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  1. #53
    Join Date
    Nov 2004
    Location
    Austin, TX
    Posts
    884
    Air leaking from the AC system into unconditioned space will result in air being pulled into conditioned space from outside to make up for the loss of air. It will just seep in from the points of least resistance such as doors, windows and voids in the building structure. The air will drag in whatever heat, moisture, pollen, dust and other pollutants it comes across. I'd suggest sealing that leak, every little bit adds up. A duct leak of 15% of the conditioned air will result in a 25% higher energy consumption for cooling and heating.
    “I am for doing good to the poor, but...I think the best way of doing good to the poor, is not making them easy in poverty, but leading or driving them out of it. I observed...that the more public provisions were made for the poor, the less they provided for themselves, and of course became poorer. And, on the contrary, the less was done for them, the more they did for themselves, and became richer.”
    ― Benjamin Franklin

  2. #54
    Join Date
    Sep 2012
    Posts
    373
    Quote Originally Posted by RyanHughes View Post
    Let us know how the system performs when you get the Prestige IAQ installed, configured to control both stages properly. I think there will be a difference. CPH for high and low stage heat can be set.
    It's been a few days since I've been on this thread, but I was able to lower the cph setting down to 3 for the furnace and so far this increased the run time by at least 2 minutes. This also helped balance the temperatures in all the rooms upstairs. When we do get the IAQ thermostat installed, I'll make sure the cph setting is lowered in both low and high stage.

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