use with gas heating systems. With an energy efficiency rating of A+++, this compact unit features a timer function and a voltage of 220/240V. Manufactured in 2023 by the reputable brand Worcester, this boiler has a first hour recovery rate of 204 litres per hour, making it suitable for household heating and hot water needs.