As you may have seen in one of my posts in central heating forum - I know quite a few electricians, that either haven't a clue (maybe they like us to think this) or they don't like working on heating systems. For example installing, room thermostats, programmers, three port valves etc.
I've had a few jobs where programmer's need renewing or rewired and they tell the tenant to get a heating engineer. Then I go and do the job. With it being nothing to do with the gas side of the installation I can't see why they wouldn't/couldn't do this type of work.
Is there a reason for this, is it alot different compared to other work for example installing sockets and lights ?