wrote in message
...
After having a new oil-fired hot water boiler installed, I’m
considering the value in replacing some of my convector radiators with
cast-iron. But, not sure if it's worth the hassle. Which would feel
more comfortable and/or be cheaper to run in the long run? For
example, convectors require shorter more frequent boiler firings to
keep the temp steady in the house. And although cast-iron radiators
require longer boiler firing time to heat up, they stay hot longer.
Sounds like it’s an even wash either way, but your comments are
appreciated.

-Theodore.

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Only some? If they are on the same zone you can wind up with uneven heat.
While I personally like cast iron radiators for the heat retention, I'd not
bother with the change. I don't see any energy savings as a Btu is a
Btu,but there may be a little comfort difference in some places if you have
any drafts.