A/C vents that really seal when closed?
Old Man Winter came back to New England last week, and immediately reminded me that the A/C vents in my house (all in ceilings, spec house build in ’99) don’t really seal up tight when closed. I’m reminded of this by condensation forming in some of the ducts, especially the ones that serve high humidity spaces like bathrooms. It’s a pretty good bet that this is also costing me money in the form of heated air escaping.
The ductwork is insulated steel trunks with flex to all the vents (which are ” square). Since the flex duct sags, the low point is usually somewhere in the middle of the run, which is resulting in a steady drip in one spot.
During the summer, I spent some time sealing up a fair number of leaks in one of the two zones, so there are probably still a lot of leaks. Still, I think what I really need is a higher quality vent that really seals up when you close it, if such a thing exists. Can anyone recommend one?