low mass vs high mass boilers

[whburling]

Hi Folks,

I am attempting to make sense out of one characteristic of boilers, that being their mass.

I am attempting to understand the pros and cons
of the above two types of boilers. Can anybody
offer and advice?

My understanding (which is NOT from experience)
is that low mass boilers allow one to minimize
energy lost when the boiler stops. Obviously a
bonus is that hot water occurs sooner. Maybe
a "cost" is that the materials may not be as
rugged over time(?) and that design specs may
have to be better as the low mass boiler may be
more likely to bring about flue gas condensation?
(though if it was designed well (stainless) then
this might bring about a significant boost to
efficiency?

any further comments? I welcome them

[jeff]

go to heatinghelp.com then go to the wall then ask your ? they will help you a lot jeff