In article ,
tony sayer wrote:
Some boilers have optional kist to manage the plume

"Easy to fit solution for the problem of plume providing increased
siting flexibility during installation Plume is a vapour trail that is
seen coming from the front, back or sides of a house when the flue gas
temperature drops below dew point. Plume is not harmful but can be
viewed as unsightly and a potential nuisance if it drifts across
neighbours properties or public areas.

Why is it a potential nuisance?..

On a cold damp day they could block the view from a window.

Just how much of a plume do some of these old boilers make?..

Not old boilers. Modern condensing types.

--
*Never miss a good chance to shut up *

Dave Plowman London SW
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