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A neighbor is facing imminent boiler replacement and is looking for guidance. While I have researched steam systems for our own home quite a bit, I know much less about hot water boilers.
One contractor has recommended a Burnham MPO. From the Wall I know this boiler is generally well regarded, but I wondered- why not a mod con?
In my limited understanding (or perhaps misunderstanding) a mod con can add efficiency but also adds complexity. There also seem to be some doubts as to the real savings associated with mod con technology. Any rules of thumb or words of wisom to impart? Should they look into a mod con? What mitigating factors would affect such a decision?
Related: they are currently using an electric water heater while their boiler is busted and are wondering about adding an indirect with the new boiler. It's been suggested that adding the indirect with the new boiler will be cheaper than adding it later, but they're reluctant to ditch a perfectly servicable electric heater that has more life to live. Thoughts?