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I can't figure out why my AC unit it blowing moist/humid air. It feels like every few minutes it's actually blowing straight AC but for the most part it's very damp. I checked the filter the other day which was extremely dirty so I cleaned it, replaced it and now the "Check Filter" light is on. Help! I can't stand how humid my room is!!!
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When the a/c starts blowing warm air, it's because the evaporator iced up and the ice is blocking air flow through the evaporator. Letting it sit allows the ice to melt, and air can flow through again. Humidity in the air is what is causing the ice to form. Most cars have a evaporator coil temperature detector to prevent this from happening. When you have the system serviced again, ask if they can check for correct functioning of this temperature detector.
fogging up occurs when the water vapour ( Humidity) in the cab air hits the cold windows Remove the humidity by running the ac in conjunction with the heater . AC units to make the air feel cold by removing the humidity in the cab air allowing you to perspire more easily and you feel cooler. By running to two together ( climate control in some cars) the fog will quickly disappear.
mcdevito75 here, It could be 3 reasons, First the lower the outside humidity the less cool air your A/C will blow out, 2 Turn off your unit for 10 minutes and re-start with fan only for the first 3--4 minutes then adjust for A/C. 3 Your unit needs serviceing, Freon charge.
Couple of things,
are your filters clean??? If not clean them
It also sounds like a lack of refrigerant, so get the system professionally checked and re-gassed.
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check capicitor on motor, fan motor bearings may be locking up when they get hot then when cooled the motor comes back on. Then you must replace fan motor.
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