Ed Sirett wrote in news: snipped-for-privacy@makewrite.demon.co.uk:
It appears to me that this person has had the benefit of having a newer boiler than everyone else for some time. Unless everyone has their boilers replaced at the same time it is inevitable that for some of the time they have a newer boiler and for the rest of the time they have an older one. I don't see this as unfair - just life.
The second set of disruption that the OP mentions may or may not be significant. However we have no idea whether this is likely within the next few months or could be ten years off.
Rod