Wow nice reply on this one. I am leaning on the house being the issue. The home is only 14 years old and a two story with 1200 square feet on the main, 400 on the second, and 1000 on the basement. I have a foyer about 15 feet high in the front of the home (200 square feet maybe) and catherdal ceilings (300 square feet) in the family room. I do believe alot of heat rises there. The second floor atic has about 9-10 inches of celose and the rest of the main floor is about the same, not sure whats in the family room (catherdal ceilings). Fiberglass insulation in the walls, maybe R-19. I have been keeping the house 74 degrees. As I remember I went through 1200 gallons of propane last year with my indoor wood stove running at night and weekends (at 70 degrees). I do believe the furnace kicked on frequently also.
I am heating with green oak, maybe and cherry, I load about 5 to 7 6-8 inch logs anywhere from 2-3 feet long. Wood has set pry 4 months.
As far as the pvc having a leak in the joints I really doubt it, I pitched the line toward the basement so I could see if any water leaked in, so far no wet basement.
The little snow we had this year did melt above the lines, but at night it all freezes up again.
Not sure on the damper, the fan does make some strange noises once and a while, just have to hit the door and it stops.
From the boiler to the home I loose about 3-4 degrees, the differental is factory setting at 20 degrees I do believe, kicks off at 175 and on at 155.
As far as the bubble wrap Im not sure thats the best insulator I should have choosen in my current situation, Maybe I will spray foam around it next year or save up for the good stuff.