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Old 03-15-2013, 03:11 PM   #15
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I would suppose that amount of use would play into the answering of that question but I would have to think that replacing the units outright would be a costly and probably unnecessary option. Before you went that direction, I would actually have your ac units serviced and evaluated. Find out about how to clean the ducts and then see how it goes. Not all my vents blow equally strong either. What I tend to do is to close those vents that I don't need so that air is redistributed to the other vents where I do need the air flow. It makes a noticeable difference in how much air seems to come out of any one vent.
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Old 03-15-2013, 04:55 PM   #16
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No way I'd be changing them out as long as they worked and most sure they have nothing to do with the air flow anyway. Just wondering if the fans are set on low, instead of auto or high. Doubtful though, unless the unit fans run continuously.
I have all the vents in the bedroom and bath shut off completely, which puts a lot more up front and where it's most needed. Still cools the bedroom just fine.
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Old 03-15-2013, 07:34 PM   #17
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I'm with these guys! If you’re not hearing a lot of noise from the fans than they are probably fine. You could check them and insure the set screws are tight and not slipping on the shaft which could cause reduced air flow, but I'll bet if you have a problem at all its debris in the ducting. Those ducts are pretty large for dust to be clogging them. I often close the vents in the end of the coach were not using at the moment when on 30 AMP or just running one unit.
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