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Old 01-23-2022, 07:13 AM   #1
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Powder blowing from dash ac vents (oxydation of evaporator?)

I need help.
I am the owner of an 2022 Entegra Vision 27a, I bought Oct 21 with 1500 miles, now 2350.


Problem: white powdery stuff blowing out of the AC vents of the Coach (chassis – hot house air). Its not fiberglass or any any other debris blowing out of there, it kind of dissolves between my fingers. I am really getting concerned about my health now, those particles get into my eyes causing itchiness and redeye – I do not know what inhaling does.

Have been at the dealership in Fort Myers with that problem among others; Invoice said “unknown cause, cleaned area”. (They didn’t even clean!)

I did a lot of research on the internet and found quite a bit of interesting information, especially Entegra is mentioned often with exactly that kind of a problem indicating it is a A/C evaporator (aluminum) corroding. Seems to be not a a common issue but happens often!

I called Entegra CS and Jeff told me he never heard about this problem, so it can't be and advised me to write an email to CS.
I did and have attached a file with research from the internet and so far did not get any response .I even attached a picture what it looks like - like a snowstorm!

one example:

This is on brand new 19's with zero age on them. That is the problem, they are leaving the factory with deteriorating coating on the coils from what was explained to me. It has been going on since 2016 as reported by other owners....why 3 model years still leaving the factory? It's not hard to see on an inspection. Not only Entegra, but my Newmar neighbor had the same problem on his 16, so bad it was getting in his eyes while driving.

Did anybody else experience that problem? Any help would be greatly appreciated!
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Old 01-23-2022, 07:30 AM   #2
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I had the same thing on my 19. When I drove in home from delivery in Atlanta it look like it has snowed in the cockpit. I called Entegra and they told me the coils had to be changed. I didn't keep the 19 long enough to have it done. There is no other cure and Entegra does know of the situation. Here is a post with others that had the same problem.
https://www.irv2.com/forums/f278/whi...ac-395208.html
The 21 with all of the same components is snowflake free, not the first one.
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Old 01-23-2022, 07:36 AM   #3
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There's a few reasons why your A/C might produce some "dust." Not all of them are bad, but enough of them are that you want to figure it out and fix it if you need to. Some car manufacturers had this same type of issue come up in new vehicles. They had different sources and the fix depended on the cause. Can you collect some? Have it analyzed. It might be nothing, but if it is something, knowing what is causing the dust will point you to what the problem is if there is one. Good luck.
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Old 01-23-2022, 07:45 AM   #4
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and Entegra does know of the situation

Nice to hear that, thats why the customer representative told me "never heard about it, it cannot be".
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Old 01-23-2022, 07:55 AM   #5
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Quote:
Originally Posted by Loefflerh View Post
and Entegra does know of the situation

Nice to hear that, thats why the customer representative told me "never heard about it, it cannot be".
That quoted post in your OP was from me and one of my neighbors at my storage location with the Dutch Star.

In the past Entegra has been very good at accepting posts on this forum forwarded to them. They are good at matching us up to our ownership names and can see first hand the number of complaints on files. Entegra does watch this forum and they do know what owners are saying. They really do work to correct problems.
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Old 01-23-2022, 08:11 AM   #6
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Powder blowing from dash ac vents (oxydation of evaporator?)

Since I’ve dealt with this issue on a few coaches and spent a good portion of my career in the mobile hvac business, I can tell you it’s not corrosion. I don’t know what it is for sure but it will eventually go away totally. My guess is that it is residual powder from the manufacturing of the flexible ducting that delivers the air to the vents. It’s a pain in the butt to clean constantly but it has no lasting effects. It will stop after about 6 months of use.
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Old 01-23-2022, 10:14 AM   #7
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Thanks Gary - I was hoping you would chime in and share your experience/expertise on this question.
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Old 01-23-2022, 05:11 PM   #8
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Does it look like the picture below?

Like Gary, ours finally went away. Though in our case it took 10-12K miles. Its a pain and yes sometimes it looks like it is snowing. Other times never noticed it in the air, but I was covered in it at end of the day.

In our case, the snowing episodes seemed to happen the first thing in the morning, the day after driving with the AC. I believe the flakes stuck to the coils while wet then when the coils dried out overnight... be ready for a snow storm.

I did have some luck changing to floor heat position for the initial startup in the mornings. Didn't stopped it, but slowed down the snow events, (a little).

Steve
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Old 01-24-2022, 08:40 AM   #9
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Yes - exactly like that, everywhere on the dash and side panels!
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Old 01-25-2022, 02:23 PM   #10
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Well darn, welcome to the club!

Entegra CS does know about the issue, at least PJ does.

CS scheduled for the entire dash AC to be replaced during our 2 yr PDI. However since it stopped "snowing" prior to then, I cancelled the replacement.

Steve
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Old 02-06-2022, 06:13 AM   #11
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Well, my coach was finally in the dealership for 6 days to look at my "dust" problem and other things.
No success. Service advisor said earlier they will dismantle the dash, clean everything thoroughly and look and the coils. Got an email, we did detail cleaning no more snow flakes, coil looks good.
When I picked up the coach cockpit was covered in white particles! The "detail cleaning" was holding a vacuum cleaner against the vents, not taking the dash apart. "must have happened when we moved the coach to the front"

Question: Is it possible to check the evaporator coil without looking underneath the dash?

Driving home it got worse - everything is covered in those snowflakes.
After a long discussion I got the verbal commitment from the service advisor he will order a new evap coil which will take weeks, if not months....
Hans
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Old 02-08-2022, 04:10 AM   #12
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Evaporator Coil

I had the same problem with white powder on a 21 Anthem. The problem did not go away with use, but may have diminished somewhat. It was the coating on the evaporator coil that was deteriorating. The solution was replacement of the coil. That is on a spartan chassis so the AC components may be different on a Ford chassis (I don't know). The AC work was done by Pro Air (formerly Evans Tempcon). As I said your case is a little different. Maybe Ford has better information about their components.
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Old 02-08-2022, 09:31 AM   #13
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Does anybody know: can you check the evaporator without taking the dashboard apart?
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Old 02-08-2022, 10:38 AM   #14
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Powder blowing from dash ac vents (oxydation of evaporator?)

You can”see” the coil without removing it by looking through the outside air pickup but I’m not sure what “checking it” means. You will not see fine powder on it. My advice is wait and see if it improves. That’s the advantage of a 2 year warranty. You’ve registered your complaint with the dealer so it’s on record and can always be revisited. Changing a coil is a lot of work including dumping the system and recharging it. Which could create other problems all while maybe not fixing the issue. Many people have had this issue and a few had their coils replaced with success. I know of one that replaced the coil and it wasn’t fixed, but even that one dissipated a short time later. The problem I have with the coil scenario is that when they operate they are wet, so wet that they tend to be a great filter of the air because dirt and pollen passing through the coils gets trapped in the water. As a result, coils over time can get clogged and need cleaning. Not sure how this fine dust can be getting through the coil.
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