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  1. #14
    Join Date
    Feb 2002
    Location
    Houston Tx
    Posts
    344
    The gurus will tell you that all windows have a certain amount of leakage, one house that was ICF had no make up air on it due to window leakage. I have never measured it. But with a exhaust from bathroom and cooking the BAd air is going out. humidity levels stay at 50 % living so close to the coast that bringing in 80 % air into my 50% and then cooling it more makes it uncomfortable and costly

  2. #15
    Join Date
    Jun 2003
    Location
    Madison, WI/Cape Coral, FL
    Posts
    6,636
    Quote Originally Posted by slice View Post
    The gurus will tell you that all windows have a certain amount of leakage, one house that was ICF had no make up air on it due to window leakage. I have never measured it. But with a exhaust from bathroom and cooking the BAd air is going out. humidity levels stay at 50 % living so close to the coast that bringing in 80 % air into my 50% and then cooling it more makes it uncomfortable and costly
    On the surface, you have the perfect home. Perfect because you have none of that high humidity outside air coming into your home. This is most a/c contractor's dream. But a word of caution. All homes need a minimum air change of fresh air. The amount is more than infiltrates through your windows and exhaust your bath fan. From your description, you air change rate may be less than one air change in a day or two. Compare this to EPA, Am Medical Ass, AM Lung Ass, ASHRAE etc recommendation of an air change in 3-5 hours. You should confirm polluntant and oxygen levels before long term exposure. Are you interest in testing with CO2 meter to confirm air change rate? Could loan CO2 meter under right conditions. Regards TB
    Bear Rules: Keep our home <50% RH summer, controls mites/mold and very comfortable.
    Provide 60-100 cfm of fresh air when occupied to purge indoor pollutants and keep window dry during cold weather. T-stat setup/setback +8 hrs. saves energy
    Use +Merv 10 air filter. -Don't forget the "Golden Rule"

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