I would guess that modifying the duct work in a 1920s masonry construction home will be prohibitively destructive and involving removing or damaging irreplaceable trim that contributes to the building's character.Īn alternative, which will not be inexpensive but may be significantly less destructive, would be investigating installing a multi head mini split ac unit with one head in each bedroom. First floor is open, stairs are open both upstairs and down, and another image showing the upstairs bedrooms is included. All of the vents are on or near the floor. The only exception is the overlapping pink and blue vent, where a single branch has a first floor and second floor vent. The blue rectangles are first floor vents branched off of the trunk in the basement, and the pink rectangles are second floor vents also branched off the trunk in the basement. I have read conflicting reports about whether adding an upstairs supply or return would provide any benefit, and that closing off registers can cause issues.īelow is a quick and dirty diagram of my HVAC system. Add another upstairs supply duct (in front or middle bedroom).Add a second floor return duct (in front or middle bedroom).
Airflow performance boost pump install#
Install dampers / new registers on first floor to restrict airflow there.What remedy / remedies would provide the most benefit? Feasible remedies I can imagine are: This definitely helped reduce the severity of the issue, but there is still room for improvement. Thinking it was a insulation issue, I had a cellulose blown in the attic a few years back, as this post suggests. There is a single 11"x13" return vent at the base of the stairs on the first floor. One of the first floor vents is on one of the three ducts leading upstairs. I live in a 1920s masonry row house that has one vent going to each of the three upstairs bedrooms and four vents on the first floor. I have a forced air heating and air conditioning system that performs poorly on the second floor: It is way too warm in the summer and a little too cold in the winter.
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