"Return "duct work" is not the issue--free flowing paths back to the unit are. You probably had some air bypassing any filters but that would not likely do any real harm. If the unit is central and each room has enough…"
"If the improvements add an average of 5% to the value, what % of the home's value did the upgrades cost? I realize that is not the whole picture but it is the most important aspect of considering the value of the improvements. The…"
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