eplacingMoving parts such as water pumps and water valves or gas valves will wear while gas jets and thermostats can become inaccurate or stop working due to thermal stresses and oxidationBoilers Repaired LincolnOld Boiler System out of WarrantyIf your boiler warranty has lapsed and you would like an estimate to continue servicing your existing heating system or upgrade to a combi boiler simply contac