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    blueone7's Avatar
    blueone7 Posts: 2, Reputation: 1
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    #1

    Jul 19, 2011, 03:46 PM
    coleman presidential ii condensation is on the vents
    Just moved into a 14x70 mobile home and have noticed the vents have condensation on them. What causes this and how can I stop it?
    twinkiedooter's Avatar
    twinkiedooter Posts: 12,172, Reputation: 1054
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    #2

    Jul 19, 2011, 04:13 PM

    There is too much moisture inside the home or the air temp is too low coming out of the vents. Try using a dehumidifier and that will help draw out the excess moisture. Also, try using some foam insulation tape around the doors and windows as the a/c will be drawing in hot, moist air from outside when it runs. I have my house tighter than a drum and my a/c runs much less since I sealed up all the light fixtures in the ceiling, caulked all the windows inside and outside and taped up the skirting where there are vent holes (cheaper than redoing with solid skirting - I used white duct tape). I also used a plastic 6" edge between the bottom of the skirting and the ground. I screwed it into the bottom rail and packed dirt on it so no outside air could get in under the home. Believe it or not my house is cooler since I blocked off the bottom of the skirting. I also went around the house and sealed up any small cracks outside as well on the vinyl siding. I don't open my windows ever, summer or winter as they are all permanently sealed now. My house stays warmer in the winter as well. There is a trick to keeping your MH cooler and warmer, it just takes a bit of time. Also, you might want to go around the roof line where the roof meets the side of the home and tar and tack down those shingles. We did that all up one side and down the other side and that made it warmer in the winter as well. Also made the shingles more wind resistant as well.
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
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    #3

    Jul 19, 2011, 04:41 PM
    Yep, TD is right, too much humidity for the temp and you are reaching the dew point. Better insulation, install a dehumidifier, raise the temp a couple of degrees. This is not uncommon in very humid areas of the country and always in the summer. Not to worry too much but something that should be addressed before registers start to rust.
    blueone7's Avatar
    blueone7 Posts: 2, Reputation: 1
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    #4

    Jul 20, 2011, 08:39 AM
    Thanks. I will address these things and get back to you. I appreciate your help.
    twinkiedooter's Avatar
    twinkiedooter Posts: 12,172, Reputation: 1054
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    #5

    Jul 20, 2011, 10:20 AM

    I've lived in my mh for 9 years and am still finding more tricks to keeping out the outside air. Don't forget to get under the kitchen sink and bathroom sink and use the expanding foam and seal the holes where the water pipes come up through the floor. Also get under the bathtub and do the same there as well. You'd be shocked at how much air comes in in those places.

    Also if your home has shutters like mine does I would suggest you take off one shutter and see how it is attached to the home. My home is all electric and behind each shutter where it connected to the house was a large 3" circle cut out of the outside vinyl siding. I filled each one of these holes with caulking and my house was much warmer in the winter.

    There are also problems with the belly membrane under the home also. You need to go under the house and see if there are any rips or tears in this membrand and then fix the tears, rips with special belly tape available from mh supply houses or online. You can't use just regular duct tape as it won't hold (tried it, doesn't hold). The special tape is super sticky and you need to use a hair dryer or heat gun to properly set it in place. The holes under the house are important as well to block up.

    I've listed just about everything I've done to my home over 9 years and now my electric bills are lower than ever.

    If you have a natural gas furnace you can't really seal your home too tightly like you can with an electric furnace due to the carbon monoxide problems.

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