A/C sweating inside coach

[E Z Livin]

When I had some minor corrections on my unit, the Dealer added two cans freon to my air since it was not cold enough.
Before this, my wife said water would drip on her from time to time. I though this would go away, but she still gets a drip ever so often.
Anybody else have this problem?

[E Z Livin]

When I had some minor corrections on my unit, the Dealer added two cans freon to my air since it was not cold enough.
Before this, my wife said water would drip on her from time to time. I though this would go away, but she still gets a drip ever so often.
Anybody else have this problem?

["007"]

Is this from the roof air or the dash air
If from roof air your drain holes maybe plugged up an fan is blowing water into duck work to vent. Some people have drilled extra drain holes in pan of AC for better drainage. Place a metal plate under where you will drill holes to protect roof. If its your dash vents AC may now be too cold causing frost on vents causing wet vapor on DW. "007"

[Rick Jay]

E Z Livin,

Since you stated additional refrigerant was added, I'm assuming you're talking about your dash AC. It's my understanding that the rooftop units are sealed.

My wife notices a similar problem in our motorhome. It's most noticeable on very hot days, especially when the humidity is high. The water is due to condensation on the vent pipes. I think a sufficient amount of humid outside air enters the motorhome so that it condenses on cold ducts. The evaporator (on my coach) is on the passenger side so the AC air is coldest there. I believe that's why we don't see the problem on the driver's side ducting. It's not a priority, but I plan on trying to put some additional insulation around that duct to see if it'll help any. Actually, I may even just block it off because she's always complaining about "freezing" when I run the dash AC. When I'm at a comfortable temperature, she's got a blanket on her lap.

Just out of curiosity, how did your dealer know to add additional refrigerant? If these systems have a sight-glass, it's fairly easy to tell if the refrigerant is low. Without one, the process is a bit more involved. I don't specifically remember if there is a sight-glass on the receiver/dryer or not. I'll have to check next time I'm out there.

Anyway, my point is that cooling efficiency can actually drop if there is too much refrigerant, just like if there is not enough. If you should notice that the system isn't quite cooling as well as it did, you might actually have more refrigerant than the system is designed to hold.

Good Luck,

~Rick

[Full-Timers]

Our dash air drips on my wife also. But only if it is real humid outside. Otherwise there is no drip.

[E Z Livin]

Thanks for the responses. Yes, I was speaking of the dash air. I asked the dealer to check it when I had the RV in for oil change. They said it was low and from the manufacturer, they had this often. Checked for leaks and found none.
I am waiting on some new strips under warranty and will have them check for excess gas when I carry it in. This week end it was cooler here, but the air was very cold. Felt great.
Thanks again for the advise.