General   (General discussion, talk about anything.)

actually Gaffer I replaced one of the motorized valves for you and, Although its not part of the boiler, It is part of the heating system which would be an internal part of a combi and I know you get it serviced regularly which also costs money, your old Glowworm would run on and on without servicing but. I take your point, It is lighter, cleaner and what you save in gas, will not match what you spent in servicing