Here's something I never understood. Why don't they put the shut off's for the vents right as they are coming out of the main vent, instead of halfway down the branch? Wouldn't that stop it from accumulating too much pressure and wouldn't drag heat down one of the branches?
The inline duct fan that I use works great Daox. The one I put in for the living room. You can totally tell the difference when I turn it on, it makes the room liveable. Now I just need to see if I can get the furnace guy in to see if he can hook it up to my furnace so that it turns on when my furnace turns on. Although I'm not sure if that would actually help you. The thing I would do would be to add 2 or 3 more big pipes to the main floor to take away fromt the upstairs ducts. So put a second one in the living room and another in the kitchen. Redirect that heat to your main floor before they go to the upstairs pipes.
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