Quote:
Originally Posted by hayden55
Yep. See it a lot. Well if you don't see main dampers you will need to add some either way new system or not. Track your legs and get a feel where they go and spend $200 bucks on some dampers and add them in one weekend.
Realistically if the upper house is one run you just need one damper
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What's the difference though besides where in the system receives back pressure?
I'd need to control both top and bottom ducts because I need more cooling upstairs in the summer than downstairs. In fact, if there was no cooling downstairs it would still remain cooler than upstairs. Same with heating. If I diverted all heating downstairs, upstairs would still end up being warmer.