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Old 08-01-2013, 02:01 PM   #1
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It rains under the dash ??

We just back from our first trip through the Southeast and up the Eastern seaboard. One day my wife tells me, "it's raining on her feet". I pulled over to a rest stop later, and as she prepared lunch, I crawled under the dash for a looksee.
I noticed that everyone of the AC Duct hoses was wet on the outside with BIG drops of water forming along the bottom sides, which would rain on her feet as the drops got BIGGER, or as the vibration dislodged them.
I grabbed a towel wiped off the hoses, and did the same to my side under the dash. This continued each day until we got back out further west on our way home, and the humidity decreased.
My opinion, is that the humid air, cooled by the AC, caused the condensation.

My questions..

Do others experience this, and what do they do about it?

Should I carry a couple of dehumidifiers in the coach?
Or just keep a towel handy?

It's just a bit annoying.

This doesn't happen in passengers cars does it?

Or, is that the water on the ground outside under the car when you stop, because of the way it's vented?

Thanks!!
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Old 08-01-2013, 05:26 PM   #2
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Steelhorzz

I just finished a 6,000 mile trip and while in the humid states I was using the AC all the time while driving. I think the system is so good and with the high humidty cause frost/moisture to build inthe ducts.
Some place in time it starts melting or leaking thru the ducts.
I had it on both passenger and drivers side. It seems to started quickly at one time and after a few towels to soak up the water it was back to normal and no water.

So now we have 2 of us who had the drips .
Now we have to hear other opinions why this happens.

Yes the water on the ground is the coils melting the ice that has formed on it. This is normal.
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Old 08-01-2013, 07:50 PM   #3
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Originally Posted by Iggy View Post
Steelhorzz

I just finished a 6,000 mile trip and while in the humid states I was using the AC all the time while driving. I think the system is so good and with the high humidty cause frost/moisture to build inthe ducts.
Some place in time it starts melting or leaking thru the ducts.
I had it on both passenger and drivers side. It seems to started quickly at one time and after a few towels to soak up the water it was back to normal and no water.

So now we have 2 of us who had the drips .
Now we have to hear other opinions why this happens.

Yes the water on the ground is the coils melting the ice that has formed on it. This is normal.
My 2011 350 TS leaked in the passenger floorboard on a recent trip to Myrtle Beach. Only did it once. My AC would also stop blowing cold air sometimes. It did it one time so I turned the fan to high and it blew water out of the defrost vent on the passenger side.
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Old 08-01-2013, 11:24 PM   #4
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Check yr ac, must be freezing up due to low freon
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Old 08-01-2013, 11:30 PM   #5
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Check yr ac, must be freezing up due to low freon

As far as I know it really is a great AC unit and cools very well.
Don't think it would be low on freon and keeps me cool in Arizona at 110 degrees.

Again this issue only happened once after running all day down the road in very high humid weather.
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Old 08-01-2013, 11:50 PM   #6
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Check yr ac, must be freezing up due to low freon
Yep, low refrigerant can cause the evaporator to freeze up causing an icing condition and water where it shouldn't be. Can also cause an interment period of less than cold air from the ducts. As the pressure drops the compressor should start cycling off on the low pressure cut-out safety.
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Old 08-02-2013, 12:29 AM   #7
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Yep, low refrigerant can cause the evaporator to freeze up causing an icing condition and water where it shouldn't be. Can also cause an interment period of less than cold air from the ducts. As the pressure drops the compressor should start cycling off on the low pressure cut-out safety.

Good information. Hopefully we can keep this thread going as we have very little information about the dash AC.

I know it is NOT part of the FORD Chassis and it seems to be an EVANS unit.
Now how to find out how many oz of R143a it holds would help.
Anyone out there have any work done on their dash AC?

Any help or documentation would be helpful.
Has anyone used Artic Freeze Freon R134a out of a can?

Thanks
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Old 08-02-2013, 08:44 AM   #8
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OK, Ours does the same in really hot/humid conditions, but really not that often. I found that it is produced on the outside of the air ducts on the passenger side at the wife's feet. I believe that the water comes from the humid air in the coach hitting the cold air duct and causing condensation. The first time it happened we were traveling in a strong rain storm and I thought that we had a massive windshield leak. But it happened again a couple of days later in bright sunshine. So...no windshield leak, just condensation.
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Old 08-02-2013, 09:16 AM   #9
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OK, Ours does the same in really hot/humid conditions, but really not that often. I found that it is produced on the outside of the air ducts on the passenger side at the wife's feet. I believe that the water comes from the humid air in the coach hitting the cold air duct and causing condensation. The first time it happened we were traveling in a strong rain storm and I thought that we had a massive windshield leak. But it happened again a couple of days later in bright sunshine. So...no windshield leak, just condensation.
That was my original thought. I will check and see if it does it on next weeks trip to hot, low humidty Las Vegas.
If it still does it there and if I have any money left I will then have it checked.
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Old 08-02-2013, 09:27 AM   #10
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Ford A/C compressor

On our 2011 378, we had the a/c compressor replaced underwarranty thru Ford. They prep the chassis, but the ductwork, fan, etc is Evans. Ours drips water occasionally, usually on AC MAX.
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