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    mod/con with indirect or on demand water heater (2 Posts)

  • radmix radmix @ 4:52 PM
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    mod/con with indirect or on demand water heater

    Which is more efficient a Mod/Con With a side arm or a on demand water heater. My guess is the water heater with the condensing boiler.
  • kcopp kcopp @ 9:28 PM
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    A well insulated...

    Indirect would be my choice. The combustion Eff. numbers will also beĀ  a bit higher w/ the mod/con. Furthermore I am not a huge fan of having a boiler sit idle in the non heating season. kpc
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