I bought a 1937 Tudor home. I had the misfortune of following a contractor's advice and getting rid of my steam system. No idea how well it worked since the replacement happened before I moved in. But I know now that steam is the best heating. I scrapped a plan for HVAC and decided to go with hot water heating (under the floor staple up radiant and cast ray recessed rads upstairs - all the emitters were formerly cabinet convectors).
this past winter was my first in the house. The hot water system on the second floor didn't get warm enough on the extreme cold days (under 20 degrees F).
I have had 2 energy audits. Both companies said it was imperative to add insulation. Attic can be done relatively easily. But the outside walls I am troubled with. These are plaster walls with little insulation now. There are a lot of comments and articles that say stay away from cellulose blown in insulation. Issues include moisture accumulation and eventual sagging of the insulation. But both energy contractors are telling me that this won't happen. they will pack in the insulation tight so it can't drop. But what about the moisture accumulation? Bob yapp has a blog that talks about these perils and eventual termites from the moist insulation.
Has anyone here blown in insulation into a very old house and not had issues for at least a few years? Any advice would be appreciated. I already got screwed from following the first contractor's advice. I can't afford to be uninformed again.