Q: I inherited a concrete block building that was then converted into a home several years ago. Part of it has a crawlspace and part is on a concrete slab. The crawlspace is always damp, and the ...

Q. I live in a 1,000 square foot house to which an addition was added several years ago. The bathroom and bedroom in the addition are always cold, as they are the rooms farthest from the furnace.

Q: I had a home-energy analysis. The report said my ductwork needs to be repaired upstairs and in the crawlspace because that is where a good deal of leakage is and also is bringing bad air pollutants ...

A common idea promoted across the industry is that any heat lost from an uninsulated duct system to a conditioned space isn’t truly lost and has no effect on energy consumption. Most contractors would ...