I'm looking into purchasing these, but wanted to get some confirmation on if these system will fix my problem. I have a two story house with 8 total vents. 5 on the first floor and 3 on the second floors. The upstairs is way too hot during the summer while the downstairs is a comfortable temperature. Would a Flair system be a good way to balance out the temperature between floors or is that asking too much? Manually blocking off all 5 downstairs vents does help, but after some reading it sounds like blocking 5/8 vents might not be the best thing for the ac unit.
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