Hey folks,
As mentioned in my other post, I am replacing my natural gas boiler in my 30 year old house in Massachusetts. I have 3500 sq ft of heated space and it uses baseboards. My slant fin heat loss calc shows 65k loss at 20 degrees outside and 89k at 1 degree outside with 180 design temp. I have gotten a few quotes and all highly recommend I go with a mod/con. My leading quote if for a Weil Mclain WM97+110CT. In my research I have found many posts say that mod/cons don't have the advertised savings when dealing with baseboards, because baseboards are high temp, so it will rarely be condensing. There may be some savings due to the modulation, but when you factor in maintenance, modulation alone probably won't be realized.
So, what's the truth? Do Mod/Cons still make sense if you have baseboards in a large house?
Thanks!
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