RV.Net Open Roads Forum: Class A Motorhomes: Roof AC, Cool but not Cold

RV Blog

  |  

RV Sales

  |  

Campgrounds

  |  

RV Parks

  |  

RV Club

  |  

RV Buyers Guide

  |  

Roadside Assistance

  |  

Extended Service Plan

  |  

RV Travel Assistance

  |  

RV Credit Card

  |  

RV Loans

Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Help and Support  |  Contact

Search:   Advanced Search

Search only in Class A Motorhomes

Open Roads Forum  >  Class A Motorhomes  >  General Topics

 > Roof AC, Cool but not Cold

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 2  
Next
Sponsored By:
sanshansean

Spokane, WA

New Member

Joined: 06/23/2008

View Profile



Good Sam RV Club Member

Offline
Posted: 07/09/12 02:34pm Link  |  Quote  |  Print  |  Notify Moderator

Folks, I have an older Beaver Marque, mostly in pristine condition,
however this year I turned on the AC and it does work, however the air coming out is just cool, Not Cold...So when it is 100 degrees. Obviously the coach is not cooling down. Any of you helpful folks have any ideas? It appears that we in Spokane are now catching up with the rest of the country.... It is going to continue to be HOT!!! Thanks, will sure answer with the answer if I should luck out and receive it!
Thanks,
Russ

larry cad

ohio

Senior Member

Joined: 05/23/2004

View Profile





Offline
Posted: 07/09/12 02:57pm Link  |  Quote  |  Print  |  Notify Moderator

I'm not certain of this and perhaps others will comment, but I believe the A/C units on RVs are designed to produce a 15 degree differential between outside and inside air, (considering other factors of course). If that is correct, at 100 degrees, that would be 85 degree temp coming out of the A/C. Obviously the actual temp in the RV would be dependent on insulation and many other factors.


Today is my personal best for most consecutive days alive.

Our Travel Blog

wildtoad

Blythewood, SC

Senior Member

Joined: 06/05/2011

View Profile



Good Sam RV Club Member

Offline
Posted: 07/09/12 02:57pm Link  |  Quote  |  Print  |  Notify Moderator

If you can, measure the temp of the air going into the AC return and then the temp of the air coming out. If there is a 20-25 degree difference, then you not going to get much better than that. So if the air at the ceiling near the return is 100 then you will get cooler air but it will be 80...


Tom Wilds
Blythewood, SC
2000 Hurricane 30Q

Sandia Man

Rio Rancho, NM

Senior Member

Joined: 08/09/2008

View Profile



Posted: 07/09/12 02:57pm Link  |  Quote  |  Print  |  Notify Moderator

As best, a 20-25 degree differential between incoming air and outgoing air is all one can expect from these air conditioners. I use an infrared thermometer to verify temps. Check to make sure you have 100% separation intact and no mixing of the incoming and outgoing air as this can occur easier than one would think. These RV ACs really struggle to keep up during very hot weather.

MountainAir05

New Mexico

Senior Member

Joined: 01/27/2007

View Profile


Offline
Posted: 07/09/12 03:17pm Link  |  Quote  |  Print  |  Notify Moderator

Check the temp first thing in the AM and after about 20 minutes running you should have a 40 degree output from the AC vents, if it is charge right with no leaks. If you wait till late in the day then it will be harder to cool. Leave the Fans on high, not auto and that also will help. If you have a duct system, then check to see if you ducts are not leaking air into the ceiling. As others have stated , keep the vents filter clean.

sanshansean

Spokane, WA

New Member

Joined: 06/23/2008

View Profile



Good Sam RV Club Member

Offline
Posted: 07/09/12 03:36pm Link  |  Quote  |  Print  |  Notify Moderator

Thanks folks, I will try it first thing in the AM. However in all the years I have had this rig, when I turn it on after the comp. kickes on the air is really cold, not to say it really cools down the rig that much. But now when the comp.
kicks in it is just kind of cool air. I will try it on high fan also, I have always just left it on Automatic... well will see what happens. wonder if it could be the cover shroud I had to replace it last fall when the other one broke.

wa8yxm

Wherever I happen to park

Senior Member

Joined: 07/04/2006

View Profile


Offline
Posted: 07/09/12 09:02pm Link  |  Quote  |  Print  |  Notify Moderator

I have two comments.. the first is made above.. They only drop the temp so many degrees.. It might just be too dang hot on the inlet side.

The second? When was the last time you went topside (As the song is titled: Up On The Roof), Removed the covers (both inner and outer) and gave the condenser coils a good cleaning, (Along with everything else up there that can be cleaned?) Makes a BIG!!!!!! Difference, trust me.


Nothin adds excitment like something that is none of your business
Kenwood TS-2000 housed in a 2005 Damon Intruder 377


sanshansean

Spokane, WA

New Member

Joined: 06/23/2008

View Profile



Good Sam RV Club Member

Offline
Posted: 07/09/12 09:38pm Link  |  Quote  |  Print  |  Notify Moderator

wa8yxm
Thank you for the idea, I shall be on the roof first thing tomorrow morning, before it gets hot. and do some cleaning!! I replaced the plastic cover last
fall, but didn't know there was also a inner cover. Thanks again, hope that works.

Tinstar

McKinney, TX

Senior Member

Joined: 09/13/2003

View Profile


Offline
Posted: 07/09/12 11:34pm Link  |  Quote  |  Print  |  Notify Moderator

Like wa8yxm, I clean the evaporator coil on the topside every 2 or 3 years. They do get clogged with dust and other trash. I spray them from inside the coil toward the outside. Of course I'm sure you are cleaning your inside return air filters,,,, aren't you?


Never pass up a chance to go somewhere

sanshansean

Spokane, WA

New Member

Joined: 06/23/2008

View Profile



Good Sam RV Club Member

Offline
Posted: 07/12/12 07:58am Link  |  Quote  |  Print  |  Notify Moderator

thanks to all of you, Have cleaned everything I could clean. Sure was dusty and dirty. Today is going to be damn hot so will be trying it out for coldness. Tried it last evening and seemed to be colder, however the sun had gone down and it was cooler outside. so we shall see today in the heat of the day. Thanks and let's hope and pray your idea's do the trick!

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 2  
Next

Open Roads Forum  >  Class A Motorhomes  >  General Topics

 > Roof AC, Cool but not Cold
Search:   Advanced Search

Search only in Class A Motorhomes


New posts No new posts
Closed, new posts Closed, no new posts
Moved, new posts Moved, no new posts

Adjust text size:

© 2013 RV.Net | Terms & Conditions | PRIVACY POLICY | YOUR PRIVACY RIGHTS